java初级问题，请教啊

[qiaopeizhan]

import java.awt.*;
import java.awt.event.*;
import java.io.IOException;
import java.net.*;
public class Chat {
Frame f=new Frame("我的聊天室");
TextField tfIP=new TextField(15);
List lst=new List(6);
DatagramSocket ds;
public Chat()
{
	try
	{
	ds=new DatagramSocket(3000);	
	}catch(Exception ex){ex.printStackTrace( );}
	new Thread(new Runnable()
	{
		public void run()
		{
			byte buf[]=new byte[1024];
			DatagramPacket dp=new DatagramPacket(buf,1024);
			while(true)
			{
				try
				{
					ds.receive(dp);
					lst.add(new String(buf,0,dp.getLength())+
							":from"+dp.getAddress().getHostAddress(),0);
				}catch(Exception e){e.printStackTrace();}
			}
		}
	}).start();
}
	public static void main(String[] args) {
Chat chat=new Chat();
chat.init();
	}
	public void init()
	{
		f.setSize(300,300);
		f.add(lst);
		
		Panel p=new Panel();
		p.setLayout(new BorderLayout());
		p.add("West",tfIP);
		TextField tfData=new TextField(20);
		p.add("East",tfData);
		f.add("South",p);
		
		f.setVisible(true);
		f.setResizable(false);
		
		f.addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				ds.close();
				f.setVisible(false);
				f.dispose();
				System.exit(0);
			}
		});
		tfData.addActionListener(new ActionListener()
		{
			public void actionPerformed(ActionEvent e)
			{
				byte[] buf;
				buf=e.getActionCommand().getBytes();
				DatagramPacket dp=new DatagramPacket(buf,buf.length,
						InetAddress.getByName(tfIP.getText()),3000);//问题出在这里啊！！！
				try
				{
					ds.send(dp);
				}catch(Exception ex){ex.printStackTrace( );}
				((TextField)e.getSource()).setText("");
			}
		}
		);
	}

}

[benbenyangdongxu]

太长了啊！！

[qiaopeizhan]

[Quote=引用 1 楼 benbenyangdongxu 的回复:]
太长了啊！！
[/Quote]
分不能给你！

[茫茫大海]

import java.awt.*;
import java.awt.event.*;
import java.io.IOException;
import java.net.*;
public class Chat {
Frame f=new Frame("我的聊天室");
TextField tfIP=new TextField(15);
List lst=new List(6);
DatagramSocket ds;
public Chat()
{
    try
    {
    ds=new DatagramSocket(3000);    
    }catch(Exception ex){ex.printStackTrace( );}
    new Thread(new Runnable()
    {
        public void run()
        {
            byte buf[]=new byte[1024];
            DatagramPacket dp=new DatagramPacket(buf,1024);
            while(true)
            {
                try
                {
                    ds.receive(dp);
                    lst.add(new String(buf,0,dp.getLength())+
                            ":from"+dp.getAddress().getHostAddress(),0);
                }catch(Exception e){e.printStackTrace();}
            }
        }
    }).start();
}
    public static void main(String[] args) {
Chat chat=new Chat();
chat.init();
    }
    public void init()
    {
        f.setSize(300,300);
        f.add(lst);
        
        Panel p=new Panel();
        p.setLayout(new BorderLayout());
        p.add("West",tfIP);
        TextField tfData=new TextField(20);
        p.add("East",tfData);
        f.add("South",p);
        
        f.setVisible(true);
        f.setResizable(false);
        
        f.addWindowListener(new WindowAdapter()
        {
            public void windowClosing(WindowEvent e)
            {
                ds.close();
                f.setVisible(false);
                f.dispose();
                System.exit(0);
            }
        });
        tfData.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                byte[] buf;
                buf=e.getActionCommand().getBytes();
                DatagramPacket dp;//处理异常就行了
				try {
					dp = new DatagramPacket(buf,buf.length,
					        InetAddress.getByName(tfIP.getText()),3000);
					ds.send(dp);
				} catch (UnknownHostException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				} catch(Exception ex){ex.printStackTrace( );}
                ((TextField)e.getSource()).setText("");
            }
        }
        );
    }

}

[cry615]

太长了，写的很乱啊，应该多看看java编程规范方面的书