Quiz Discussion

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

Which of the following are legal lines of Java code?

   1. int w = (int)888.8;
   2. byte x = (byte)100L;
   3. long y = (byte)100;
   4. byte z = (byte)100L;

• 1]

  1 and 2

• 2]

  2 and 3

• 3]

  3 and 4

• 4]

  All statements are correct

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

• 1]

  int

• 2]

  float

• 3]

  double

• 4]

  long

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 these values can a boolean variable contain?

• 1]

  True & False

• 2]

  0 & 1

• 3]

  Any integer value

• 4]

  True

What is the range of short data type in Java?

• 1]

  -128 to 127

• 2]

  -32768 to 32767

• 3]

  -2147483648 to 2147483647

• 4]

  None of the mentioned

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

What is the base of BigDecimal data type?

• 1]

  Base 2

• 2]

  Base 8

• 3]

  Base 10

• 4]

  Base e

Which of the following is the advantage of BigDecimal over double?

• 1]

  Syntax

• 2]

  Memory usage

• 3]

  Garbage creation

• 4]

  Precision

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