port.java

java聊天室服务端

package S;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;



public class Port implements ActionListener
{
    JDialog dialog;
    JPanel panel1, panel2, panel3;
    JLabel label1;
	public static JLabel label2;
    static JTextField textField_port;
    JButton button_save, button_cancel;
	int portnumber;

	
    
    public void init(){
    	dialog = new JDialog();
    	dialog.setTitle("端口设置");
    	panel1 = new JPanel();
    	panel2 = new JPanel();
    	panel3 = new JPanel();
    	label1 = new JLabel("请输入侦听的端口号：");
    	textField_port = new JTextField("8888",10);
    	label2 = new JLabel("默认端口号为：8888");
    	button_save = new JButton("保存");
    	button_save.addActionListener(this);
    	button_cancel = new JButton("取消");
    	button_cancel.addActionListener(this);
    	
    	panel1.add(label1); 
    	panel1.add(textField_port);
    	panel3.add(label2);
    	panel2.add(button_save);
    	panel2.add(button_cancel);
    	
    	dialog.add(panel1,BorderLayout.NORTH);
    	dialog.add(panel3,BorderLayout.CENTER);
    	dialog.add(panel2,BorderLayout.SOUTH);

    	dialog.setSize(300, 120);
    	Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
    	dialog.setLocation((d.width - dialog.getWidth())/2
				,(d.height - dialog.getHeight())/2);
    	dialog.setVisible(true);
    	
    }

	public void actionPerformed(ActionEvent e)
	{
		Object obj = e.getSource();
		if(obj == button_save){
			portnumber = Integer.parseInt(Port.textField_port.getText());
			if(portnumber<1 || portnumber>65535){
				Port.label2.setText("侦听端口必须是0-65535之间的整数!");
				return;
			}
			TestChatServer.port = portnumber;
			dialog.dispose();
		}else if(obj == button_cancel){
			dialog.dispose();
		}
	}

	
    
}