Quiz Discussion

What is the numerical range of a char data type in Java?Which of these coding types is used for data type characters in Java?

• 1]

  -128 to 127 ASCII

• 2]

  0 to 256 ISO-LATIN-1

• 3]

  0 to 32767 UNICODE

• 4]

  0 to 65535 UNICODE

Which of the below data type doesn’t support overloaded methods for +,-,* and /?

• 1]

  int

• 2]

  float

• 3]

  double

• 4]

  BigDecimal

What is the output of below code snippet?

   double a = 0.02;
   double b = 0.03;
   double c = b - a;
   System.out.println(c);
 
   BigDecimal _a = new BigDecimal("0.02");
   BigDecimal _b = new BigDecimal("0.03");
   BigDecimal _c = b.subtract(_a);
   System.out.println(_c);

• 1]

  0.009999999999999998
  0.01

• 2]

  0.01
  0.009999999999999998

• 3]

  0.01
  0.01

• 4]

  0.009999999999999998
  0.009999999999999998

Which of these literals can be contained in float data type variable?

• 1]

  -1.7e+308

• 2]

  -3.4e+038

• 3]

  +1.7e+308

• 4]

  -3.4e+050

Which one is a valid declaration of a boolean?

• 1]

  boolean b1 = 1;

• 2]

  boolean b2 = ‘false’;

• 3]

  boolean b3 = false;

• 4]

  boolean b4 = ‘true’

What will be the output of the following Java code? - Area Of Circle

public class area {
        public static void main(String args[]) 
        {    
             double r, pi, a;
             r = 9.8;
             pi = 3.14;
             a = pi * r * r;
             System.out.println(a);
        } 
    }

• 1]

  301.5656

• 2]

  301

• 3]

  301.56

• 4]

  301.56560000

What is the output of this program?

public class mainclass {
        public static void main(String args[]) 
        {
            char a = 'A';
            a++;
            System.out.print((int)a);
        } 
    }

• 1]

  66

• 2]

  67

• 3]

  65

• 4]

  64

What is the range of byte data type in Java?

• 1]

  -128 to 127

• 2]

  -32768 to 32767

• 3]

  -2147483648 to 2147483647

• 4]

  None of the mentioned

What will be the output of the following Java code? - Increment / Decrement

public class increment {
   public static void main(String args[]) 
     {        
         int g = 3;
         System.out.print(++g * 8);
     } 
}

• 1]

  25

• 2]

  24

• 3]

  32

• 4]

  33

What will be the output of these statement?

public class output {
        public static void main(String args[]) 
        {
            double a, b, c;
            a = 3.0/0;
            b = 0/4.0;
            c = 0/0.0;
 
	        System.out.println(a);
            System.out.println(b);
            System.out.println(c);
        } 
    }

• 1]

  Infinity

• 2]

  0.0

• 3]

  NaN

• 4]

  all of the mentioned