gerbil.java

半年的java基础联系源码！现在看了破！对于初学java的朋友能帮上忙就用吧

import java.util.*;
class Gerbil
{
	int gerbilNumber;
	Gerbil(int tt)
	{
		gerbilNumber=tt;
	}
	public void hop()
	{
		System.out.println(gerbilNumber);
	}
}
class GerbilTest
{
	public static void main(String [] args)
	{
		List at=new ArrayList();
		at.add(new Gerbil(10));
		at.add(new Gerbil(20));
		at.add(new Gerbil(30));
		Iterator it=at.iterator();
		while(it.hasNext())
		{
			((Gerbil)it.next()).hop();
	        }
		/*for(int i=0;i<at.size();i++)
		      ((Gerbil)at.get(i)).hop();*/
	}
}