increment.java

来自「Java 入门书的源码」· Java 代码 · 共 24 行

//Copyright (c) 1998, Arthur Gittleman
//This example is provided WITHOUT ANY WARRANTY either expressed or implied.

/*  Uses the prefix and postfix increment and decrement operators */

	      public class Increment {
                 public static void main(String [ ] args) {
                    int  x=5, y=5, a=3, b=3, j=7, k=7, result;
                    j++;  ++k;
                    System.out.println("j and k are " + j + " and " + k);
                    j--;   --k;
                    System.out.println("j and k are " + j + " and " + k);
                    result = 3 +  x++;
                    System.out.println("result and x are " + result + " and " + x);
                    result = 3 + ++y;
                    System.out.println("result and y are " + result + " and " + y);
                    result = 2 + a--; 
                    System.out.println("result and a are " + result + " and " + a);
                    result = 2 + --b;
                    System.out.println("result and b are " + result + " and " + b);
                  }
              }