Java_2

What is the default value of an int in Java?

• 0.0

• null

• 0

• Undefined

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

• float

• boolean

• String

• char

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

• 4 bytes

• 8 bytes

• 2 bytes

• 16 bytes

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

• final

• constant

• static

• var

What is the result of 5 / 2 if both operands are integers?

• 2.5

• 2

• 3

• Error

What happens if there is no else block after an if statement?

• Compilation error

• Program terminates

• Only the if block executes if the condition is true

• The next if block executes

What happens if a switch statement does not contain a break?

• Compilation error

• Only the matching case executes

• Fall-through occurs (subsequent cases execute until a break)

• None of the above

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

• float f = 3.14;

• float f = 3.14f;

• real d=3.14;

• None

What will be the output of System.out.println(10 + 5 + "Java" + 10 + 5);?

• 15Java105

• 105Java15

• Java1015

• Compilation Error

What is the correct way to write a ternary (conditional) statement in Java?

• (condition) ? expression1 : expression2;

• if (condition) { expression1 } else { expression2 }

• condition ? expression1, expression2;

• None of the above