CMD ie ChatServer & chat client

i do have a Chat application which is quite good in all terms.
According to the project

1)Start the server using CMD ie ChatServer.java

2)Run the ChatClient with this command --javac ChatClient TOM

3)again open a new CMD repeat the above step 3 with different name
say Sam
Code example :
java code

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import java.rmi.*;
import java.util.*;
import java.rmi.server.*;

public class ChatClient extends JFrame implements ChatClientInterface,ActionListener
{
	CenterPanel centerPanel;
	EastPanel eastPanel;
	SouthPanel southPanel;
	Container  contentPane;
	String clientName;
	//String refIdentity="rmi://localhost:1099/Anoop";
	String refIdentity;
	ChatServerInterface serverRef;
	Hashtable hs;

	public ChatClient(final String clientName)
	{
		super("Chat Client "+clientName);
		this.clientName=clientName;
		refIdentity="serverstub";
		hs=new Hashtable();
		contentPane=getContentPane();
		centerPanel=new CenterPanel();
		eastPanel=new EastPanel();
		southPanel=new SouthPanel();
		
		contentPane.add(centerPanel,BorderLayout.CENTER);
		contentPane.add(eastPanel,BorderLayout.EAST);
		contentPane.add(southPanel,BorderLayout.SOUTH);
		
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		southPanel.sendBtn.addActionListener(this);
		southPanel.textField.addActionListener(this);

		addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				try
				{
					serverRef.logout(clientName);
				}
				catch (Exception exception)
				{
					System.out.println(exception);
				}
			}
		});

		eastPanel.list.addMouseListener(new MouseAdapter()
		{
			public void mouseClicked(MouseEvent evt)
			{
				if (evt.getClickCount()==2)
				{
					String hisName=(String)eastPanel.list.getSelectedValue();
					MiniWindow mw=(MiniWindow)hs.get(hisName);
					if (mw==null)
					{
						try
						{
							ChatClientInterface hisRef=serverRef.giveRef(hisName);
							mw=new MiniWindow(hisName,hisRef);
							hs.put(hisName,mw);
						}
						catch (Exception e)
						{
							System.out.println(e);
						}
					}
					eastPanel.list.clearSelection();
					southPanel.textField.requestFocus();
				}
			}
		});
		pack();
		setVisible(true);
		setResizable(false);
		try
		{
			//ChatServerInterface 
			serverRef=(ChatServerInterface)Naming.lookup(refIdentity);
			UnicastRemoteObject.exportObject(this);
			serverRef.login(clientName,this);
		}
		catch (Exception e)
		{
			System.out.println(e);
		}
	}

	public void pm(final String hisName,final ChatClientInterface hisRef,final String hisMsg)
	{
		MiniWindow mw=(MiniWindow)hs.get(hisName);
		if (mw==null)
		{
			mw=new MiniWindow(hisName,hisRef);
			hs.put(hisName,mw);
		}
		mw.p1.ta.append(hisMsg+"\n");
	}

	public void actionPerformed(ActionEvent e)
	{
		String clientMsg=southPanel.textField.getText();
		clientMsg=clientName+" : "+clientMsg;
		try
		{
			serverRef.takeMsg(clientMsg);
		}
		catch (Exception exception)
		{
			System.out.println(exception);
		}
		southPanel.textField.setText("");
	}

	public void takeMsg(String serverMsg)
	{
		centerPanel.textArea.append(serverMsg+"\n");
	}

	public void takeClientList(Vector clientNames)
	{
		eastPanel.listModel.removeAllElements();
		Enumeration en=clientNames.elements();
		while (en.hasMoreElements())
		{
			String clientName=(String)en.nextElement();
			eastPanel.listModel.addElement(clientName);
		}
	}

	class MiniWindow extends JFrame implements ActionListener
	{
		Panel1 p1;
		Panel2 p2;
		String hisName;
		ChatClientInterface hisRef;
		
		public MiniWindow(final String hisName,final ChatClientInterface hisRef)
		{
			super("From "+clientName+ " to "+hisName);
			this.hisName=hisName;
			this.hisRef=hisRef;
			p1=new Panel1();
			p2=new Panel2();
			add(p1,BorderLayout.CENTER);
			add(p2,BorderLayout.SOUTH);
			addWindowListener(new WindowAdapter()
			{
				public void windowClosing(WindowEvent e)
				{
					hs.remove(hisName);
				}
			});
			p2.t.addActionListener(this);
			p2.b.addActionListener(this);
			setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
			pack();
			setVisible(true);
			setResizable(false);
			p2.t.requestFocus();
		}

		public void actionPerformed(ActionEvent evt)
		{
			String msg=p2.t.getText();
			msg=clientName + ":" +msg;
			try
			{
				hisRef.pm(clientName,ChatClient.this,msg);
			}
			catch (Exception e)
			{
				System.out.println(e);
			}
			p1.ta.append(msg+"\n");
			p2.t.setText("");
		}

		class Panel1 extends JPanel
		{
			JTextArea ta;
			JScrollPane sp;
			public Panel1()
			{
				ta=new JTextArea(10,20);
				add(sp=new JScrollPane(ta));
				ta.setEditable(false);
				ta.setBackground(Color.lightGray);
				Border raisedbevel=BorderFactory.createRaisedBevelBorder();
				TitledBorder title=BorderFactory.createTitledBorder(raisedbevel,"View Massages");
				title.setTitleJustification(TitledBorder.CENTER);
				ta.setBorder(title);
			}
		};

		class Panel2 extends JPanel
		{
			JTextField t;
			JButton b;

			public Panel2()
			{
				add(t=new JTextField(10));
				Border backline=BorderFactory.createLineBorder(Color.black);
				TitledBorder title=BorderFactory.createTitledBorder(backline,"Enter Massage");
				title.setTitleJustification(TitledBorder.CENTER);
				t.setBorder(title);
				add(b=new JButton("SEND"));		
			}
		};
	};

		public static void main(String args[])
		{
			try
			{
				UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
			}
			catch (Exception e)
			{
				System.out.println(e);
			}
			new ChatClient(args[0]);

		}
};

		class CenterPanel extends JPanel
		{
			JTextArea textArea;
			JScrollPane scrollpane;

			public CenterPanel()
			{
				textArea=new JTextArea(20,35);
				add(scrollpane=new JScrollPane(textArea));
				textArea.setEditable(false);
				textArea.setOpaque(true);
				textArea.setBackground(Color.lightGray);
				Border raisedbevel=BorderFactory.createRaisedBevelBorder();
				TitledBorder title=BorderFactory.createTitledBorder(raisedbevel,"View Massages");
				title.setTitleJustification(TitledBorder.CENTER);
				textArea.setBorder(title);
			}
		};

		class EastPanel extends JPanel
		{
			JList list;
			JScrollPane scrollpane;
			DefaultListModel listModel;
			public EastPanel()
			{
				listModel=new DefaultListModel();
				list=new JList(listModel);
				add(scrollpane= new JScrollPane(list));
				list.setVisibleRowCount(20);
				list.setBackground(Color.lightGray);
				Border raisedbevel=BorderFactory.createRaisedBevelBorder();
				TitledBorder title=BorderFactory.createTitledBorder(raisedbevel,"View Clients");
				title.setTitleJustification(TitledBorder.CENTER);
				list.setBorder(title);
				list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
			}
		};

		class SouthPanel extends JPanel
		{
			JTextField textField;
			JButton sendBtn;

			public SouthPanel()
			{
				add(textField=new JTextField(30));
				Border blackline=BorderFactory.createLineBorder(Color.black);
				TitledBorder title=BorderFactory.createTitledBorder(blackline,"Enter Message");
				title.setTitleJustification(TitledBorder.CENTER);
				textField.setBorder(title);
				add(sendBtn=new JButton("Send Message"));
				setSize(40,100);
			}

		};

now with a single machine iam able to chat with TOM and Sam


But my Question is suppose this iam deploying in actual LAN

1)What Changes should i make and how ?


2)How will machine number 1 will access the server and then to the right Machine number


iam a beginner in java so pls do help.
i am attaching the program also.

thank u
[email protected]

finished-projects/java-chat-t644.html
this code will help you so much

updated.