Java Programming Quiz

Who developed Java and when?

• James Gosling, 1991

• Bjarne Stroustrup, 1985

• Guido van Rossum, 1995

• Dennis Ritchie, 1972

Which is not a Java buzzword?

• Robust

• Secure

• Platform Dependent

• Object-Oriented

What is the size of an int in Java?

• 2 bytes

• 4 bytes

• 8 bytes

• Depends on OS

Output of the code below? int a = 5, b = 2; System.out.println(a / b);

• 2.5

• 2

• 3

• Compilation Error

Correct way to declare an array in Java?

• int arr[] = new int[5];

• int arr = int[5];

• arr[] = new int[5];

• array int arr[5];

What does this print? int[] nums = {1, 2, 3}; System.out.println(nums[1]);

• 1

• 2

• 3

• Compilation Error

Output of this code? int x = 10; x += 5 * 2; System.out.println(x);

• 20

• 30

• 25

• 15

Correct condition to check if a number is even?

• if(num % 2 = 0)

• if(num / 2 == 0)

• if(num % 2 == 0)

• if(num == 2)

What is printed? class Test { public static void main(String[] args) { System.out.println("Hello Java"); } }

• Hello Java

• Hello

• Java

• Compilation Error

Which is true about constructors?

• Constructors must have a return type

• Constructors cannot be overloaded

• Constructors initialize objects

• Constructors are called manually