与socket = serverSocket.accept();同一个class下引用其他gui类总是显示白屏

Question

目的是做一个三子棋游戏。
主类是gui.TTT
listener2.java是用来建立服务器，里面引用了一个mythread.java，mythread会循环运行，主类中有一个static int thread_temp=1，当其值为2时，mythread会进行：netgame ng = new netgame();ng.gamestart();这个操作就是创建游戏窗口
在listener2.java中有这么两句话：
socket = serverSocket.accept();
 Gui_TTT.thread_temp=2;
连接成功后应该就可以建立窗口了，但是出来的窗口总是一片空白，下面是正常窗口的空白窗口的图片：

Answer 1

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package gui_ttt;
import java.io.*;
import java.net.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
/**
 *
 * @author Administrator
 */
public class Gui_TTT extends JPanel implements ActionListener{
    static ImageIcon bg = new ImageIcon("1.jpg");
    Image im=Toolkit.getDefaultToolkit().getImage("1.jpg"); 
    static int thread_temp=1;
    public void paintComponent(Graphics g) {   g.drawImage(im, 0, 0, null);   }    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        mythread th1 = new mythread();
        th1.start();
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setBounds(0, 0, bg.getIconWidth(), bg.getIconHeight());
        Gui_TTT jp = new Gui_TTT();
        f.add(jp);
        jp.setLayout(null);
        ImageIcon icon1 = new ImageIcon("offline2.png");
        ImageIcon icon2 = new ImageIcon("online2.png");
        ImageIcon icon1x = new ImageIcon("offline3.png");
        ImageIcon icon2x = new ImageIcon("online3.png");
        JButton offline = new JButton(icon1);
        JButton online = new JButton(icon2);
        offline.setPressedIcon(icon1x);
        online.setPressedIcon(icon2x);
        offline.setBorderPainted(false);
        offline.setContentAreaFilled(false);
        online.setBorderPainted(false);
        online.setContentAreaFilled(false);
        jp.add(offline);
        offline.setBounds(50, 200, 211, 82);
        jp.add(online);
        online.setBounds(539, 200, 211, 82);
        offline.addActionListener(new listener1());
        online.addActionListener(new pk());        f.setTitle("井字棋");
        f.setResizable(false);
        f.setVisible(true);
    }    @Override
    public void actionPerformed(ActionEvent e) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
    
}

Answer 2

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package gui_ttt;
//服务器后手
import static gui_ttt.pk.getmyip;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import javax.swing.JPanel;
import java.net.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.io.*;
/**
 *
 * @author Administrator
 */
public class listener2  implements ActionListener {
    public void actionPerformed(ActionEvent event){
        try {
            connect();
            
            
        } catch (Exception ex) {
            Logger.getLogger(listener2.class.getName()).log(Level.SEVERE, null, ex);
        }
            }
public void connect()throws Exception{
    
       Socket socket = null;
       String portstr = pk.myport.getText();
       InetAddress ip = InetAddress.getByName("localhost");
       int port =Integer.parseInt(portstr);   
       ServerSocket serverSocket  = new ServerSocket(port,1,InetAddress.getLocalHost());
       String strSocket, strLocal; 
      
    
   socket = serverSocket.accept();
   Gui_TTT.thread_temp=2;
   while(true){  
      
      
      BufferedReader brInFromUser = new BufferedReader(new InputStreamReader(System.in)); 
      BufferedReader brInFromClient = new BufferedReader(new InputStreamReader(socket.getInputStream())); 
      DataOutputStream  dosOutToClient = new DataOutputStream(socket.getOutputStream());
      do{
          
          strSocket = brInFromClient.readLine(); 
          System.out.println("Client: " + strSocket);//打印客户端发来的信息
         strLocal = brInFromUser.readLine(); 
          dosOutToClient.writeBytes(strLocal + '\n'); //传出服务器发出的信息
        } while(!strSocket.equals("bye"));
        socket.close();
       break;
     }   
    
    }
}

Answer 3

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package gui_ttt;import static gui_ttt.Gui_TTT.bg;
import java.io.*;
import java.net.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
 *
 * @author Administrator
 */
public class netgame extends JPanel{
    static int x=3;//奇数表示1号，偶数表示2号
    static int i=0,j=0;
    static ImageIcon bg = new ImageIcon("2.jpg");
    static Image im=Toolkit.getDefaultToolkit().getImage("2.jpg"); 
    public void paintComponent(Graphics g) {   g.drawImage(im, 0, 0, null);   }
    static void change(int i,int j){
         if(x%2!=0){
         judge.t[i][j]=1;
         }
         else {
         judge.t[i][j]=2;
         }
         
     }
    static public void gamestart() {                               
        JFrame f = new JFrame();                                                  
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
        f.setBounds(0, 0, bg.getIconWidth(), bg.getIconHeight()+30); 
        netgame jp = new netgame(); 
        f.add(jp); 
        jp.setLayout(null); 
        ImageIcon icon3 = new ImageIcon("x.jpg"); 
        ImageIcon icon4 = new ImageIcon("o.jpg"); 
        JButton []xxx = new JButton[99]; 
        JButton []ooo = new JButton[99]; 
        for(int k=0;k<99;k=k+1){
        xxx[k]=new JButton(icon3);
        ooo[k]=new JButton(icon4);
        xxx[k].setBorderPainted(false);
        xxx[k].setContentAreaFilled(false);
        ooo[k].setBorderPainted(false);
        ooo[k].setContentAreaFilled(false);
        }
        judge jd = new judge();
        jp.addMouseListener(new MouseAdapter(){
            public void mousePressed(MouseEvent event){
                
                
                int x1 = event.getX();
                int y1 = event.getY();
                if(x1>=0&&x1<=193&&y1>=0&&y1<=193){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(50, 50, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(50, 50, 100, 100);
                }
                change(0,0);
                i=i+1;x=x+1;
                }
                if(x1>=202&&x1<=397&&y1>=0&&y1<=193){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(252, 50, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(252, 50, 100, 100);
                }
                change(0,1);
                i=i+1;x=x+1;
                }
                if(x1>=406&&x1<=600&&y1>=0&&y1<=193){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(456, 50, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(456, 50, 100, 100);
                }
                change(0,2);
                i=i+1;x=x+1;
                }
                
                
                if(x1>=0&&x1<=193&&y1>=203&&y1<=397){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(50, 253, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(50, 253, 100, 100);
                }
                change(1,0);
                i=i+1;x=x+1;
                }
                 if(x1>=202&&x1<=397&&y1>=203&&y1<=397){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(252, 253, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(252, 253, 100, 100);
                }
                change(1,1);
                i=i+1;x=x+1;
                }
                if(x1>=406&&x1<=600&&y1>=203&&y1<=397){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(456, 253, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(456, 253, 100, 100);
                }
                change(1,2);
                i=i+1;x=x+1;
                }
                
                if(x1>=0&&x1<=193&&y1>=406&&y1<=600){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(50, 456, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(50, 456, 100, 100);
                }
                change(2,0);
                i=i+1;x=x+1;
                }
                if(x1>=202&&x1<=397&&y1>=406&&y1<=600){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(252, 456, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(252, 456, 100, 100);
                }
                change(2,1);
                i=i+1;x=x+1;
                }
                if(x1>=406&&x1<=600&&y1>=406&&y1<=600){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(456, 456, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(456, 456, 100, 100);
                }
                change(2,2);
                i=i+1;x=x+1;
                }
                if(x==12&&jd.judge()==false){
                JFrame tempjf = new JFrame();
                tempjf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                JPanel tempjp = new JPanel();
                tempjf.add(tempjp);
                tempjp.setLayout(null);
                ImageIcon iconwin = new ImageIcon("pj.png");
                JButton win = new JButton(iconwin);
                win.setBorderPainted(false);
                win.setContentAreaFilled(false);
                tempjp.add(win);
                win.setBounds(0, 0, 100, 100);
                tempjf.setSize(100, 150);
                tempjf.setResizable(false);
                tempjf.setVisible(true);
            
            }
                if(jd.judge()==true){
                if(x%2==0){
                JFrame tempjf = new JFrame();
                tempjf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                JPanel tempjp = new JPanel();
                tempjf.add(tempjp);
                tempjp.setLayout(null);
                ImageIcon iconwin = new ImageIcon("x2.png");
                JButton win = new JButton(iconwin);
                win.setBorderPainted(false);
                win.setContentAreaFilled(false);
                tempjp.add(win);
                win.setBounds(0, 0, 100, 100);
                tempjf.setSize(100, 150);
                tempjf.setResizable(false);
                tempjf.setVisible(true);
                }
                else {
                JFrame tempjf = new JFrame();
                tempjf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                JPanel tempjp = new JPanel();
                tempjf.add(tempjp);
                tempjp.setLayout(null);
                ImageIcon iconwin = new ImageIcon("o2.png");
                JButton win = new JButton(iconwin);
                win.setBorderPainted(false);
                win.setContentAreaFilled(false);
                tempjp.add(win);
                win.setBounds(0, 0, 100, 100);
                tempjf.setSize(100, 150);
                tempjf.setResizable(false);
                tempjf.setVisible(true);
                }
                }
                //////////////////////////////////////////////////////////////////
            }
            
        }
        );
        //f.setResizable(false);
        f.setVisible(true);
    }
    public void run(){
        gamestart();
    }
      public static void main(String[] args) {
          netgame ng = new netgame();
          ng.run();
          
      }
    }

Answer 4

主类增加了两个函数：
static public void gamestart() {                               
        JFrame f2 = new JFrame();                                                  
        f2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
        f2.setBounds(0, 0, bg.getIconWidth(), bg.getIconHeight()+30); 
        netgame jp = new netgame(); 
        f2.add(jp); 
        jp.setLayout(null); 
        ImageIcon icon3 = new ImageIcon("x.jpg"); 
        ImageIcon icon4 = new ImageIcon("o.jpg"); 
        JButton []xxx = new JButton[99]; 
        JButton []ooo = new JButton[99]; 
        for(int k=0;k<99;k=k+1){
        xxx[k]=new JButton(icon3);
        ooo[k]=new JButton(icon4);
        xxx[k].setBorderPainted(false);
        xxx[k].setContentAreaFilled(false);
        ooo[k].setBorderPainted(false);
        ooo[k].setContentAreaFilled(false);
        }
        judge jd = new judge();
        jp.addMouseListener(new MouseAdapter(){
            public void mousePressed(MouseEvent event){
                
                
                int x1 = event.getX();
                int y1 = event.getY();
                if(x1>=0&&x1<=193&&y1>=0&&y1<=193){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(50, 50, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(50, 50, 100, 100);
                }
                change(0,0);
                i=i+1;x=x+1;
                }
                if(x1>=202&&x1<=397&&y1>=0&&y1<=193){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(252, 50, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(252, 50, 100, 100);
                }
                change(0,1);
                i=i+1;x=x+1;
                }
                if(x1>=406&&x1<=600&&y1>=0&&y1<=193){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(456, 50, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(456, 50, 100, 100);
                }
                change(0,2);
                i=i+1;x=x+1;
                }
                
                
                if(x1>=0&&x1<=193&&y1>=203&&y1<=397){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(50, 253, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(50, 253, 100, 100);
                }
                change(1,0);
                i=i+1;x=x+1;
                }
                 if(x1>=202&&x1<=397&&y1>=203&&y1<=397){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(252, 253, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(252, 253, 100, 100);
                }
                change(1,1);
                i=i+1;x=x+1;
                }
                if(x1>=406&&x1<=600&&y1>=203&&y1<=397){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(456, 253, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(456, 253, 100, 100);
                }
                change(1,2);
                i=i+1;x=x+1;
                }
                
                if(x1>=0&&x1<=193&&y1>=406&&y1<=600){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(50, 456, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(50, 456, 100, 100);
                }
                change(2,0);
                i=i+1;x=x+1;
                }
                if(x1>=202&&x1<=397&&y1>=406&&y1<=600){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(252, 456, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(252, 456, 100, 100);
                }
                change(2,1);
                i=i+1;x=x+1;
                }
                if(x1>=406&&x1<=600&&y1>=406&&y1<=600){
                if(x%2!=0)
                {jp.add(xxx[i]);
                xxx[i].setBounds(456, 456, 100, 100);}
                else{
                jp.add(ooo[i]);
                ooo[i].setBounds(456, 456, 100, 100);
                }
                change(2,2);
                i=i+1;x=x+1;
                }
                if(x==12&&jd.judge()==false){
                JFrame tempjf = new JFrame();
                tempjf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                JPanel tempjp = new JPanel();
                tempjf.add(tempjp);
                tempjp.setLayout(null);
                ImageIcon iconwin = new ImageIcon("pj.png");
                JButton win = new JButton(iconwin);
                win.setBorderPainted(false);
                win.setContentAreaFilled(false);
                tempjp.add(win);
                win.setBounds(0, 0, 100, 100);
                tempjf.setSize(100, 150);
                tempjf.setResizable(false);
                tempjf.setVisible(true);
            
            }
                if(jd.judge()==true){
                if(x%2==0){
                JFrame tempjf = new JFrame();
                tempjf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                JPanel tempjp = new JPanel();
                tempjf.add(tempjp);
                tempjp.setLayout(null);
                ImageIcon iconwin = new ImageIcon("x2.png");
                JButton win = new JButton(iconwin);
                win.setBorderPainted(false);
                win.setContentAreaFilled(false);
                tempjp.add(win);
                win.setBounds(0, 0, 100, 100);
                tempjf.setSize(100, 150);
                tempjf.setResizable(false);
                tempjf.setVisible(true);
                }
                else {
                JFrame tempjf = new JFrame();
                tempjf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                JPanel tempjp = new JPanel();
                tempjf.add(tempjp);
                tempjp.setLayout(null);
                ImageIcon iconwin = new ImageIcon("o2.png");
                JButton win = new JButton(iconwin);
                win.setBorderPainted(false);
                win.setContentAreaFilled(false);
                tempjp.add(win);
                win.setBounds(0, 0, 100, 100);
                tempjf.setSize(100, 150);
                tempjf.setResizable(false);
                tempjf.setVisible(true);
                }
                }
                //////////////////////////////////////////////////////////////////
            }
            
        }
        );
        //f2.setResizable(false);
        f2.setVisible(false);
    }
     static void change(int i,int j){
         if(x%2!=0){
         judge.t[i][j]=1;
         }
         else {
         judge.t[i][j]=2;
         }
         
     }
mythread中改成：if(Gui_TTT.thread_temp==2)
        {
            System.out.println("OK!!!");
            Gui_TTT.f2.setVisible(true);
            break;}
但是仍然白屏..

Answer 5

主类中加了一句static JFrame f2 = new JFrame();  
这样算是在主类中创建窗口吗？然而还是白屏..

Answer 6

调用paint刷新界面

Answer 7

能说具体一点吗，我在mythread中加了一句Gui_TTT.f2.repaint(); 然而仍然白屏..

Answer 8

能说具体一点吗，我在mythread中加了一句Gui_TTT.f2.repaint(); 然而仍然白屏..http://zhidao.baidu.com/link?url=m7b7p6CPRKgKPrnPDB8EO3q6MNEHmf_q5ODZcyqDZnP73t-C7DiqH2n4XzvHhHG6q3trjiZQRCTN3-9VLWRVV_

Answer 9

能说具体一点吗，我在mythread中加了一句Gui_TTT.f2.repaint(); 然而仍然白屏..http://zhidao.baidu.com/link?url=m7b7p6CPRKgKPrnPDB8EO3q6MNEHmf_q5ODZcyqDZnP73t-C7DiqH2n4XzvHhHG6q3trjiZQRCTN3-9VLWRVV_
mythread里面又改为了：Gui_TTT.gamestart();
            Gui_TTT.f2.repaint();
            Gui_TTT.f2.validate();
但还是白屏。。

Answer 10

能说具体一点吗，我在mythread中加了一句Gui_TTT.f2.repaint(); 然而仍然白屏..http://zhidao.baidu.com/link?url=m7b7p6CPRKgKPrnPDB8EO3q6MNEHmf_q5ODZcyqDZnP73t-C7DiqH2n4XzvHhHG6q3trjiZQRCTN3-9VLWRVV_
mythread里面又改为了：Gui_TTT.gamestart();
            Gui_TTT.f2.repaint();
            Gui_TTT.f2.validate();
但还是白屏。。看下图片是否已经载入

Answer 11

能说具体一点吗，我在mythread中加了一句Gui_TTT.f2.repaint(); 然而仍然白屏..http://zhidao.baidu.com/link?url=m7b7p6CPRKgKPrnPDB8EO3q6MNEHmf_q5ODZcyqDZnP73t-C7DiqH2n4XzvHhHG6q3trjiZQRCTN3-9VLWRVV_
mythread里面又改为了：Gui_TTT.gamestart();
            Gui_TTT.f2.repaint();
            Gui_TTT.f2.validate();
但还是白屏。。看下图片是否已经载入
没有，如果载入了背景会是背景图片

Answer 12

能说具体一点吗，我在mythread中加了一句Gui_TTT.f2.repaint(); 然而仍然白屏..http://zhidao.baidu.com/link?url=m7b7p6CPRKgKPrnPDB8EO3q6MNEHmf_q5ODZcyqDZnP73t-C7DiqH2n4XzvHhHG6q3trjiZQRCTN3-9VLWRVV_
mythread里面又改为了：Gui_TTT.gamestart();
            Gui_TTT.f2.repaint();
            Gui_TTT.f2.validate();
但还是白屏。。看下图片是否已经载入
没有，如果载入了背景会是背景图片我也无法定位错误，不过一般情况就是窗口要放在能够接收消息或事件的线程，二是要刷新