swap.java

所学课程的编码。java的基础例子。可以练习java通过这些例子。

package chap03;

public class Swap {
	 public static void swap(Object a, Object b){
		  Object temp = a;
		  a = b;
		  b = temp;
		  
	 }
	 public static void main(String[] args) {
		  Integer x =new Integer("3");
		  Integer y =new Integer("5");
		  swap(x, y);
		  System.out.println ("x = "+x);
		  System.out.println ("y = "+y);
	 }
}