用Socket打开JFrame的问题 [英] problem in opening JFrame with Socket

问题描述

以下是我的代码，当我让客户端发送一些数据时，它将显示给我，但是当我单击addd按钮时，它不会打开新的JFrame ...
任何人都可以解决我的问题吗.

Here following is my code and as i make a client send some data it will show me But as i click on addd button it will not open up a new JFrame...
Can any one solve my problem..

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


class Cli extends JFrame
{

ServerSocket ss;
Socket soc;
InputStream in;
OutputStream out;

DataInputStream sin;
DataOutputStream sout;

JLabel l1;
//JTextField txt1;
JButton addd;
Cli()  throws Exception
{
	Class.forName("com.mysql.jdbc.Driver");
	Connection cn=DriverManager.getConnection("jdbc:mysql://localhost:3306/nirav","root","root");
 	JPanel pan=new JPanel(new GridLayout(2,1));
	ss=new ServerSocket(8888);
 	//ss.setSOLimit(10000);
	l1=new JLabel("waiting for client");
	txt1=new JTextField(40);
	addd=new JButton("click here to send");
	
	soc=ss.accept();
 	in=soc.getInputStream();
 	out=soc.getOutputStream();
	sin=new DataInputStream(in);
	sout=new DataOutputStream(out);	
	String s="";
					
	try{
		s=sin.readUTF();
				
		}catch(Exception e)
		{
		}
		l1.setText("client :"+s);						
		addd.addActionListener(new ActionListener()
			{
				public void actionPerformed(ActionEvent	ae) 
				{	try{	
					l1.setText("waiting");
					Recieve c=new Recieve();
					c.setSize(300,300);	
					c.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
					c.setVisible(true);
			//This above is for opening new JFrame which is not working and also not throwing any error
					}catch(Exception e)
					{
					System.out.println(e.toString());
					}
				}					
			
			}); 
	pan.add(l1);
	pan.add(txt1);
	pan.add(addd);
	add(pan);
	
}
	

class Recieve extends JFrame
{
JLabel msg;
JTextField t1;
JButton a1;

Recieve() throws Exception
{	
	
		
	JPanel pan=new JPanel(new GridLayout(2,1));
	t1=new JTextField(40);
	a1=new JButton("click here to send");
	//msg=new JLabel("waiting...");
	 a1.addActionListener(new ActionListener()
			{
				public void actionPerformed(ActionEvent	ae)
				{	try{
					String s;
					
					String str="Server :";
					sout.writeUTF(t1.getText());
					//msg.setText(str);
					sout.flush();
					
					}catch(Exception e)
	{
	System.out.println(e.toString());
	}
				}					
					
				
	});
	
	pan.add(t1);
	pan.add(a1);
	add(pan);
	
							
			
		
		
}
}

	
}
class Server 
{
	

public static void main(String args[]) throws Exception
	{
	try{
		
	Cli c=new Cli();
	c.setSize(300,300);
	c.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	c.setVisible(true);
	}
	catch(Exception e)
	{
	System.out.println(e.toString());
	}
		
	


	}
}

推荐答案

那应该是什么?

What shall that be?

Class.forName("com.mysql.jdbc.Driver");

那要进口什么吗?它引发了未捕获的ClassNotFound异常.

将其注释掉，代码将起作用.

Shall that import something? It''s throwing an uncaptured ClassNotFound Exception.

Comment it out and the code will work.

这篇关于用Socket打开JFrame的问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！