client.java

J2EE之EJB,RMI多个源码

import javax.swing.*;
import java.awt.event.*;
import javax.naming.*;
import javax.rmi.*;

public class Client implements ActionListener
{
	JFrame frm;
	
	JPanel pan;
	JLabel labD,labR;
	JTextField txtD,txtR;
	JButton jbtD2R,jbtR2D;
    
	
	public Client()
	{
		
		frm=new JFrame("转换");
		pan=new JPanel();
		frm.getContentPane().add(pan);
		labD=new JLabel("美元:");
		labR=new JLabel("卢布:");
		txtD=new JTextField(10);
		txtR=new JTextField(10);
		pan.add(labD);
		pan.add(txtD);
		pan.add(labR);
		pan.add(txtR);
		jbtD2R=new JButton("D2R");
		jbtR2D=new JButton("R2D");
		pan.add(jbtD2R);
		pan.add(jbtR2D);
		jbtD2R.addActionListener(this);
		jbtR2D.addActionListener(this);
		frm.setSize(200,200);
		frm.setVisible(true);
	}
	public void actionPerformed(ActionEvent e)
	{
		CalRemote remote;
		try
		{
			Context c=new InitialContext();
			Object o=c.lookup("CalJNDI");
			CalHome home=(CalHome)PortableRemoteObject.narrow(o,CalHome.class);
			remote=home.create();
			Object obj=e.getSource();
			if (obj==jbtD2R)
			{
				double RsMoney=remote.dollarToRs(Double.parseDouble(txtD.getText()));
				txtR.setText(String.valueOf(RsMoney));
			}
			else
			{
				double DMoney=remote.rsToDollar(Double.parseDouble(txtR.getText()));
				txtD.setText(String.valueOf(DMoney));
			}
		}
		catch(Exception ex)
		{
			System.out.println(ex);
		}
	}
	public static void main(String args[])
	{
		new Client();
	}
}