Java

Who generates the Exceptions?

The programmer

What is an exception in Java?

An object representing an exceptional condition

What happens when an exception is thrown in Java?

The method that caused the error is terminated

Which of the following constructors for creating object of type wrappers is now deprecated?

Integer(String str) Signup and view all the answers

What is the return type of the static method parseFloat()?

float Signup and view all the answers

Which method provides additional functionalities to deal with individual data types in wrapper classes?

valueOf() Signup and view all the answers

Which class is used for exceptional conditions that user programs should catch?

Exception Signup and view all the answers

What is an important subclass of Exception?

RuntimeException Signup and view all the answers

What happens when the Java run-time system detects an attempt to divide by zero?

The execution of the program stops Signup and view all the answers

What is the purpose of a catch clause in a try-catch block?

To handle the exception Signup and view all the answers

Which statement about creating custom exception types is correct?

Custom exception types do not need to actually implement anything. Signup and view all the answers

What does the Exception class provide?

Multiple public constructors. Signup and view all the answers

What is the purpose of packages in Java?

To encapsulate classes and act as containers for classes and other subordinate packages. Signup and view all the answers

What is the default access level for a member that does not have an explicit access specification?

Package-private Signup and view all the answers

Which statement accurately describes the behavior of a nested try statement in Java?

If an inner try statement does not have a catch handler for a particular exception, the next try statement’s catch handlers are inspected for a match. Signup and view all the answers

Which statement accurately describes the behavior of the throw statement in Java?

The throw statement is used to explicitly throw an exception. Signup and view all the answers

Which statement accurately describes the behavior of the throws clause in Java?

The throws clause lists the types of exceptions that a method might throw. Signup and view all the answers

Which statement accurately describes the behavior of the finally block in Java?

The finally block will execute whether or not an exception is thrown. Signup and view all the answers

Which of the following is NOT a primitive type in Java?

String Signup and view all the answers

Which of the following is a type wrapper in Java?

Integer Signup and view all the answers

What is the process of encapsulating a value within an object called?

Boxing Signup and view all the answers

What is the output of the following code?

Integer iOb = 100; 
int i = iOb; 
System.out.println(i + " " + iOb);

100 100 Signup and view all the answers

Who is responsible for handling exceptions in Java?

The runtime system Signup and view all the answers

What is an exception in Java?

A runtime error in the code Signup and view all the answers

What does Java's exception handling bring to the object-oriented world?

Runtime error management Signup and view all the answers

Which method is now deprecated for creating objects of type wrappers in Java?

Integer(String str) Signup and view all the answers

What is the purpose of the static method valueOf() in wrapper classes in Java?

To create objects of type wrappers Signup and view all the answers

Which method is used to parse a string and return a float value in the Float wrapper class in Java?

parseFloat() Signup and view all the answers

Which of the following is NOT a type wrapper in Java?

int Signup and view all the answers

What is the purpose of autoboxing in Java?

To automatically encapsulate a primitive type into its equivalent type wrapper Signup and view all the answers

Which of the following is NOT a method provided by the Number class in Java?

byteValue() Signup and view all the answers

What is the output of the following code?

Integer iOb = 100; 
int i = iOb; 
System.out.println(i + " " + iOb);

100 100 Signup and view all the answers

Which class defines the exceptions that are not expected to be caught by your program?

Error Signup and view all the answers

What happens when the Java run-time system detects an attempt to divide by zero?

The execution of the program stops Signup and view all the answers

What is the purpose of the catch clause in a try-catch block?

To handle a run-time error Signup and view all the answers

What is the behavior of multiple catch clauses in a try-catch block?

Only the first catch clause whose type matches the exception is executed Signup and view all the answers

Which statement accurately describes the behavior of the throws clause in Java?

The throws clause is used to specify the types of exceptions that a method might throw. Signup and view all the answers

What is the purpose of a catch clause in a try-catch block?

The catch clause is used to catch and handle exceptions in Java programs. Signup and view all the answers

What is the purpose of packages in Java?

Packages are used to organize and group related classes and interfaces in Java. Signup and view all the answers

Which statement accurately describes the behavior of the finally block in Java?

The finally block is executed whether or not an exception is thrown. Signup and view all the answers

Which statement accurately describes the purpose of creating custom exception types in Java?

Custom exception types allow you to handle situations specific to your applications. Signup and view all the answers

Which statement accurately describes the purpose of packages in Java?

Packages act as containers for classes and other subordinate packages. Signup and view all the answers

Which statement accurately describes the behavior of the throws clause in Java?

The throws clause is used to declare that a method may throw one or more types of exceptions. Signup and view all the answers

Which statement accurately describes the behavior of the throw statement in Java?

The throw statement is used to explicitly throw an exception. Signup and view all the answers

Java

Questions and Answers

Who generates the Exceptions?

What is an exception in Java?

What happens when an exception is thrown in Java?

Which of the following constructors for creating object of type wrappers is now deprecated?

What is the return type of the static method parseFloat()?

Which method provides additional functionalities to deal with individual data types in wrapper classes?

Which class is used for exceptional conditions that user programs should catch?

What is an important subclass of Exception?

What happens when the Java run-time system detects an attempt to divide by zero?

What is the purpose of a catch clause in a try-catch block?

Which statement about creating custom exception types is correct?

What does the Exception class provide?

What is the purpose of packages in Java?

What is the default access level for a member that does not have an explicit access specification?

Which statement accurately describes the behavior of a nested try statement in Java?

Which statement accurately describes the behavior of the throw statement in Java?

Which statement accurately describes the behavior of the throws clause in Java?

Which statement accurately describes the behavior of the finally block in Java?

Which of the following is NOT a primitive type in Java?

Which of the following is a type wrapper in Java?

What is the process of encapsulating a value within an object called?

What is the output of the following code? Integer iOb = 100; int i = iOb; System.out.println(i + " " + iOb);

Who is responsible for handling exceptions in Java?

What is an exception in Java?

What does Java's exception handling bring to the object-oriented world?

Which method is now deprecated for creating objects of type wrappers in Java?

What is the purpose of the static method valueOf() in wrapper classes in Java?

Which method is used to parse a string and return a float value in the Float wrapper class in Java?

Which of the following is NOT a type wrapper in Java?

What is the purpose of autoboxing in Java?

Which of the following is NOT a method provided by the Number class in Java?

What is the output of the following code? Integer iOb = 100; int i = iOb; System.out.println(i + " " + iOb);

Which class defines the exceptions that are not expected to be caught by your program?

What happens when the Java run-time system detects an attempt to divide by zero?

What is the purpose of the catch clause in a try-catch block?

What is the behavior of multiple catch clauses in a try-catch block?

Which statement accurately describes the behavior of the throws clause in Java?

What is the purpose of a catch clause in a try-catch block?

What is the purpose of packages in Java?

Which statement accurately describes the behavior of the finally block in Java?

Which statement accurately describes the purpose of creating custom exception types in Java?

Which statement accurately describes the purpose of packages in Java?

Which statement accurately describes the behavior of the throws clause in Java?

Which statement accurately describes the behavior of the throw statement in Java?

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What is the output of the following code?

`Integer iOb = 100; int i = iOb; System.out.println(i + " " + iOb);`

What is the output of the following code?

`Integer iOb = 100; int i = iOb; System.out.println(i + " " + iOb);`