对对象排序算法的小尝试

今天一时心痒，想练习一下关于对象排序的方法，于是，就有了这篇博客，敬请欣赏：

package com.deepfounder.api.sort;

public class ObjectSort {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ObjectSort os=new ObjectSort();
		User us=new User();
		java.util.ArrayList<User> al= os.Sort(us.getUserList(300));
		for(int i=0;i<al.size();i++)
		{
			System.out.println(((User)(al.get(i))).getUserName());
		}
		

	}
	public java.util.ArrayList<User> Sort(java.util.ArrayList<User> al)
	{
		User Temp=new User();
		//Temp=new User();
		for(int i=0;i<al.size();i++)
		{
			for(int j=0;j<al.size();j++)
			{
				if(((User)(al.get(i))).getUserID()>((User)(al.get(j))).getUserID())
				{
					Temp=al.get(i);
					al.add(i, al.get(j));
					al.add(j,Temp);
					
					
				}
			}
		}
		return al;
	}

}

package com.deepfounder.api.sort;

public class User 
{
	private int UserID=0;
	public int getUserID() {
		return UserID;
	}
	public void setUserID(int userID) {
		UserID = userID;
	}
	public String getUserName() {
		return UserName;
	}
	public void setUserName(String userName) {
		UserName = userName;
	}
	private String UserName="";
	public static java.util.ArrayList<User> getUserList(int T_Index)
	{
		java.util.ArrayList<User> usl=new java.util.ArrayList<User>();
		for(int index=0;index<T_Index;index++)
		{
			User us=new User();
			us.setUserID((int)(java.lang.Math.random())*T_Index);
			us.setUserName("UserName:"+index);
			usl.add(us);
			//us.Free();
		}
		return usl;
	}
	public void Free()
	{
		this.UserName=null;
		
	}
	
}

Ok，Hello World！