下面的简单示例程序演示了算术运算符。复制并粘贴下面的Java程序于Test.java的文件，并编译和运行这个程序：

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) );
  }
} 

这将产生以下结果:

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