logongui.java

java简易在线聊天程序

package chatDog;

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

public class LogonGUI implements Const {
	private String message=null;
	private String caption=null;
	private String userName=null;
	private String userPassword=null;
	
	JLabel userNamelbl=new JLabel("请输入你的用户名:");
	JLabel userPasswordlbl=new JLabel("    请输入你的密码:");
	JTextField userNamejtf=new JTextField(20);
	JPasswordField userPasswordjtf=new JPasswordField(20);
	JButton btnRegist=new JButton(BTN_REGISTCAP);
	JButton btnCancel=new JButton(BTN_CANCELCAP);
	JButton btnLogon=new JButton(BTN_LOGONCAP);
	JFrame lgf=new JFrame(caption);
	
	private class btnAction implements ActionListener{
		public void actionPerformed(ActionEvent e){
			if((e.getActionCommand()).equals(BTN_LOGONCAP)){
				userName=new String(userNamejtf.getText());
				userPassword=new String(userPasswordjtf.getText());
				message=new String(BTN_LOGONCAP);
			}
			else if((e.getActionCommand()).equals(BTN_CANCELCAP)){
				message=new String(BTN_CANCELCAP);
			}
			else{
				userName=new String(userNamejtf.getText());
				userPassword=new String(userPasswordjtf.getText());
				message=new String(BTN_REGISTCAP);
			}
		}
	}
	
	LogonGUI(String cap){
		caption=cap;
	}
	
	public void start(){
		lgf.setTitle(caption);
		lgf.setSize(400,200);
		lgf.setLocation(330,200);
		lgf.addWindowListener(new WindowAdapter(){
							  	public void windowClosing(WindowEvent e){
							  		message=BTN_CANCELCAP;
							  	}
							  });
		
		
		
		btnAction ba=new btnAction();
		btnRegist.addActionListener(ba);
		btnCancel.addActionListener(ba);
		btnLogon.addActionListener(ba);
		
		
		lgf.getContentPane().setLayout(new FlowLayout());
		lgf.getContentPane().add(userNamelbl);
		lgf.getContentPane().add(userNamejtf);
		lgf.getContentPane().add(userPasswordlbl);
		lgf.getContentPane().add(userPasswordjtf);
		lgf.getContentPane().add(btnRegist);
		lgf.getContentPane().add(btnCancel);
		lgf.getContentPane().add(btnLogon);
		
		
		lgf.setVisible(true);
	}
	public void hide(){
		lgf.setVisible(false);
	}
	public void reset(){
		message=null;
	}
	public String getMessage(){
		if(message==null) return null;
		return new String(message);
	}
	public String getName(){
		if(userName==null) return null;
		return new String(userName);
	}
	public String getPassword(){
		if(userPassword==null) return null;
		return new String(userPassword);
	}
	public JFrame getFrame(){
		return lgf;
	}
}