1.1.2 variables and data types

Which of the following is a primitive data type in Java?

• int

• boolean

• float

• String

What is the size of the 'int' data type in Java?

• 16 bytes

• 4 bytes

• 8 bytes

• 2 bytes

Which of the following is a valid declaration of a 'double' variable in Java?

• boolean variableName;

• double variableName;

• int variableName;

• String variableName;

What is the default value of a 'boolean' variable in Java?

• false

• 0

• null

• true

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

• string

• boolean

• float

• int

What is the range of values that can be stored in an 'int' data type in Java?

• -100,000 to 100,000

• -10,000,000 to 10,000,000

• -2,147,483,648 to 2,147,483,647

• -1,000,000 to 1,000,000

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

• int[]

• boolean[]

• char[]

• string[]

What is the size of the 'double' data type in Java?

• 8 bytes

• 4 bytes

• 16 bytes

• 2 bytes

Which data type is used to store true/false values in Java?

• float

• string

• boolean

• int

What is the default value of an 'int' variable in Java?

• null

• -1

• 1

• 0