Java Operators Test(1st)

Determine output:

public class Test{
      static int i = 5;
      public static void main(String... args){
            System.out.println(i++);
            System.out.println(i);
            System.out.println(++i);
            System.out.println(++i+i++);
      }
}

Determine output:

public class Test{
      static int i = 5;
      public static void main(String... args){
            System.out.println(i++);
            System.out.println(i);
            System.out.println(++i);
            System.out.println(++i+i++);
      }
}

1 Mark(s)

6 7 6 16
5 6 7 16
None of these
5 6 6 16
6 6 6 16

int ++a = 100 ; 
System.out.println( ++a ) ;

What will be the output of the above fraction of code ?

int ++a = 100 ; 
System.out.println( ++a ) ;

What will be the output of the above fraction of code ?

1 Mark(s)

None of these
100
Compiler displays error as ++a is not a valid identifier
Displays error as ++a is not enclosed in double quotes in println statement

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?

1 Mark(s)

((x < 100) && (x > 1)) && (x < 0)
((x < 100) && (x > 1)) || (x < 0)
(1 > x > 100) || (x < 0)
1 < x < 100 || x < 0

int x = 0, y = 0 , z = 0 ;
x = (++x + y-- ) * z++;

What will be the value of "x" after execution ?

int x = 0, y = 0 , z = 0 ;
x = (++x + y-- ) * z++;

What will be the value of "x" after execution ?

1 Mark(s)

1
-1
-2
0
2

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); 
        }
}

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); 
        }
}

1 Mark(s)

11
10
12
Compilation Error

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

1 Mark(s)

What will be the output?

public class Test{
      public static void main(String args[]){
            int a = 42;
            double b = 42.25;
            System.out.print((a%10)+" "+(b%10));
      }
}

What will be the output?

public class Test{
      public static void main(String args[]){
            int a = 42;
            double b = 42.25;
            System.out.print((a%10)+" "+(b%10));
      }
}

1 Mark(s)

2 2.5
4.2 4.225
2 4.225
42 42.5
Compilation Error

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");

      }

}

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");

      }

}

1 Mark(s)

true true a==A
true true false
'==' A '=='A a==A
Compilation Fails
None of the above

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));
      }
}

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));
      }
}

1 Mark(s)

Value is 13 18 String 13
Compilation fails
Value is 67 18 String 13
None of these
Value is 13 18 String

What will be the output for the below code ?

class A{
      public void printValue(){
            System.out.println("A");
      }
}
class B extends A{
      public void printValue(){
            System.out.println("B");
      }
}

1. public class Test{
2.       public static void main(String... args){
3.             A b = new B();
4.             newValue(b);
5.       }
6.       public static void newValue(A a){
7.             if(a instanceof B){
8.                   ((B)a).printValue();
9.             }
10.      }
11. }

What will be the output for the below code ?

class A{
      public void printValue(){
            System.out.println("A");
      }
}
class B extends A{
      public void printValue(){
            System.out.println("B");
      }
}

1. public class Test{
2.       public static void main(String... args){
3.             A b = new B();
4.             newValue(b);
5.       }
6.       public static void newValue(A a){
7.             if(a instanceof B){
8.                   ((B)a).printValue();
9.             }
10.      }
11. }

1 Mark(s)

B
Compilation fails with an error at line 4
None of these
A
Compilation fails with an error at line 8

What will be the output after compiling and running following code?

1. public class Test{
2.       public static void main(String... args){
3.             int x =5;
4.             x *= 3 + 7;
5.             System.out.println(x);
6.       }
7. }

What will be the output after compiling and running following code?

1. public class Test{
2.       public static void main(String... args){
3.             int x =5;
4.             x *= 3 + 7;
5.             System.out.println(x);
6.       }
7. }

1 Mark(s)

None of these
22
Compilation fails with an error at line 4
50
10

What will be the output?

if(1 + 1 + 1 + 1 + 1 == 5){
        System.out.print("TRUE");
}
else{
        System.out.print("FLASE");
}

What will be the output?

if(1 + 1 + 1 + 1 + 1 == 5){
        System.out.print("TRUE");
}
else{
        System.out.print("FLASE");
}

1 Mark(s)

TRUE
None of these
Compiler Error
FALSE

Java Operators Test(1st) : Question 1 of 12