testprimitivetransfer.java

疯狂Java讲义_源码(含Java设计模式CHM

/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */
public class TestPrimitiveTransfer
{
	public static void swap(int a , int b)
	{
		//下面三行代码实现a、b变量的值交换。
		//定义一个临时变量来保存a变量的值
		int tmp = a;
		//把b的值赋给a
		a = b;
		//把临时变量tmp的值赋给a
		b = tmp;
		System.out.println("swap方法里，a的值是" + a + "；b的值是" + b);
	}
	public static void main(String[] args) 
	{
		int a = 6;
		int b = 9;
		swap(a , b);
		System.out.println("交换结束后，实参a的值是" + a + "；实参b的值是" + b);
	}
}