Wrapper Advance

1

What is the output of this program?

    class Output {
        public static void main(String args[]) {
            Long i = new Long(256);  
            System.out.print(i.hashCode());
        }
    }
A. 256
B. 256.0
C. 256.00
D. 257.00

2

What is the output of this program?

 
    class Output {
        public static void main(String args[]) {
            Double y = new Double(257.57812);
	    Double i = new Double(257.578123456789);  
            try {
	        int x = i.compareTo(y);
                System.out.print(x);
            }
            catch(ClassCastException e) {
                System.out.print("Exception");
            }
	}
    }
A. 0
B. 1
C. Exception
D. None of the mentioned

3

What is the output of this program?

    class Output {
        public static void main(String args[]) {
            Double y = new Double(257.57812);
	    Double i = new Double(257.578123456789);  
            try {
	        int x = i.compareTo(y);
                System.out.print(x);
            }
            catch(ClassCastException e) {
                System.out.print("Exception");
            }
	}
    }
A. 0
B. 1
C. Exception
D. None of the mentioned

4

What is the output of this program?

    class Output {
        public static void main(String args[]) {
	    char a = '@';
            boolean x = Character.isLetter(a);
            System.out.print(x);
        }
    }
A. b
B. c
C. B
D. C

5

What is the output of this program?

    class Output {
        public static void main(String args[]) {
	   String x = Boolean.toString(false);
        }
    }
A. true
B. false
C. System Dependent
D. Compilation Error