Arnaiz Mod. Prelim Exam Java and MySQL

Which of the following is a valid variable name in Java?

• 2value

• value_2

• value-2

• @value

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

• 0

• null

• undefined

• -1

Which keyword is used to declare a constant variable in Java?

• const

• static

• final

• constant

What is the size of a float variable in Java?

• 4 bytes

• 2 bytes

• 8 bytes

• 1 byte

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

• int

• boolean

• String

• char

How do you declare a double variable named price?

• double = price;

• price double;

• double price;

• price = double;

Which operator is used for assignment in Java?

• ==

• :=

• =

• =>

Which data type should you use to store true or false values?

• char

• boolean

• String

• byte

What is the result of the following expression: 5 + 3 * 2?

• 11

• 16

• 10

• 13

What does the char data type store?

• A whole number

• Decimal number

• Single character

• Boolean value