passtest.java

来自「java 教程相应的代码 全是自己写的内附注释 很容易看明白的」· Java 代码 · 共 43 行

package demo.chapter06.others;

import demo.chapter02.MyDate;

/**
 * 参数传递测试
 * 
 * @author Frank
 */
public class PassTest {

	public static void changeInt(int value) {
		value = 55;
	}

	public static void changeObjectRef(MyDate ref) {
		ref = new MyDate(2008, 8, 8);
	}

	public static void changeObjectAttr(MyDate ref) {
		ref.setDay(4);
	}

	public static void main(String[] args) {
		MyDate date;
		int val;
		
		val = 11;
		changeInt(val);
		System.out.println("Int value is:" + val);
		
		date = new MyDate(1997, 7, 1);
		changeObjectRef(date);
		System.out.println("MyDate:" + date);
		
		changeObjectAttr(date);
		System.out.println("MyDate:" + date);
		
		/* 顺便说明 final 参数 */
	}

}