java 自增自减运算符的应用

源程序：

public class Test{
 public static void main(String args[]){
  int x , y , a , b ;
  x = 3 ;
  y = 3 ;
  a = 6 ;
  b = 6 ;
  System.out.println("x = " + x) ;
  System.out.println("\t x++ = " + (x++) + "\t x = " + x) ;
  System.out.println("y = " + y) ;
  System.out.println("\t ++y = " + (++y) + "\t y = " + y) ;
  System.out.println("a = " + a) ;
  System.out.println("\t a-- = " + (a--) + "\t a = " + a) ;
  System.out.println("b = " + b) ;
  System.out.println("\t --b = " + (--b) + "\t x = " + b) ;
 }
}

运行结果：