Podcast
Questions and Answers
What is the primary purpose of a ResultSet object?
What is the primary purpose of a ResultSet object?
- To represent a table of data from a database query. (correct)
- To optimize database performance.
- To manage database connections.
- To create SQL statements.
In what manner does the default ResultSet cursor operate?
In what manner does the default ResultSet cursor operate?
- It resets to the first row after each iteration.
- It only moves forward and is not updatable. (correct)
- It can iterate through rows multiple times.
- It supports backward movement through the rows.
Which method allows iteration through the rows of a ResultSet object?
Which method allows iteration through the rows of a ResultSet object?
- first()
- last()
- next() (correct)
- previous()
When retrieving values from the ResultSet, which method is generally more efficient?
When retrieving values from the ResultSet, which method is generally more efficient?
Which of the following statements about ResultSet columns is correct?
Which of the following statements about ResultSet columns is correct?
What happens when the next method is called on a ResultSet object and there are no more rows available?
What happens when the next method is called on a ResultSet object and there are no more rows available?
Which of the following describes the behavior of a scrollable ResultSet?
Which of the following describes the behavior of a scrollable ResultSet?
What type of ResultSet is created using the parameters TYPE_SCROLL_INSENSITIVE and CONCUR_UPDATABLE?
What type of ResultSet is created using the parameters TYPE_SCROLL_INSENSITIVE and CONCUR_UPDATABLE?
What happens when multiple columns share the same name in a SQL query result set?
What happens when multiple columns share the same name in a SQL query result set?
When using updater methods, what should a programmer do to ensure clarity in which column is being updated?
When using updater methods, what should a programmer do to ensure clarity in which column is being updated?
Which method is used to update the current row in a ResultSet object after modifying data?
Which method is used to update the current row in a ResultSet object after modifying data?
How does an updatable ResultSet handle new rows before they are committed to the database?
How does an updatable ResultSet handle new rows before they are committed to the database?
What is the result when a Statement object generating a ResultSet is closed?
What is the result when a Statement object generating a ResultSet is closed?
Which method retrieves the value of a designated column as a stream of ASCII characters?
Which method retrieves the value of a designated column as a stream of ASCII characters?
Which fetch direction is indicated by FETCH_REVERSE in a ResultSet?
Which fetch direction is indicated by FETCH_REVERSE in a ResultSet?
What is the output type of getBigDecimal(int columnIndex)?
What is the output type of getBigDecimal(int columnIndex)?
Which method would you use to reset all changes made to the current row in a ResultSet?
Which method would you use to reset all changes made to the current row in a ResultSet?
What does the method findColumn(String columnLabel) accomplish in a ResultSet?
What does the method findColumn(String columnLabel) accomplish in a ResultSet?
Which of the following methods is deprecated?
Which of the following methods is deprecated?
Which method retrieves a stream of uninterpreted bytes for a specific column?
Which method retrieves a stream of uninterpreted bytes for a specific column?
What does the CLOSE_CURSORS_AT_COMMIT constant indicate regarding ResultSet objects?
What does the CLOSE_CURSORS_AT_COMMIT constant indicate regarding ResultSet objects?
Which constant allows a ResultSet to be updated and provides bidirectional scrolling?
Which constant allows a ResultSet to be updated and provides bidirectional scrolling?
What type is returned by the method getBoolean(String columnLabel)?
What type is returned by the method getBoolean(String columnLabel)?
Which method can be used to retrieve the fetch size of a ResultSet object?
Which method can be used to retrieve the fetch size of a ResultSet object?
What is true about the TYPE_SCROLL_SENSITIVE constant?
What is true about the TYPE_SCROLL_SENSITIVE constant?
What is returned by the getClob(String columnLabel) method?
What is returned by the getClob(String columnLabel) method?
What is the role of the ResultSetMetaData object?
What is the role of the ResultSetMetaData object?
How can you retrieve the value of a designated column as a java.sql.Date object?
How can you retrieve the value of a designated column as a java.sql.Date object?
Which method would you call to advance the cursor to just after the last row of a ResultSet?
Which method would you call to advance the cursor to just after the last row of a ResultSet?
Which method should be used for a float retrieval in a ResultSet?
Which method should be used for a float retrieval in a ResultSet?
What kind of object is retrieved using the method getBlob(int columnIndex)?
What kind of object is retrieved using the method getBlob(int columnIndex)?
Which method would you use to retrieve a byte array from a ResultSet?
Which method would you use to retrieve a byte array from a ResultSet?
What will be returned from getCursorName()?
What will be returned from getCursorName()?
Which method retrieves the concurrency mode of a ResultSet object?
Which method retrieves the concurrency mode of a ResultSet object?
Which method retrieves a character stream for a designated column?
Which method retrieves a character stream for a designated column?
What does the method getLong(int columnIndex) return?
What does the method getLong(int columnIndex) return?
Which method would you use to get a Reader object for a specified column?
Which method would you use to get a Reader object for a specified column?
What value type does getNClob(String columnLabel) return?
What value type does getNClob(String columnLabel) return?
To retrieve the type of a ResultSet object, which method should you use?
To retrieve the type of a ResultSet object, which method should you use?
What does the method getTime(String columnLabel) return?
What does the method getTime(String columnLabel) return?
If you need to get the current row index from a ResultSet, which method would you use?
If you need to get the current row index from a ResultSet, which method would you use?
Which of the following methods is deprecated?
Which of the following methods is deprecated?
What type of object does getRef(int columnIndex) return?
What type of object does getRef(int columnIndex) return?
Which method will convert the SQL type of a column to the requested Java data type?
Which method will convert the SQL type of a column to the requested Java data type?
To retrieve the number, types, and properties of columns in a ResultSet, which method is used?
To retrieve the number, types, and properties of columns in a ResultSet, which method is used?
What is returned by the method getTimestamp(int columnIndex)?
What is returned by the method getTimestamp(int columnIndex)?
Which method allows the retrieval of an SQLXML object from a ResultSet?
Which method allows the retrieval of an SQLXML object from a ResultSet?
How does getRowId(String columnLabel) differ from its int variant?
How does getRowId(String columnLabel) differ from its int variant?
Which method retrieves the Statement object that created the ResultSet?
Which method retrieves the Statement object that created the ResultSet?
Which method should be used instead of getUnicodeStream?
Which method should be used instead of getUnicodeStream?
What does the method getWarnings() return?
What does the method getWarnings() return?
What does the isBeforeFirst() method check?
What does the isBeforeFirst() method check?
Which method allows you to refresh the current row with its latest value?
Which method allows you to refresh the current row with its latest value?
What effect does the isClosed() method have?
What effect does the isClosed() method have?
What is the purpose of the void insertRow() method?
What is the purpose of the void insertRow() method?
What does the relative(int rows) method do?
What does the relative(int rows) method do?
What type of value can be updated using updateBoolean(int columnIndex, boolean x)?
What type of value can be updated using updateBoolean(int columnIndex, boolean x)?
Which method is used to move the cursor to the last row of a ResultSet?
Which method is used to move the cursor to the last row of a ResultSet?
What is the function of the updateBlob(String columnLabel, Blob x) method?
What is the function of the updateBlob(String columnLabel, Blob x) method?
Which method moves the cursor to the previous row in a ResultSet?
Which method moves the cursor to the previous row in a ResultSet?
What does the rowUpdated() method indicate?
What does the rowUpdated() method indicate?
Which of the following methods would you use to check if a cursor is on the first row?
Which of the following methods would you use to check if a cursor is on the first row?
What is the role of the setFetchDirection(int direction) method?
What is the role of the setFetchDirection(int direction) method?
What is the purpose of the method updateByte(int columnIndex, byte x)?
What is the purpose of the method updateByte(int columnIndex, byte x)?
Which method allows updating a column with a character stream but specifies the number of bytes?
Which method allows updating a column with a character stream but specifies the number of bytes?
How does updateClob(int columnIndex, Reader reader, long length) function?
How does updateClob(int columnIndex, Reader reader, long length) function?
What data type does updateDate(String columnLabel, Date x) accept for its second parameter?
What data type does updateDate(String columnLabel, Date x) accept for its second parameter?
Which method updates a column with a NULL value?
Which method updates a column with a NULL value?
What is the function of updateNCharacterStream(int columnIndex, Reader x)?
What is the function of updateNCharacterStream(int columnIndex, Reader x)?
What kind of value can be passed to updateObject(String columnLabel, Object x)?
What kind of value can be passed to updateObject(String columnLabel, Object x)?
What is the purpose of updateFloat(int columnIndex, float x)?
What is the purpose of updateFloat(int columnIndex, float x)?
Which method should be used to update a column with a NClob value?
Which method should be used to update a column with a NClob value?
What does updateBytes(String columnLabel, byte[] x) accomplish?
What does updateBytes(String columnLabel, byte[] x) accomplish?
What does the method updateLong(int columnIndex, long x) specifically accept as a parameter?
What does the method updateLong(int columnIndex, long x) specifically accept as a parameter?
For which method is the second parameter 'scaleOrLength' not applicable?
For which method is the second parameter 'scaleOrLength' not applicable?
Which of the following methods does not specify an alternative parameter type for handling objects?
Which of the following methods does not specify an alternative parameter type for handling objects?
What type does the method updateInt(String columnLabel, int x) work with?
What type does the method updateInt(String columnLabel, int x) work with?
What method would you use to update a column with a short value in a ResultSet?
What method would you use to update a column with a short value in a ResultSet?
Which fetch direction constant indicates that the rows in a ResultSet will be processed from last to first?
Which fetch direction constant indicates that the rows in a ResultSet will be processed from last to first?
Which of the following methods updates a column with a java.sql.SQLXML value?
Which of the following methods updates a column with a java.sql.SQLXML value?
What is the purpose of the method wasNull() in a ResultSet?
What is the purpose of the method wasNull() in a ResultSet?
Which constant indicates a ResultSet that can only be moved forward?
Which constant indicates a ResultSet that can only be moved forward?
What does the method updateRow() do in a ResultSet?
What does the method updateRow() do in a ResultSet?
Which of the following methods would you use to update a column with a java.sql.Time value?
Which of the following methods would you use to update a column with a java.sql.Time value?
What is the significance of the FETCH_UNKNOWN constant?
What is the significance of the FETCH_UNKNOWN constant?
Which method would update a column with a RowId value using the column's index?
Which method would update a column with a RowId value using the column's index?
The method next() serves what purpose in a ResultSet?
The method next() serves what purpose in a ResultSet?
In a ResultSet, what does the constant CONCUR_UPDATABLE signify?
In a ResultSet, what does the constant CONCUR_UPDATABLE signify?
Which method would you use to update a column with a String value using the column's label?
Which method would you use to update a column with a String value using the column's label?
Which constant would you refer to for a ResultSet that is scrollable but not sensitive to changes?
Which constant would you refer to for a ResultSet that is scrollable but not sensitive to changes?
What will happen if you invoke a ResultSet method that requires a current row, but none exists?
What will happen if you invoke a ResultSet method that requires a current row, but none exists?
What is the behavior of the next() method in a TYPE_FORWARD_ONLY ResultSet when called on a closed result set?
What is the behavior of the next() method in a TYPE_FORWARD_ONLY ResultSet when called on a closed result set?
Which of the following is true regarding the close() method of a ResultSet?
Which of the following is true regarding the close() method of a ResultSet?
What happens to the ResultSet's warning chain when a new row is read?
What happens to the ResultSet's warning chain when a new row is read?
After closing a ResultSet, what happens to the ResultSetMetaData instances created by getMetaData?
After closing a ResultSet, what happens to the ResultSetMetaData instances created by getMetaData?
When calling getBoolean(int columnIndex), what is the returned value if the designated column contains the value '0'?
When calling getBoolean(int columnIndex), what is the returned value if the designated column contains the value '0'?
What is required before calling wasNull() after reading a value from a ResultSet?
What is required before calling wasNull() after reading a value from a ResultSet?
Which method will throw an SQLException if the columnIndex is not valid?
Which method will throw an SQLException if the columnIndex is not valid?
When invoking getByte(int columnIndex), what will be returned if the value is SQL NULL?
When invoking getByte(int columnIndex), what will be returned if the value is SQL NULL?
If an input stream is open for the current row, what will happen when next() is called?
If an input stream is open for the current row, what will happen when next() is called?
What does the getShort(int columnIndex) method return if the last column value is SQL NULL?
What does the getShort(int columnIndex) method return if the last column value is SQL NULL?
What type of SQL data does getInt(int columnIndex) return based on the content type?
What type of SQL data does getInt(int columnIndex) return based on the content type?
What exception is thrown if you attempt to call any ResultSet methods after the ResultSet has been closed?
What exception is thrown if you attempt to call any ResultSet methods after the ResultSet has been closed?
If the getInt(int columnIndex) method is called with an invalid columnIndex, what is the expected outcome?
If the getInt(int columnIndex) method is called with an invalid columnIndex, what is the expected outcome?
Which method should be used to retrieve large LONGVARCHAR values in a stream of two-byte Unicode characters?
Which method should be used to retrieve large LONGVARCHAR values in a stream of two-byte Unicode characters?
What is the return value of a column in a ResultSet when its value is SQL NULL?
What is the return value of a column in a ResultSet when its value is SQL NULL?
Which method in ResultSet retrieves the value as a long type?
Which method in ResultSet retrieves the value as a long type?
What is the return type of the method getBoolean when retrieving a value from a ResultSet?
What is the return type of the method getBoolean when retrieving a value from a ResultSet?
What occurs when the next call to a getter method is made after reading data from a stream?
What occurs when the next call to a getter method is made after reading data from a stream?
What exception is thrown if the columnLabel is not valid in a ResultSet method?
What exception is thrown if the columnLabel is not valid in a ResultSet method?
Which method should be used to retrieve a value as uninterpreted bytes suitable for large LONGVARBINARY values?
Which method should be used to retrieve a value as uninterpreted bytes suitable for large LONGVARBINARY values?
Which of the following is a correctly deprecated method in ResultSet?
Which of the following is a correctly deprecated method in ResultSet?
What is returned by the getLong method if the column value is SQL NULL?
What is returned by the getLong method if the column value is SQL NULL?
What is the primary purpose of the getCharacterStream method?
What is the primary purpose of the getCharacterStream method?
What must be true about the ResultSet when calling its methods to avoid exceptions?
What must be true about the ResultSet when calling its methods to avoid exceptions?
How is a column returned if the SQL AS clause is not specified for that column?
How is a column returned if the SQL AS clause is not specified for that column?
Which of the following can cause an SQLException when calling the getFloat method?
Which of the following can cause an SQLException when calling the getFloat method?
If a column retrieved is SQL NULL, what will the getString method return?
If a column retrieved is SQL NULL, what will the getString method return?
Which method should be used instead of the deprecated getBigDecimal with a scale parameter?
Which method should be used instead of the deprecated getBigDecimal with a scale parameter?
Which method retrieves the column value as a double in the ResultSet?
Which method retrieves the column value as a double in the ResultSet?
In the context of JDBC, which exception is thrown if an invalid column index is provided?
In the context of JDBC, which exception is thrown if an invalid column index is provided?
A SQL access error during ResultSet operations will result in which exception?
A SQL access error during ResultSet operations will result in which exception?
What is the return type when using getDate method on a ResultSet object?
What is the return type when using getDate method on a ResultSet object?
Which parameter specifies the column to retrieve when using the method getByte?
Which parameter specifies the column to retrieve when using the method getByte?
What is the expected output when calling getBigDecimal(String columnLabel) with a SQL NULL value?
What is the expected output when calling getBigDecimal(String columnLabel) with a SQL NULL value?
What does the input stream returned by getBinaryStream deliver?
What does the input stream returned by getBinaryStream deliver?
If getBytes is called on a closed result set, what will happen?
If getBytes is called on a closed result set, what will happen?
What type does the method getByte return when fetching a column value from a ResultSet?
What type does the method getByte return when fetching a column value from a ResultSet?
Which data type is returned by the getBytes(String columnLabel) method?
Which data type is returned by the getBytes(String columnLabel) method?
What is the significance of the columnIndex parameter in these ResultSet methods?
What is the significance of the columnIndex parameter in these ResultSet methods?
Which method should be used for retrieving values in a character stream with a downgrade from Unicode to ASCII?
Which method should be used for retrieving values in a character stream with a downgrade from Unicode to ASCII?
What does the scale parameter in getBigDecimal(String columnLabel, int scale) represent?
What does the scale parameter in getBigDecimal(String columnLabel, int scale) represent?
What happens if an invalid column index is used with the getTimestamp method?
What happens if an invalid column index is used with the getTimestamp method?
How does the JDBC driver handle conversion from database format while retrieving data?
How does the JDBC driver handle conversion from database format while retrieving data?
If a method is called on a closed ResultSet, what happens?
If a method is called on a closed ResultSet, what happens?
What does the getAsciiStream method provide?
What does the getAsciiStream method provide?
When calling getDouble on a column with a SQL NULL value, what is the result?
When calling getDouble on a column with a SQL NULL value, what is the result?
What will happen if you try to access a column in a ResultSet that has been closed?
What will happen if you try to access a column in a ResultSet that has been closed?
What is returned by getBigDecimal(int columnIndex) method when the column value is SQL NULL?
What is returned by getBigDecimal(int columnIndex) method when the column value is SQL NULL?
Which method retrieves a value as a java.sql.Time object?
Which method retrieves a value as a java.sql.Time object?
What will getFloat(int columnIndex) return if the column value is not of float type?
What will getFloat(int columnIndex) return if the column value is not of float type?
Which exception is specifically mentioned for unsupported method calls on a JDBC driver?
Which exception is specifically mentioned for unsupported method calls on a JDBC driver?
What should you expect when the column value is SQL NULL with the getBytes method?
What should you expect when the column value is SQL NULL with the getBytes method?
What will be returned when the getDate method is invoked with a columnLabel that is invalid?
What will be returned when the getDate method is invoked with a columnLabel that is invalid?
What is the result of calling getAsciiStream after retrieving another column's value?
What is the result of calling getAsciiStream after retrieving another column's value?
If a column value retrieved by getTime is SQL NULL, what will be the result?
If a column value retrieved by getTime is SQL NULL, what will be the result?
Under which circumstance will calling getUnicodeStream lead to a SQLFeatureNotSupportedException?
Under which circumstance will calling getUnicodeStream lead to a SQLFeatureNotSupportedException?
When retrieving the value of a designated column using getTimestamp, what type of object is returned?
When retrieving the value of a designated column using getTimestamp, what type of object is returned?
What happens when you try to retrieve a column value using getBinaryStream method after closing the ResultSet?
What happens when you try to retrieve a column value using getBinaryStream method after closing the ResultSet?
What is required as a parameter when invoking the getTime method?
What is required as a parameter when invoking the getTime method?
Which scenario would lead to a SQLException when using getDate?
Which scenario would lead to a SQLException when using getDate?
What happens when reading an ASCII stream prior to getting value from any other column?
What happens when reading an ASCII stream prior to getting value from any other column?
Which method should be used to retrieve a stream of two-byte Unicode characters?
Which method should be used to retrieve a stream of two-byte Unicode characters?
Which of the following will not be returned when invoking getBinaryStream for a column with SQL NULL?
Which of the following will not be returned when invoking getBinaryStream for a column with SQL NULL?
Which exception is thrown when trying to access data from a closed ResultSet?
Which exception is thrown when trying to access data from a closed ResultSet?
What will getCharacterStream do that is similar to getUnicodeStream?
What will getCharacterStream do that is similar to getUnicodeStream?
What is a critical aspect to remember when using getAsciiStream?
What is a critical aspect to remember when using getAsciiStream?
What happens to the warning chain when a new row is read from a ResultSet object?
What happens to the warning chain when a new row is read from a ResultSet object?
Which of the following statements is true regarding the getObject method when retrieving an SQL NULL value?
Which of the following statements is true regarding the getObject method when retrieving an SQL NULL value?
What SQL feature does the getCursorName method support?
What SQL feature does the getCursorName method support?
Which exception might be thrown by the getWarnings method?
Which exception might be thrown by the getWarnings method?
When is the warning chain for a ResultSet cleared?
When is the warning chain for a ResultSet cleared?
What is the primary outcome when calling clearWarnings on a ResultSet object?
What is the primary outcome when calling clearWarnings on a ResultSet object?
What does the method getMetaData return?
What does the method getMetaData return?
Which scenario may lead to an SQLFeatureNotSupportedException when using getCursorName?
Which scenario may lead to an SQLFeatureNotSupportedException when using getCursorName?
What does the method getObject(int columnIndex) require as a parameter?
What does the method getObject(int columnIndex) require as a parameter?
When a method is called on a closed ResultSet, what is the expected outcome?
When a method is called on a closed ResultSet, what is the expected outcome?
Which method allows retrieval of specific column data as a Java object?
Which method allows retrieval of specific column data as a Java object?
In what situation will the getWarnings method return null?
In what situation will the getWarnings method return null?
Which method is used to obtain the label for a specific column within a ResultSet?
Which method is used to obtain the label for a specific column within a ResultSet?
Which method can be used to obtain a stream of uninterpreted bytes for a designated column?
Which method can be used to obtain a stream of uninterpreted bytes for a designated column?
What will occur if an invalid column label is provided to getObject(String columnLabel)?
What will occur if an invalid column label is provided to getObject(String columnLabel)?
What does the method getObject(columnLabel) return when called on a SQL user-defined type in a ResultSet?
What does the method getObject(columnLabel) return when called on a SQL user-defined type in a ResultSet?
What exception is thrown if an invalid column label is passed to the findColumn method?
What exception is thrown if an invalid column label is passed to the findColumn method?
Which method is designed to retrieve the value of a specified column as a Reader object from a ResultSet?
Which method is designed to retrieve the value of a specified column as a Reader object from a ResultSet?
What is the return type of the method getBigDecimal(int columnIndex)?
What is the return type of the method getBigDecimal(int columnIndex)?
What does the method isAfterLast() indicate about the cursor's position in a ResultSet?
What does the method isAfterLast() indicate about the cursor's position in a ResultSet?
Which of the following conditions will NOT throw an SQLException when invoking getCharacterStream(String columnLabel)?
Which of the following conditions will NOT throw an SQLException when invoking getCharacterStream(String columnLabel)?
What does the method getBigDecimal(String columnLabel) specifically retrieve?
What does the method getBigDecimal(String columnLabel) specifically retrieve?
What is the purpose of the isBeforeFirst() method in a ResultSet?
What is the purpose of the isBeforeFirst() method in a ResultSet?
Which parameter is used to specify the column's position in the getCharacterStream(int columnIndex) method?
Which parameter is used to specify the column's position in the getCharacterStream(int columnIndex) method?
What will happen if the getObject method is called on a closed ResultSet?
What will happen if the getObject method is called on a closed ResultSet?
In what situation would the findColumn method throw a SQLException?
In what situation would the findColumn method throw a SQLException?
What does the method getCharacterStream(int columnIndex) return if the selected column value is SQL NULL?
What does the method getCharacterStream(int columnIndex) return if the selected column value is SQL NULL?
What type of value does the isBeforeFirst method return when the cursor is positioned before the first row?
What type of value does the isBeforeFirst method return when the cursor is positioned before the first row?
Which method is called to determine the cursor's position in a ResultSet when it is after the last row?
Which method is called to determine the cursor's position in a ResultSet when it is after the last row?
What does the method afterLast do in a ResultSet object?
What does the method afterLast do in a ResultSet object?
What is the return value of the isLast method when there are no rows in the ResultSet?
What is the return value of the isLast method when there are no rows in the ResultSet?
Which exception is thrown if the getRow method is called on a closed ResultSet?
Which exception is thrown if the getRow method is called on a closed ResultSet?
When calling the absolute method with a negative integer, what does the cursor position itself to?
When calling the absolute method with a negative integer, what does the cursor position itself to?
What would happen if beforeFirst is called on a ResultSet that contains no rows?
What would happen if beforeFirst is called on a ResultSet that contains no rows?
What is the purpose of the isFirst method in a ResultSet object?
What is the purpose of the isFirst method in a ResultSet object?
What will be the return value of first() if the ResultSet is empty?
What will be the return value of first() if the ResultSet is empty?
Why may calling isLast be considered an expensive operation?
Why may calling isLast be considered an expensive operation?
What happens if the cursor attempts to move beyond the boundaries of the ResultSet using absolute method?
What happens if the cursor attempts to move beyond the boundaries of the ResultSet using absolute method?
What is returned by the getRow method when there is no current row?
What is returned by the getRow method when there is no current row?
Which of the following is NOT an exception that can be thrown by the isAfterLast method?
Which of the following is NOT an exception that can be thrown by the isAfterLast method?
If a ResultSet has no rows and the method afterLast is called, what effect does it have?
If a ResultSet has no rows and the method afterLast is called, what effect does it have?
What is the result of calling the last() method on an empty ResultSet?
What is the result of calling the last() method on an empty ResultSet?
What exception is thrown when the rowUpdated method is called on a closed result set?
What exception is thrown when the rowUpdated method is called on a closed result set?
Which concurrency mode allows for updating the current row in a ResultSet?
Which concurrency mode allows for updating the current row in a ResultSet?
What is the returned type of the rowInserted method if an insertion is detected?
What is the returned type of the rowInserted method if an insertion is detected?
Which method should be used to update a designated column with an integer value?
Which method should be used to update a designated column with an integer value?
What type does the updateNull method accept for its parameter?
What type does the updateNull method accept for its parameter?
What is the significance of the method rowDeleted in a ResultSet object?
What is the significance of the method rowDeleted in a ResultSet object?
Which exception may occur if the updateBoolean method is not supported by the JDBC driver?
Which exception may occur if the updateBoolean method is not supported by the JDBC driver?
What indicates whether visible updates can be detected in a ResultSet?
What indicates whether visible updates can be detected in a ResultSet?
When is the value of rowUpdated expected to return false?
When is the value of rowUpdated expected to return false?
Which method allows updates on a column index without changing the underlying database until explicitly called?
Which method allows updates on a column index without changing the underlying database until explicitly called?
What does the return value of rowInserted method indicate?
What does the return value of rowInserted method indicate?
Which class provides the ability to determine if deletes are detected in a ResultSet?
Which class provides the ability to determine if deletes are detected in a ResultSet?
What can be inferred if an SQLException is thrown when invoking an update method?
What can be inferred if an SQLException is thrown when invoking an update method?
What will happen if the cursor is moved beyond the last row of a ResultSet object using the relative method?
What will happen if the cursor is moved beyond the last row of a ResultSet object using the relative method?
What does the setFetchSize(int rows) method influence regarding the ResultSet?
What does the setFetchSize(int rows) method influence regarding the ResultSet?
If a programmer calls getFetchDirection() on a closed ResultSet, what is the expected outcome?
If a programmer calls getFetchDirection() on a closed ResultSet, what is the expected outcome?
What is the result of calling the previous() method when the cursor is already positioned before the first row?
What is the result of calling the previous() method when the cursor is already positioned before the first row?
Which statement accurately describes the function of the relative(int rows) method?
Which statement accurately describes the function of the relative(int rows) method?
What should a developer expect if they call setFetchDirection(int direction) with FETCH_FORWARD on a ResultSet type that is TYPE_FORWARD_ONLY?
What should a developer expect if they call setFetchDirection(int direction) with FETCH_FORWARD on a ResultSet type that is TYPE_FORWARD_ONLY?
Which method can be used to determine if the cursor is currently on a valid row?
Which method can be used to determine if the cursor is currently on a valid row?
What will be the result of calling the method absolute(0) on a ResultSet?
What will be the result of calling the method absolute(0) on a ResultSet?
Which of the following can result in an SQLFeatureNotSupportedException being thrown?
Which of the following can result in an SQLFeatureNotSupportedException being thrown?
What type of value will the getFetchSize() method return?
What type of value will the getFetchSize() method return?
Calling relative(0) on a ResultSet object has what effect?
Calling relative(0) on a ResultSet object has what effect?
What would happen if the cursor is moved using absolute(1) on a TYPE_FORWARD_ONLY ResultSet?
What would happen if the cursor is moved using absolute(1) on a TYPE_FORWARD_ONLY ResultSet?
What does setting the fetch direction to FETCH_UNKNOWN imply for the ResultSet?
What does setting the fetch direction to FETCH_UNKNOWN imply for the ResultSet?
If you attempt to execute previous() on a closed ResultSet, what occurs?
If you attempt to execute previous() on a closed ResultSet, what occurs?
Study Notes
JavaScript and Frames
- Frames are a feature used for web pages.
- Disabling JavaScript in your browser prevents the document from functioning as intended.
- If JavaScript is disabled, you will see a message indicating that frames are required.
- A link to a non-frame version of the document is provided as an alternative.
Browser Functionality
- The text indicates the document is designed to be viewed using browser frames.
- Frames allow for a page to be split into multiple sections, each with its own independent content.
- The text specifies that the document is unsuitable for use with web clients that don't support frames.
- A link is provided for viewing the document in a non-frame format.
ResultSet Interface
- Represents a database result set: Usually generated by executing a statement that queries a database.
- Maintains a cursor: Points to the current row of data.
- Cursor initially positioned before the first row: The
next()method moves the cursor to the next row. - Default
ResultSetobject: Not updatable and has a forward-only cursor. - Methods for column value retrieval:
getBoolean(),getLong(), etc. using column index or name. - Column indexing: Starts from 1.
ResultSetobjects can be scrollable and/or updatable:TYPE_SCROLL_INSENSITIVE,CONCUR_UPDATABLEare used to achieve this.- Getter methods: Attempt to convert underlying data to the specified Java type.
- Column names are case insensitive: When several columns have the same name, the first match is returned.
- Updater methods: Added in JDBC 2.0 API.
- Used to update a column value in the current row.
- Used to insert a new row into the
ResultSetand the data source.
ResultSetobject automatically closed: When theStatementobject that generated it is closed, re-executed, or used to retrieve the next result from a sequence of multiple results.ResultSetMetaDataobject: Provides information about the columns of a result set - number, types, and properties.
ResultSet Interface Methods
getUnicodeStream(int columnIndex): Retrieves a Unicode stream from the specified column. It is deprecated and recommends usinggetCharacterStreaminstead.getUnicodeStream(String columnLabel): Retrieves a Unicode stream from the specified column by label. It is deprecated and recommends usinggetCharacterStreaminstead.getURL(int columnIndex): Retrieves the value of the designated column in the current row as ajava.net.URLobject.getURL(String columnLabel): Retrieves the value of the designated column in the current row as ajava.net.URLobject.getWarnings(): Retrieves the first warning reported by calls on thisResultSetobject.insertRow(): Inserts the contents of the insert row into theResultSetobject and the database.isAfterLast(): Indicates if the cursor is positioned after the last row in theResultSet.isBeforeFirst(): Indicates if the cursor is positioned before the first row in theResultSet.isClosed(): Indicates if theResultSetobject has been closed.isFirst(): Indicates if the cursor is positioned on the first row in theResultSet.isLast(): Indicates if the cursor is positioned on the last row in theResultSet.last(): Moves the cursor to the last row in theResultSet.moveToCurrentRow(): Moves the cursor to the remembered cursor position, typically the current row.moveToInsertRow(): Moves the cursor to the insert row.next(): Moves the cursor forward one row.previous(): Moves the cursor to the previous row in theResultSet.refreshRow(): Refreshes the current row with its most recent value from the database.relative(int rows): Moves the cursor a relative number of rows, either positive or negative.rowDeleted(): Indicates if a row has been deleted.rowInserted(): Indicates if the current row has had an insertion.rowUpdated(): Indicates if the current row has been updated.setFetchDirection(int direction): Gives a hint to the driver about the direction theResultSetwill be processed.setFetchSize(int rows): Hints to the JDBC driver about the number of rows to fetch from the database when more rows are needed.updateArray(int columnIndex, Array x): Updates the designated column with ajava.sql.Arrayvalue.updateArray(String columnLabel, Array x): Updates the designated column with ajava.sql.Arrayvalue by label.updateAsciiStream(int columnIndex, InputStream x): Updates the designated column with an ASCII stream value.updateAsciiStream(int columnIndex, InputStream x, int length): Updates the designated column with an ASCII stream value, specifying the length of the stream in bytes.updateAsciiStream(int columnIndex, InputStream x, long length): Updates the designated column with an ASCII stream value, specifying the length of the stream in bytes.updateAsciiStream(String columnLabel, InputStream x): Updates the designated column with an ASCII stream value by label.updateAsciiStream(String columnLabel, InputStream x, int length): Updates the designated column with an ASCII stream value by label, specifying the length of the stream in bytes.updateAsciiStream(String columnLabel, InputStream x, long length): Updates the designated column with an ASCII stream value by label, specifying the length of the stream in bytes.updateBigDecimal(int columnIndex, BigDecimal x): Updates the designated column with ajava.math.BigDecimalvalue.updateBigDecimal(String columnLabel, BigDecimal x): Updates the designated column with ajava.sql.BigDecimalvalue by label.updateBinaryStream(int columnIndex, InputStream x): Updates the designated column with a binary stream value.updateBinaryStream(int columnIndex, InputStream x, int length): Updates the designated column with a binary stream value, specifying the length of the stream in bytes.updateBinaryStream(int columnIndex, InputStream x, long length): Updates the designated column with a binary stream value, specifying the length of the stream in bytes.updateBinaryStream(String columnLabel, InputStream x): Updates the designated column with a binary stream value by label.updateBinaryStream(String columnLabel, InputStream x, int length): Updates the designated column with a binary stream value by label, specifying the length of the stream in bytes.updateBinaryStream(String columnLabel, InputStream x, long length): Updates the designated column with a binary stream value by label, specifying the length of the stream in bytes.updateBlob(int columnIndex, Blob x): Updates the designated column with ajava.sql.Blobvalue.updateBlob(int columnIndex, InputStream inputStream): Updates the designated column with aBlobvalue using the given input stream.updateBlob(int columnIndex, InputStream inputStream, long length): Updates the designated column with aBlobvalue using the given input stream, specifying the length of the stream in bytes.updateBlob(String columnLabel, Blob x): Updates the designated column with ajava.sql.Blobvalue by label.updateBlob(String columnLabel, InputStream inputStream): Updates the designated column with aBlobvalue using the given input stream by label.updateBlob(String columnLabel, InputStream inputStream, long length): Updates the designated column with aBlobvalue using the given input stream by label, specifying the length of the stream in bytes.updateBoolean(int columnIndex, boolean x): Updates the designated column with a boolean value.updateBoolean(String columnLabel, boolean x): Updates the designated column with a boolean value by label.updateByte(int columnIndex, byte x): Updates the designated column with a byte value.updateByte(String columnLabel, byte x): Updates the designated column with a byte value by label.updateBytes(int columnIndex, byte[] x): Updates the designated column with a byte array value.updateBytes(String columnLabel, byte[] x): Updates the designated column with a byte array value by label.updateCharacterStream(int columnIndex, Reader x): Updates the designated column with a character stream value.updateCharacterStream(int columnIndex, Reader x, int length): Updates the designated column with a character stream value, specifying the length of the stream in bytes.updateCharacterStream(int columnIndex, Reader x, long length): Updates the designated column with a character stream value, specifying the length of the stream in bytes.updateCharacterStream(String columnLabel, Reader reader): Updates the designated column with a character stream value by label.updateCharacterStream(String columnLabel, Reader reader, int length): Updates the designated column with a character stream value by label, specifying the length of the stream in bytes.updateCharacterStream(String columnLabel, Reader reader, long length): Updates the designated column with a character stream value by label, specifying the length of the stream in bytes.updateClob(int columnIndex, Clob x): Updates the designated column with ajava.sql.Clobvalue.updateClob(int columnIndex, Reader reader): Updates the designated column with aClobvalue using the given Reader object.updateClob(int columnIndex, Reader reader, long length): Updates the designated column with aClobvalue using the given Reader object, specifying the length of the stream in characters.updateClob(String columnLabel, Clob x): Updates the designated column with ajava.sql.Clobvalue by label.updateClob(String columnLabel, Reader reader): Updates the designated column with aClobvalue using the given Reader object by label.updateClob(String columnLabel, Reader reader, long length): Updates the designated column with aClobvalue using the given Reader object by label, specifying the length of the stream in characters.updateDate(int columnIndex, Date x): Updates the designated column with ajava.sql.Datevalue.updateDate(String columnLabel, Date x): Updates the designated column with ajava.sql.Datevalue by label.updateDouble(int columnIndex, double x): Updates the designated column with a double value.updateDouble(String columnLabel, double x): Updates the designated column with a double value by label.updateFloat(int columnIndex, float x): Updates the designated column with a float value.updateFloat(String columnLabel, float x): Updates the designated column with a float value by label.updateInt(int columnIndex, int x): Updates the designated column with an int value.updateInt(String columnLabel, int x): Updates the designated column with an int value by label.updateLong(int columnIndex, long x): Updates the designated column with a long value.updateLong(String columnLabel, long x): Updates the designated column with a long value by label.updateNCharacterStream(int columnIndex, Reader x): Updates the designated column with a character stream value.updateNCharacterStream(int columnIndex, Reader x, long length): Updates the designated column with a character stream value, specifying the length of the stream in bytes.updateNCharacterStream(String columnLabel, Reader reader): Updates the designated column with a character stream value by label.updateNCharacterStream(String columnLabel, Reader reader, long length): Updates the designated column with a character stream value by label, specifying the length of the stream in bytes.updateNClob(int columnIndex, NClob nClob): Updates the designated column with ajava.sql.NClobvalue.updateNClob(int columnIndex, Reader reader): Updates the designated column with aNClobvalue using the given Reader object.updateNClob(int columnIndex, Reader reader, long length): Updates the designated column with aNClobvalue using the given Reader object, specifying the length of the stream in characters.updateNClob(String columnLabel, NClob nClob): Updates the designated column with ajava.sql.NClobvalue by label.updateNClob(String columnLabel, Reader reader): Updates the designated column with aNClobvalue using the given Reader object by label.updateNClob(String columnLabel, Reader reader, long length): Updates the designated column with aNClobvalue using the given Reader object by label, specifying the length of the stream in characters.updateNString(int columnIndex, String nString): Updates the designated column with a String value.updateNString(String columnLabel, String nString): Updates the designated column with a String value by label.updateNull(int columnIndex): Updates the designated column with a null value.updateNull(String columnLabel): Updates the designated column with a null value by label.updateObject(int columnIndex, Object x): Updates the designated column with an Object value.updateObject(int columnIndex, Object x, int scaleOrLength): Updates the designated column with an Object value, specifying the scale or length of the object.updateObject(int columnIndex, Object x, SQLType targetSqlType): Updates the designated column with an Object value, specifying the target SQL type.updateObject(int columnIndex, Object x, SQLType targetSqlType, int scaleOrLength): Updates the designated column with an Object value, specifying the target SQL type and scale or length.updateObject(String columnLabel, Object x): Updates the designated column with an Object value by label.updateObject(String columnLabel, Object x, int scaleOrLength): Updates the designated column with an Object value by label, specifying the scale or length of the object.updateObject(String columnLabel, Object x, SQLType targetSqlType): Updates the designated column with an Object value by label, specifying the target SQL type.updateObject(String columnLabel, Object x, SQLType targetSqlType, int scaleOrLength): Updates the designated column with an Object value by label, specifying the target SQL type and scale or length.updateRef(int columnIndex, Ref x): Updates the designated column with ajava.sql.Refvalue.updateRef(String columnLabel, Ref x): Updates the designated column with ajava.sql.Refvalue by label.updateRow(): Updates the underlying database with the new content of the current row in theResultSet.updateRowId(int columnIndex, RowId x): Updates the designated column with aRowIdvalue.updateRowId(String columnLabel, RowId x): Updates the designated column with aRowIdvalue by label.updateShort(int columnIndex, short x): Updates the designated column with a short value.updateShort(String columnLabel, short x): Updates the designated column with a short value by label.updateSQLXML(int columnIndex, SQLXML xmlObject): Updates the designated column with ajava.sql.SQLXMLvalue.updateSQLXML(String columnLabel, SQLXML xmlObject): Updates the designated column with ajava.sql.SQLXMLvalue by label.updateString(int columnIndex, String x): Updates the designated column with a String value.updateString(String columnLabel, String x): Updates the designated column with a String value by label.updateTime(int columnIndex, Time x): Updates the designated column with ajava.sql.Timevalue.updateTime(String columnLabel, Time x): Updates the designated column with ajava.sql.Timevalue by label.updateTimestamp(int columnIndex, Timestamp x): Updates the designated column with ajava.sql.Timestampvalue.updateTimestamp(String columnLabel, Timestamp x): Updates the designated column with ajava.sql.Timestampvalue by label.wasNull(): Indicates if the last column read had a value of SQL NULL.
ResultSet Interface Constants
FETCH_FORWARD: Indicates the rows in the result set are processed in the forward direction (first to last).FETCH_REVERSE: Indicates the rows in the result set are processed in reverse (last to first).FETCH_UNKNOWN: Indicates the order of processing rows in the result set is unknown.TYPE_FORWARD_ONLY: Indicates the result set allows the cursor to move only forward.TYPE_SCROLL_INSENSITIVE: Indicates the result set is scrollable and generally not sensitive to data changes.TYPE_SCROLL_SENSITIVE: Indicates the result set is scrollable and generally sensitive to data changes.CONCUR_READ_ONLY: Indicates the concurrency mode for a result set that cannot be updated.CONCUR_UPDATABLE: Indicates the concurrency mode for a result set that can be updated.HOLD_CURSORS_OVER_COMMIT: Indicates openResultSetobjects with this holdability will remain open when the current transaction is committed.CLOSE_CURSORS_AT_COMMIT: Indicates openResultSetobjects with this holdability will be closed when the current transaction is committed.
ResultSet Methods
- The
wasNullmethod returnstrueif the last column value read was SQL NULL andfalseotherwise. wasNullthrows anSQLExceptionif a database access error occurs or the method is called on a closed result set.- The
getStringmethod returns the value of the designated column in the current row as aStringin the Java programming language. getStringthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getBooleanmethod retrieves the designated column value as abooleanin the Java programming language. - A "0" value in
CHARorVARCHARorBIT,TINYINT,SMALLINT,INTEGER, orBIGINTis returned asfalse, and "1" is returned astrue. getBooleanthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getBytemethod returns the designated column value as abytein the Java programming language. getBytethrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getShortmethod returns the designated column value as ashortin the Java programming language. getShortthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getIntmethod returns the designated column value as anintin the Java programming language. getIntthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getLongmethod returns the designated column value as alongin the Java programming language. getLongthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getFloatmethod returns the designated column value as afloatin the Java programming language. getFloatthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getDoublemethod returns the designated column value as adoublein the Java programming language. getDoublethrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getBigDecimalmethod returns the designated column value as ajava.sql.BigDecimalin the Java programming language. getBigDecimalthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set, or aSQLFeatureNotSupportedExceptionif the JDBC driver does not support this method.- The
getBytesmethod returns the designated column value as abytearray in the Java programming language. getBytesthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getDatemethod returns the designated column value as ajava.sql.Dateobject in the Java programming language. getDatethrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getTimemethod returns the designated column value as ajava.sql.Timeobject in the Java programming language. getTimethrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getTimestampmethod returns the designated column value as ajava.sql.Timestampobject in the Java programming language. getTimestampthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getAsciiStreammethod returns the designated column value as a stream of ASCII characters. getAsciiStreamis suitable for retrieving largeLONGVARCHARvalues. The JDBC driver will do any necessary conversion from the database format into ASCII.getAsciiStreamthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.- The
getUnicodeStreammethod returns the designated column value as a stream of two-byte Unicode characters. getUnicodeStreamis suitable for retrieving largeLONGVARCHARvalues. The JDBC driver will do any necessary conversion from the database format into Unicode.getUnicodeStreamthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set, or aSQLFeatureNotSupportedExceptionif the JDBC driver does not support this method.- The
getBinaryStreammethod returns the designated column value as a stream of uninterpreted bytes. getBinaryStreamis suitable for retrieving largeLONGVARBINARYvalues.getBinaryStreamthrows anSQLExceptionif the column index is invalid, a database access error occurs or the method is called on a closed result set.
Methods with Column Label Arguments
- These methods are similar to the methods using column indexes, but they accept a
columnLabelas an argument. columnLabelis the label defined in the SQLASclause. If not specified, it is the column name.- These methods also throw an
SQLExceptionif thecolumnLabelis invalid, a database access error occurs, or the method is called on a closed result set.### ResultSet Object Methods - The
ResultSetobject represents the results of a database query. - The
ResultSetobject is accessible from theStatementobject that executed the query. ResultSetobject methods allow you to retrieve data from the result set.
getString Method
- Retrieves a value from the result set as a
String. - Takes a
columnLabelas an argument which can be the name of a column or a label defined using theSQL ASclause.
getBoolean Method
- Retrieves a value from the result set as a
boolean.
getByte Method
- Retrieves a value from the result set as a
byte.
getShort Method
- Retrieves a value from the result set as a
short.
getInt Method
- Retrieves a value from the result set as an
int.
getLong Method
- Retrieves a value from the result set as a
long.
getFloat Method
- Retrieves a value from the result set as a
float.
getDouble Method
- Retrieves a value from the result set as a
double.
getBigDecimal Method
- Retrieves a value from the result set as a
java.math.BigDecimal.
getBytes Method
- Retrieves a value from the result set as a
byte[]array.
getDate Method
- Retrieves a value from the result set as a
java.sql.Dateobject.
getTime Method
- Retrieves a value from the result set as a
java.sql.Timeobject.
getTimestamp Method
- Retrieves a value from the result set as a
java.sql.Timestampobject.
getAsciiStream Method
- Retrieves a value from the results set as a stream of ASCII characters.
- This method is suitable for retrieving large
LONGVARCHARvalues.
getUnicodeSteam Method
- Retrieves a value from the result set as a stream of two-byte Unicode characters.
- Use the
getCharacterStreammethod instead.
getBinaryStream Method
- Retrieves a value from the result set as a stream of uninterpreted bytes.
- This method is suitable for retrieving large
LONGVARBINARYvalues.
getWarnings Method
- Retrieves the first warning reported by calls on the
ResultSetobject. - Subsequent warnings on this
ResultSetobject will be chained to theSQLWarningobject that this method returns. - The warning chain is automatically cleared each time a new row is read.
clearWarnings Method
- Clears all warnings reported on the
ResultSetobject.
getCursorName Method
- Retrieves the name of the SQL cursor used by the
ResultSetobject.
getMetaData Method
- Retrieves the number, types, and properties of the
ResultSetobject's columns.
getObject Method
- Gets the value of a designated column in the current row of the
ResultSetobject as anObject. - This method returns the value of the given column as a Java object.
findColumn Method
- Maps the given
ResultSetcolumn label to the correspondingResultSetcolumn index.
getCharacterStream Method
- Retrieves the value of the designated column in the current row of the
ResultSetobject as ajava.io.Readerobject.
isBeforeFirst Method
- Determines if the cursor is before the first row in the
ResultSetobject. - This method is optional for ResultSets with a result set type of
TYPE_FORWARD_ONLY.
isAfterLast Method
- Determines if the cursor is after the last row in the
ResultSetobject. - This method is optional for ResultSets with a result set type of
TYPE_FORWARD_ONLY.
isFirst Method
- Determines if the cursor is on the first row of the
ResultSetobject. - This method is optional for ResultSets with a result set type of
TYPE_FORWARD_ONLY.
isLast Method
- Determines if the cursor is on the last row of the
ResultSetobject. - May be expensive as the JDBC driver might need to fetch ahead one row.
ResultSet methods
boolean isLast(): Determines if the cursor is positioned on the last row of the result set. It returnstrueif the cursor is on the last row andfalseotherwise. This method is optional for result sets with a type ofTYPE_FORWARD_ONLY.void beforeFirst(): Moves the cursor to the beginning of the result set, just before the first row. This has no effect if there are no rows in the result set.void afterLast(): Moves the cursor to the end of the result set, just after the last row. This has no effect if there are no rows in the result set.boolean first(): Moves the cursor to the first row of the result set. Returnstrueif there is a row,falseotherwise.boolean last(): Moves the cursor to the last row of the result set. Returnstrueif there is a row,falseotherwise.int getRow(): Returns the current row number (1-based index). Returns 0 if there is no current row. This method is optional forTYPE_FORWARD_ONLYresult sets.boolean absolute(int row): Moves the cursor to the specified row number. Positive values move the cursor forward, negative values move backward. A zero value moves the cursor before the first row. It returnstrueif the cursor is moved to a valid row,falseif beyond the first or last row.boolean relative(int rows): Moves the cursor relative to the current row, movingrowsnumber of rows forward or backward. This method is identical tonext()forrows = 1andprevious()forrows = -1. It returnstrueif the cursor is on a valid row andfalseotherwise.boolean previous(): Moves the cursor to the previous row. Returnstrueif positioned on a valid row,falseif before the first row.void setFetchDirection(int direction): Sets the fetch direction for the result set. The possible values are:FETCH_FORWARD,FETCH_REVERSE, andFETCH_UNKNOWN.int getFetchDirection(): Returns the current fetch direction of the result set.void setFetchSize(int rows): Hints the JDBC driver on the number of rows to fetch when more are needed. A zero value means the driver can choose the size.int getFetchSize(): Returns the current fetch size of the result set.int getType(): Returns the type of the result set, which can be one of the following:TYPE_FORWARD_ONLY,TYPE_SCROLL_INSENSITIVE, orTYPE_SCROLL_SENSITIVE.int getConcurrency(): Returns the concurrency mode of the result set, which is eitherCONCUR_READ_ONLYorCONCUR_UPDATABLE.boolean rowUpdated(): Returnstrueif the current row has been visibly updated by the owner or another,falseotherwise. This method is optional forCONCUR_READ_ONLYresult sets.boolean rowInserted(): Returnstrueif the current row is detected to have been inserted,falseotherwise. This method is optional forCONCUR_READ_ONLYresult sets.boolean rowDeleted(): Returnstrueif the current row is detected to have been deleted by the owner or another,falseotherwise. This method is optional forCONCUR_READ_ONLYresult sets.void updateNull(int columnIndex): Updates the designated column to a null value. This does not update the database itself.void updateBoolean(int columnIndex, boolean x): Updates the designated column with a boolean value. This does not update the database itself.void updateByte(int columnIndex, byte x): Updates the designated column with a byte value. This does not update the database itself.void updateShort(int columnIndex, short x): Updates the designated column with a short value. This does not update the database itself.void updateInt(int columnIndex, int x): Updates the designated column with an int value. This does not update the database itself.void updateLong(int columnIndex, long x): Updates the designated column with a long value. This does not update the database itself.void updateFloat(int columnIndex, float x): Updates the designated column with a float value. This does not update the database itself.void updateDouble(int columnIndex, double x): Updates the designated column with a double value. This does not update the database itself.void updateBigDecimal(int columnIndex, BigDecimal x): Updates the designated column with a BigDecimal value. This does not update the database itself.void updateString(int columnIndex, String x): Updates the designated column with a String value. This does not update the database itself.void updateBytes(int columnIndex, byte[] x): Updates the designated column with a byte[] value. This does not update the database itself.void updateDate(int columnIndex, Date x): Updates the designated column with a Date value. This does not update the database itself.void updateTime(int columnIndex, Time x): Updates the designated column with a Time value. This does not update the database itself.void updateTimestamp(int columnIndex, Timestamp x): Updates the designated column with a Timestamp value. This does not update the database itself.void updateAsciiStream(int columnIndex, InputStream x, int length): Updates the designated column with an InputStream value. This does not update the database itself.void updateBinaryStream(int columnIndex, InputStream x, int length): Updates the designated column with an InputStream value. This does not update the database itself.void updateCharacterStream(int columnIndex, Reader x, int length): Updates the designated column with a Reader value. This does not update the database itself.void updateObject(int columnIndex, Object x, int scaleOrLength): Updates the designated column with an Object value. This does not update the database itself.void updateObject(int columnIndex, Object x): Updates the designated column with an Object value. This does not update the database itself.void updateRef(int columnIndex, Ref x): Updates the designated column with a Ref value. This does not update the database itself.void updateBlob(int columnIndex, Blob x): Updates the designated column with a Blob value. This does not update the database itself.void updateClob(int columnIndex, Clob x): Updates the designated column with a Clob value. This does not update the database itself.void updateArray(int columnIndex, Array x): Updates the designated column with an Array value. This does not update the database itself.void updateRow(): Updates the underlying database with the changes made to the current row using the updater methods.void insertRow(): Inserts a new row into the database with the values set using the updater methods.void deleteRow(): Deletes the current row from the database.void refreshRow(): Refreshes the current row with the data from the database.void cancelRowUpdates(): Reverts all updates made to the current row since the last call toupdateRow,insertRoworrefreshRow. This does not affect the values in the database.void moveToInsertRow(): Moves the cursor to the insert row. This allows you to populate values for a new row to be inserted.void moveToCurrentRow(): Moves the cursor back to the current row from the insert row.void clearWarnings(): Clears the warning chain of this ResultSet object.SQLWarning getWarnings(): Retrieves the warning chain for this ResultSet object.String getCursorName(): Retrieves the cursor name specified when this ResultSet object was created.void close(): Closes this ResultSet object and releases the resources held by it.
Exceptions
SQLException: Thrown if a database access error occurs, or the method is called on a closed result set, or a result set type or concurrency restriction prevents the requested operation.SQLFeatureNotSupportedException: Thrown if the JDBC driver does not support the requested method.
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