What is the correct way to declare a variable in Java?

• int variableName;

• int: variableName;

• var variableName int;

• int variableName = 0;

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

• int

• boolean

• string

• float

What is the output of the following code: System.out.println(5 + 3);?

• 8

• 10

• 9

• 6

Which keyword is used to create a class in Java?

• define

• class

• create

• function

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

• 1

• null

• false

• true

Which control structure is used to execute a block of code multiple times?

• Function

• Condition

• Loop

• Switch

What is the purpose of the 'break' statement in Java?

• The 'break' statement is used to skip the current iteration of a loop.

• The 'break' statement is used to define a new method in Java.

• The 'break' statement is used to pause execution of a program.

• The 'break' statement is used to exit loops or switch statements.

Which of the following is NOT a valid loop in Java?

• repeat-until

• foreach

• while

• do-while

What is the output of the following code: System.out.println(10 > 5 ? 'A' : 'B');?

• C

• A

• B

• 10

What is the main principle of Object-Oriented Programming?

• Data encapsulation only

• Static typing only

• Encapsulation, inheritance, polymorphism, and abstraction.

• Single inheritance only