21 Questions
What is the purpose of an equal sign in Java?
To assign a value to a variable
Which of the following is not allowed when naming a variable in Java?
Using special characters in the variable name
What type of values does the 'double' data type hold in Java?
Decimal values
What is the maximum value that can be held by the 'int' data type in Java?
231-1
Which data type is used to hold a sequence of characters in Java?
char
What is the purpose of a string data type in Java?
To hold a sequence of characters
What is the purpose of a semi-colon in Java programming?
To end a statement
Why is String considered a non-primitive data type in Java?
Because it's constructed from other data types (characters)
What does it mean to initialize a variable?
To assign an initial value to the variable
How would you cast from double to int in Java?
(int) value
What is the purpose of declaring a variable?
To specify the data type and name of the variable
Why does String start with a capital letter in Java?
To differentiate it from primitive data types
When will you use casting in Java?
To change the data type of a value
What does it mean to declare a variable in Java?
To specify the data type and name of the variable
What happens during promotion in Java?
An integer is converted to a double automatically
Why do statements in Java need to end with a semi-colon?
To signify the end of a statement
What is the purpose of a semi-colon in Java programming?
To separate multiple statements in Java
Why is String considered a non-primitive data type in Java?
Because it is made up of other data types (characters)
What does it mean to declare a variable in Java?
To assign a data type and name to the variable
When will you use casting in Java?
To change the data type of a value during assignment
What happens during promotion in Java?
An integer is automatically converted into its corresponding double value
Explore the concept of variables and data types in programming, including how identifiers are used to name variables and how assignment operators are employed to assign values to variables. Learn about the rules for creating identifiers, such as avoiding the use of spaces.
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