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The Java provides a rich set of operators for managing variables. Every statements can be separated into the following groups:

The Java Arithmetic operators are used in mathematical expressions in the same way as they are used in algebra also. Suppose the integer variable A is 10, and the variable B is 20. The given below table lists the arithmetic operators in Java:

The following example shows software arithmetic operators. Copy and paste the following java code into the test.java file compile and then run this program:

public class Test {

  public static void main(String args[]) {
     int a = 10;
     int b = 20;
     int c = 25;
     int d = 25;
     System.out.println("a + b = " + (a + b));
     System.out.println("a - b = " + (a - b));
     System.out.println("a * b = " + (a * b));
     System.out.println("b / a = " + (b / a));
     System.out.println("b % a = " + (b % a));
     System.out.println("c % a = " + (c % a));
     System.out.println("a++   = " +  (a++));
     System.out.println("b--   = " +  (a--));
     // Check the difference in d ++ and ++ d
     System.out.println("d++   = " +  (d++));
     System.out.println("++d   = " +  (++d));
  }
} 

This will produce the following result:

a + b = 30
a - b = -10
a * b = 200
b / a = 2
b % a = 0
c % a = 5
a++   = 10
b--   = 11
d++   = 25
++d   = 27

Here the following comparison operators supported in Java language. Suppose the variable A is 10 and the variable B is 20. The given below table lists relational operators or comparison operators in Java:

The following example shows the software comparison operators in Java. Copy and paste the following java code into the test.java file compile and then run this program:

public class Test {

  public static void main(String args[]) {
     int a = 10;
     int b = 20;
     System.out.println("a == b = " + (a == b) );
     System.out.println("a != b = " + (a != b) );
     System.out.println("a > b = " + (a > b) );
     System.out.println("a < b = " + (a < b) );
     System.out.println("b >= a = " + (b >= a) );
     System.out.println("b <= a = " + (b <= a) );
  }
} 

Output

a == b = false
a != b = true
a > b = false
a < b = true
b >= a = true
b <= a = false

Java defines several bitwise operators that can be applied to integer types: int, long, short, char, and byte. In Java, a bitwise operator is working on bits and performs a bit-by-bit operation. Suppose, if a = 60; and b = 13; then in the binary format they will be the following:

a = 0011 1100
b = 0000 1101
-------
a & b = 0000 1100
a | b = 0011 1101
a ^ b = 0011 0001
~ a = 1100 0011

Assume the integer variable A is 60, and the variable B is 13. The following table lists the bitwise operators in Java:

The following example shows program-by-bit operators in Java. Copy and paste the following java code into the test.java file compile and then run this program:

public class Test {

  public static void main(String args[]) {
     int a = 60;	/* 60 = 0011 1100 */  
     int b = 13;	/* 13 = 0000 1101 */
     int c = 0;

     c = a & b;       /* 12 = 0000 1100 */ 
     System.out.println("a & b = " + c );

     c = a | b;       /* 61 = 0011 1101 */
     System.out.println("a | b = " + c );

     c = a ^ b;       /* 49 = 0011 0001 */
     System.out.println("a ^ b = " + c );

     c = ~a;          /*-61 = 1100 0011 */
     System.out.println("~a = " + c );

     c = a << 2;     /* 240 = 1111 0000 */
     System.out.println("a << 2 = " + c );

     c = a >> 2;     /* 215 = 1111 */
     System.out.println("a >> 2  = " + c );

     c = a >>> 2;     /* 215 = 0000 1111 */
     System.out.println("a >>> 2 = " + c );
  }
} 

Output

a & b = 12
a | b = 61
a ^ b = 49
~a = -61
a << 2 = 240
a >> 15
a >>> 15

Suppose the logical variable A is true and the variable B stores false. The following table lists the logical operators in Java:

The following simple example shows the software logical operators in Java. Copy and paste the following java code into the test.java file compile and run this program:

public class Test {

  public static void main(String args[]) {
     boolean a = true;	
     boolean b = false;	

     System.out.println("a && b = " + (a&&b));

     System.out.println("a || b = " + (a||b) );

     System.out.println("!(a && b) = " + !(a && b));
  }
} 

This will produce the following result:

a && b = false
a || b = true
!(a && b) = true

The given below assignment operators are supported by the Java:

The following simple example shows the software logical operators in Java. Copy and paste the following java code into the test.java file compile and run this program:

public class Test {

  public static void main(String args[]) {
     int a = 10;	
     int b = 20;
     int c = 0;

     c = a + b;
     System.out.println("c = a + b = " + c );

     c += a ;
     System.out.println("c += a  = " + c );

     c -= a ;
     System.out.println("c -= a = " + c );

     c *= a ;
     System.out.println("c *= a = " + c );

     a = 10;
     c = 15;
     c /= a ;
     System.out.println("c /= a = " + c );

     a = 10;
     c = 15;
     c %= a ;
     System.out.println("c %= a  = " + c );

     c <<= 2 ;
     System.out.println("c <<= 2 = " + c );

     c >>= 2 ;
     System.out.println("c >>= 2 = " + c );

     c >>= 2 ;
     System.out.println("c >>= a = " + c );

     c &= a ;
     System.out.println("c &= 2  = " + c );
  
     c ^= a ;
     System.out.println("c ^= a   = " + c );

     c |= a ;
     System.out.println("c |= a   = " + c );
  }
}

Output

c = a + b = 30
c += a  = 40
c -= a = 30
c *= a = 300
c /= a = 1
c %= a  = 5
c <<= 2 = 20
c >>= 2 = 5
c >>= 2 = 1
c &= a  = 0
c ^= a   = 10
c |= a   = 10

There are some other operators supported by the Java.

variable x = (expression)? if true: if false

Below is an example:

public class Test {
 
   public static void main (String args []) {
      int a, b;
      a = 10;
      b = (a == 1)? 20: 30;
      System.out.println ("Value b:" + b);
 
      b = (a == 10)? 20: 30;
      System.out.println ("Value b:" + b);
   }
}

Output

Value of b: 30
Value of b: 20

The instanceof operator checks whether an object is of a specific type (type of class or interface type) and is used only for referenced object variables. The instanceof operator is written as:

(Reference object variable) instanceof (class / interface type)

If the reference object variable on the left side of the statement is tested for the class / interface type on the right side, the result is true. Below is an example and description of the instanceof operator:

public class Test {
 
   public static void main (String args []) {
      String name = "Oleg";
      // The following will return true, because the String type
      boolean result = name instanceof String;
      System.out.println (result);
   }
}

Output

true

This statement will still return true if the compared object is compatible with the type to the destination right. Below is another example:

class Vehicle {}
 
public class Car extends Vehicle {
   public static void main(String args[]){
      Vehicle a = new Car();
      boolean result =  a instanceof Car;
      System.out.println( result );
   }
}

Output

true