Java 包 package 关键字

http://www.verejava.com/?id=16992895490365

//包其实就是 文件夹  以 . 号隔开
package pack1;

import pack2.Wallet; //引用包 pack2 下面的 Wallet 类

public class Person
{

	public Person()
	{
		Wallet w=new Wallet();
		System.out.println(w.getMoney());
	}

	public static void main(String[] args)
	{
		new Person();
	}
}



package pack2

public class Wallet
{
	private double money;

	public void setMoney(double money)
	{
		this.money=money;
	}

	public double getMoney()
	{

		return this.money;
	}
}

http://www.verejava.com/?id=16992895490365