msgdialog.java

windows系统下用java开发的网络入侵检测程序

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
/**
 * Prompt some message to user.<p>
 * 2005.9.4
 * @version 0.1.2
 * @author Daxin Tian 
 *
 */
public class MsgDialog extends Frame implements ActionListener{
	
	/**
	 * Button OK.  If Clicked this dialog will be closed. 
	 */
    JButton b_ok;
    /**
     * The prompt message will be writed in it.
     */
    JLabel l_msg;
    
    
    MsgDialog()
    {
    	super("JIDX");
    	setBounds(300,100,300,200);
       	setLayout(new GridLayout(2,1));
    	    	
    	b_ok=new JButton("OK");
    	JPanel p1;
    	p1=new JPanel();
    	JLabel l1=new JLabel();
    	JLabel l2=new JLabel();
    	JPanel p2=new JPanel();
    	p2.setBackground(Color.lightGray);
    	p2.setLayout(new GridLayout(1,3));
    	JLabel l3=new JLabel();
    	JLabel l4=new JLabel();
    	p2.add(l3);
    	p2.add(b_ok);
    	p2.add(l4);
    	p1.setLayout(new GridLayout(3,1));
    	p1.add(l1);
    	p1.add(p2);
    	p1.add(l2);
    	
    	
    	
    	l_msg=new JLabel("",JLabel.CENTER);
    	
    
    	
    	add(l_msg);
    	add(p1);
    	
    	b_ok.addActionListener(this);
    	
    	setVisible(false);
    	
    	addWindowListener(new WindowAdapter()
    			  {public void windowClosing(WindowEvent e)
    			  	{setVisible(false);}
    			  }
    			);
    	
    }
    /**
	 * 
	 * @param s The prompt message.
	 */
    public void show(String s)
    {
    	l_msg.setText(s);
    	
    	setVisible(true);
    }
    /**
     * Listen to button OK's action.
     */
    public void actionPerformed(ActionEvent e)
    {
    	if(e.getSource()==b_ok)
    	{
    		
    		setVisible(false);
    	}
    	
    }
}