Quiz Discussion

Which one is a valid declaration of a boolean?

Course Name: Java

  • 1]

    boolean b1 = 1;

  • 2]

    boolean b2 = ‘false’;

  • 3]

    boolean b3 = false;

  • 4]

    boolean b4 = ‘true’

Solution
No Solution Present Yet

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# Quiz
1
Discuss

An expression involving byte, int, and literal numbers is promoted to which of these?

  • 1]

    float

  • 2]

    byte

  • 3]

    long

  • 4]

    int

Solution
2
Discuss

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

  • 1]

    int

  • 2]

    float

  • 3]

    double

  • 4]

    BigDecimal

Solution
3
Discuss

What will be the output of the following Java code? - Average

public class average {
   public static void main(String args[])
     {
         double num[] = {5.5, 10.1, 11, 12.8, 56.9, 2.5};
         double result;
         result = 0;
         for (int i = 0; i < 6; ++i) 
         {
           result = result + num[i];
         } 
	    System.out.print(result/6);
 
      } 
  }

 

  • 1]

    16.34

  • 2]

    16.566666644

  • 3]

    16.46666666666667

  • 4]

    16.46666666666666

Solution
4
Discuss

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

Solution
5
Discuss

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

Solution
6
Discuss

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

  • 1]

    int

  • 2]

    float

  • 3]

    double

  • 4]

    long

Solution
7
Discuss

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

Solution
8
Discuss

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

Solution
9
Discuss

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

Solution
10
Discuss

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

Solution
# Quiz