Java Primitive Practice

Which of the following is not a primitive data type in Java?

• int
• String
• boolean
• char

Answer explanation

The String data type is not a primitive data type in Java; it is a reference type used to represent sequences of characters.

Which data type is used to store whole numbers in Java?

• float
• double
• int
• char

What is the range of the int data type in Java?

• -2,147,483,648 to 2,147,483,647
• -32,768 to 32,767
• 0 to 4,294,967,295
• -2,648 to 2,647

Which data type is used to store characters in Java?

• int
• float
• char
• boolean

Which of the following is a proper way to declare a variable in Java?

• myInteger = 100;

• char = 'a';

• int myNumber = 10;

• int myNumber;

Which of the following is a proper way to declare and initialize a variable in Java?

• myInteger = 100;

• char = 'a';

• int myNumber = 10;

• int myNumber;

Which of the following variable names follows best practices for naming a variable?

• 5apples

• someVariable

• applesnum

• numApples

What does the keyword final do?

• It’s necessary to declare a variable.

• Enables the use of println on a variable.

• It prevents variables from being altered.

• It indicates that the program has finished executing.

Which of the choices below is not a primitive type in Java?

• int

• String

• char

• double

Which of the following is true about primitive types in Java?

• The value stored in a variable can be changed during program execution.

• A variable is the name given to a memory location.

• All variables must be declared before use.

• All of these statements are correct for primitive variables in Java.