Operator in Java - Quiz 

int ++a = 100 ; 
System.out.println( ++a ) ;
What will be the output of the above fraction of code ?

  • A100
  • BDisplays error as ++a is not enclosed in double quotes in println statement
  • C Compiler displays error as ++a is not a valid identifier
  • DNone of these

What is the output of the following program ? 
class Numbers{
        public static void main(String args[]){
                int a=20, b=10;
                if((a < b) && (b++ < 25)){
                        System.out.println("This is any language logic");
                }
                System.out.println(b); 
        }
}

  • A12
  • B 11
  • C10
  • DCompilation Error

Select from among the following character escape code which is not available in Java.

  • A\t
  • B\r
  • C\a
  • D \\

What will be the output? 
if(1 + 1 + 1 + 1 + 1 == 5){
        System.out.print("TRUE");
}
else{
        System.out.print("FLASE");
}

  • ATRUE
  • BFALSE
  • CCompiler Error
  • DNone of these

Which of the following is the correct expression that evaluates to true if the number x is between 1 and 100 or the number is negative?

  • A1 < x < 100 || x < 0
  • B((x < 100) && (x > 1)) || (x < 0)
  • C((x < 100) && (x > 1)) && (x < 0)
  • D(1 > x > 100) || (x < 0)

what will be the output? 
public class Test{

      public static void main(String args[]){

            System.out.print(""=="");

            System.out.print(" ");

            System.out.print("A"=="A");

            System.out.print(" ");

            System.out.print("a==A");

      }

}

  • A"==" A"=="A a==A
  • Btrue true false
  • Ctrue true a==A
  • DCompilation Fails

Determine output: 
public class Test{
      public static void main(String... args){
            int a=5 , b=6, c=7;
            System.out.println("Value is "+ b + c);
            System.out.println(a + b + c);
            System.out.println("String " + (b+c));
      }
}

  • AValue is 67 18 String 13
  • BValue is 13 18 String 13
  • CValue is 13 18 String
  • DCompilation fails

What will be the output for the below code? 
class Test{
        public void display(int x, double y){
                System.out.println(x+y);
        } 
        public double display(int p, double q){
                return (p+q);
        }
        public static void main(String args[]){
                Test test = new Test();
                test.display(4, 5.0);
                System.out.println(test.display(4, 5.0));
        }
}

  • A9.0 9.0
  • B9 9
  • CCompilation Error
  • DNone of these

What is the purpose of a '?' in programming languages?

  • ATo denote a comment
  • BTo represent a ternary operator
  • CTo indicate a logical OR
  • DTo signify the beginning of a question

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