Quiz Discussion

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 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 is the advantage of BigDecimal over double?

• 1]

  Syntax

• 2]

  Memory usage

• 3]

  Garbage creation

• 4]

  Precision

What is the output of this program?

public class array_output {
        public static void main(String args[]) 
        {    
            char array_variable [] = new char[10];
            for (int i = 0; i < 10; ++i) {
                array_variable[i] = 'i';
                System.out.print(array_variable[i] + "" );
                i++;
            }
        } 
    }

• 1]

  i i i i i

• 2]

  0 1 2 3 4

• 3]

  i j k l m

• 4]

  None of the mentioned

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

• 1]

  int

• 2]

  float

• 3]

  double

• 4]

  BigDecimal

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 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

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 byte data type in Java?

• 1]

  -128 to 127

• 2]

  -32768 to 32767

• 3]

  -2147483648 to 2147483647

• 4]

  None of the mentioned

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