JAVA

What will be the output of the following Java code?

1. class increment {

2. public static void main(String args[])

3. {

4. int g = 3;

5. System.out.print(++g * 8);

6. }

7. }

• A) 32
  

• B) 33

• C) 24

• D) 25

What will be the output of the following Java program?

1. class output {

2. public static void main(String args[]){

3. double a, b,c;

4. a = 3.0/0;

5. b = 0/4.0;

6. c=0/0.0; 

7. System.out.println(a);

8. System.out.println(b);

9. System.out.println(c);

10. }

11. }

• Infinity
• NaN
• Infinity 0.0 NaN
• 0.0

What will be the output of the following Java program?

1. class variable_scope

2. {

3. public static void main(String args[])

4. {

5. int x;

6. x = 5;

7. {

8. int y = 6;

9. System.out.print(x + " " + y);

10. }

11. System.out.println(x + " " + y);

12. }

13. }

• a) Compilation error

• b) Runtime error
  

• c) 5 6 5 6

• d) 5 6 5

What will be the output of the following Java program?

1. class leftshift_operator

2. {

3. public static void main(String args[])

4. {

5. byte x = 64;

6. int i;

7. byte y;

8. i = x << 2;

9. y = (byte) (x << 2);

10. System.out.print(i + " " + y);

11. }

12. }

• 256 0
• 256 64
• 64 0
• 128 0

What will be the output of the following Java code?

1. class box

2. {

3. int width;

4. int height;

5. int length;

6. }

7. class main

8. {

9. public static void main(String args[])

10. {

11. box obj = new box();

12. obj.width = 10;

13. obj.height = 2;

14. obj.length = 10;

15. int y = obj.width * obj.height * obj.length;

16. System.out.print(y);

17. }

18. }

• 100

• 400

• 200

• 12

What is Truncation in Java?

• Floating point value is assigned to floating type

• Floating point value assigned to integer type.

• Integer point value assigned to integer type

• Integer point value assigned to floating type

What will be the output of the following Java program?

1. class Output

2. {

3. public static void main(String args[])

4. {

5. int arr[] = {1, 2, 3, 4, 5};

6. for ( int i = 0; i < arr.length - 2; ++i)

7. System.out.print(arr[i] + " ");

8. }

9. }

• 1 2 3 4
• 2 3 4 5
• 0 1 2
• 1 2 3

What will be the output of the following Java code snippet?

1. class abc

2. {

3. public static void main(String args[])

4. {

5. if(args.length>0)

6. System.out.println(args.length);

7. }

8. }

• The snippet compiles and runs but does not print anything

• The output will be an error message if no arguments are provided.
• The output will be the first command-line argument passed.
• The output will always be zero regardless of the arguments.

What is the extension of compiled java classes?

• .class
• .classfile
• .exe
• .java

Which exception is thrown when java is out of memory?

• HeapSpaceError
• OutOfMemoryError
• MemoryOverflowError
• InsufficientMemoryError