array.java

一个简单的局域网网聊天程序 用Eclipse编写 数据库为SQL Server2

package com.xj.bean;

import java.util.ArrayList;

public class array {
	ArrayList arr = new ArrayList();
	public array(ArrayList arr)
	{
		this.arr=arr;
	}
	
	public boolean checkArr(String name)
	{
		if(arr!=null)
		{
			if(arr.contains(name))
			{
				return false;
			}
			else
				return true;
		}
		else
			return true;

	}	
	public ArrayList getArrayList(String name){
		if(arr!=null)
		{
			arr.add(name);
		}
		else
		{
			arr=new ArrayList();
			arr.add(name);
		}
		return arr;
	}
	public ArrayList removeAyyayList(String name){
		arr.remove(name);
		return arr;
	}
}