afterregister.java

Java编写即时聊天工具, 拥有注册登陆群聊私聊等功能, 程序包含完整的Document和测试运行环境

package chat;

import java.io.*;
import javax.swing.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class AfterRegister extends JFrame implements ActionListener{
	public AfterRegister()throws IOException{
		super("飞腾");
		setSize(200,200);
		Container contentPane=getContentPane();
		contentPane.setLayout(new BorderLayout());
		
		JLabel label=new JLabel("                      注册成功!");
		contentPane.add(label,BorderLayout.NORTH);
		
		JPanel panel=new JPanel();
		panel.setLayout(new GridLayout(1,2));
		JButton atOnce_button=new JButton("立即登录");
		atOnce_button.addActionListener(this);
		panel.add(atOnce_button);
		JButton cancel_logbutton=new JButton("稍后登录");
		cancel_logbutton.addActionListener(this);
		panel.add(cancel_logbutton);
		contentPane.add(panel,BorderLayout.CENTER);
		
		
		Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
	    Dimension frameSize = this.getSize();
	    if (frameSize.height > screenSize.height) {
	      frameSize.height = screenSize.height;
	    }
	    if (frameSize.width > screenSize.width) {
	      frameSize.width = screenSize.width;
	    }
	    this.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);
	}
	public void actionPerformed(ActionEvent e){
		
		String actionCommand=e.getActionCommand();
		try{
			if(actionCommand.equals("立即登录")){
				Log atonceLog=new Log();
				atonceLog.setVisible(true);
				dispose();
			}
			else
				System.exit(0);
		}
		catch(IOException exc){
			exc.printStackTrace();
		}
	}
}