Core Java : Intermediates

1. What is the range of sort data type in Java?

-32768 to 32767
-128 to 127
-2147483648 to 2147483647
None of the above

2. What is the range of byte data type in Java?

-128 to 127
-32768 to 32767
-2147483648 to 2147483647
None of the above

3. Which data type value is returned by all transcendental math functions?

long
float
int
double

4. In java string is ________

class
variable
character array
object

5. What will be the output of the code ________?

    class test
        
        {
        
            public static void main(String args[])
        
            {
                double a, b,c;

                a = 5.0/0;

                b = 0.0/0;

                c=0/0.0;
    
                System.out.println(a);

                System.out.println(b);

                System.out.println(c);

            }

        }

Infinity
0.0
NaN(Not a number)
All of the above

6. What will be the output of the code ________?

    class increment_test
        
        {
        
            public static void main(String args[])
        
            {
                int a = 5;

                System.out.print(++a*9);

            }

        }

55
54
45
63

7. What will be the output of the code ________?

    class area_test
        
        {
        
            public static void main(String args[])
        
            {
                double r, pi, a;

                r = 9.8;
                 
                pi = 3.14;
                
                a = pi * r * r;
                 
	        System.out.println(a);

            }

        }

301.5656
301.56
301
301.56560000

8. Boolean variable containes ________ of values?

Any integer value
True & False
Character value
Decimal number value

9. Which of these occupy first 0 to 127 in Unicode character set used for characters in Java?

ASCII & ISO-LATIN1
ISO-LATIN-1
ASCII
None of the above

10. Which of the following is a valid declaration of a boolean statement?

boolean b1 = ‘false’;
boolean b2 = 1;
boolean b3 = ‘true’
boolean b4 = false;