Java - Arithmetic Operators with Examples

Java Arithmetic Operators

Java arithmetic operators are used in mathematical expressions in the same way that they are used in algebra. The following table lists the arithmetic operators −

Assume integer variable A holds 10 and variable B holds 20, then −

The following programs are simple examples which demonstrate the arithmetic operators. Copy and paste the following Java programs as Test.java file, and compile and run the programs −

Example 1

In this example, we're creating two variables a and b and using arithmatic operators. We've performed addition, subtraction, multiplication and division operations and printed the results.

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("b / a = " + (b / a) );
   }
}

Output

a + b = 30
a - b = -10
a * b = 200
b / a = 2

Example 2

In this example, we're creating three variables a,b and c and using arithmatic operator %. We've performed Modulus operations between their values.

public class Test {

   public static void main(String args[]) {
      int a = 10;
      int b = 20;
      int c = 25;

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

Output

b % a = 0
c % a = 5

Example 3

In this example, we're creating two variables a and d and using arithmatic operators. We've performed post increment, pre increment, post decrement and post increment operations and printed the results.

public class Test {

   public static void main(String args[]) {
      int a = 10;
      int d = 25;

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

      // Check the difference in d++ and ++d
      System.out.println("d++   = " +  (d++) );
      System.out.println("++d   = " +  (++d) );
   }
}

Output

a++   = 10
b--   = 11
d++   = 25
++d   = 27