我正在使用套接字通过 LAN 为两名玩家制作 Connect 4 游戏。当服务器玩家（玩家一）做出选择时，他看不到自己的选择，只有其他玩家看到。当其他玩家做出选择时，玩家 1 会看到他自己的第一个选择和用户的第一个选择。本质上，玩家直到下一轮才能看到他当前的选择。当我用 System.out.println 替换 setIcon 部分时，它会打印表示已到达代码的行。
为什么会这样，我该如何解决？如果我取出代码“yourWait();”，它似乎可以工作，但用户不会阅读其他玩家的选择。感谢您的任何帮助！
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.net.*;
import javax.swing.*;
public class GameBoard extends JPanel implements ActionListener
{
JLabel title;
boolean isHost;
public Button[] columnpieces = new Button[7];
int piecesInColumn[] = {0,0,0,0,0,0,0};
JLabel[][] pieces = new JLabel[7][6];
int colorOfPiece = 0;
final JLabel GRID = new JLabel(new ImageIcon("GRID.gif"));
final ImageIcon RED = new ImageIcon("RED.jpg");
final ImageIcon BLACK = new ImageIcon("BLACK.jpg");
JPanel one, two;
ServerSocket serverSocket = null;
Socket clientSocket = null;
BufferedReader reader;
PrintWriter writer;
public GameBoard()
{
super();
setBounds(0,0,1000, 700);
setBackground(Color.yellow);
setLayout(null);
title = new JLabel("Connect 4");
title.setBounds(0,5, 1000, 90);
title.setFont(new Font("Georgia", Font.BOLD, 100));
title.setForeground(Color.blue);
title.setHorizontalAlignment(JLabel.CENTER);
add(title);
GRID.setBounds(200, 150, 600, 500);
add(GRID);
for (int a = 0; a < columnpieces.length; a ++)
{
columnpieces[a] = new Button("Place");
columnpieces[a].addActionListener(this);
columnpieces[a].setBounds(209 + 84 * a, 100, 70, 50);
columnpieces[a].setBackground(Color.white);
columnpieces[a].setFont(new Font("Arial", Font.BOLD, 20));
add(columnpieces[a]);
for (int b = 0; b < pieces[0].length; b ++)
{
pieces[a][b] = new JLabel();
pieces[a][b].setBounds(208 + 83 * a,555 - 77 *b, 75,75);
add(pieces[a][b]);
}
}
}
public void setHost(String name) throws IOException
{
isHost = true;
try {
System.out.println(InetAddress.getLocalHost().getHostAddress());
} catch (UnknownHostException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
try {
serverSocket=new ServerSocket(706);
} catch (IOException e1) {
e1.printStackTrace();
}
Socket clientSocket = null;
try {
clientSocket = serverSocket.accept();
} catch (IOException e1) {
System.err.println("Accept failed.");
System.exit(1);
}
try {
writer=new PrintWriter(clientSocket.getOutputStream(),true);
} catch (IOException e1) {
e1.printStackTrace();
}
try {
reader=new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
} catch (IOException e1) {
e1.printStackTrace();
}
yourTurn();
}
public void setClient(String name) throws IOException
{
isHost = false;
try {
clientSocket=new Socket(JOptionPane.showInputDialog("Enter host address.", "192.168.1.137"),706);
writer=new PrintWriter(clientSocket.getOutputStream(),true);
reader=new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
} catch (UnknownHostException e) {
System.err.println("Don't know about host.");
System.exit(1);
} catch (IOException e) {
System.err.println("Couldn't get I/O for the connection");
System.exit(1);
}
yourWait();
}
@Override
public void actionPerformed(ActionEvent e)
{
if (e.getSource() == columnpieces[0])
updateFromClick(0);
if (e.getSource() == columnpieces[1])
updateFromClick(1);
if (e.getSource() == columnpieces[2])
updateFromClick(2);
if (e.getSource() == columnpieces[3])
updateFromClick(3);
if (e.getSource() == columnpieces[4])
updateFromClick(4);
if (e.getSource() == columnpieces[5])
updateFromClick(5);
if (e.getSource() == columnpieces[6])
updateFromClick(6);
}
void setButtonEnables(boolean enabled)
{
for (int a = 0; a < columnpieces.length; a ++)
{
if(piecesInColumn[a] == 6 || !enabled)
columnpieces[a].setEnabled(false);
else
columnpieces[a].setEnabled(true);
}
}
private void addPiece(int column)
{
int b = piecesInColumn[column];
if(colorOfPiece % 2 == 0)
pieces[column][b].setIcon(BLACK);
else if (colorOfPiece % 2 == 1)
pieces[column][b].setIcon(RED);
}
private void updateFromClick(int column)
{
addPiece(column);
colorOfPiece +=1;
piecesInColumn[column] +=1;
writer.println(column);
yourWait();
}
private void updateFromRecieved(int column)
{
addPiece(column);
colorOfPiece +=1;
piecesInColumn[column] +=1;
yourTurn();
}
public void yourTurn()
{
setButtonEnables(true);
}
public void yourWait()
{
setButtonEnables(false);
try {
updateFromRecieved(Integer.parseInt(reader.readLine()));
} catch (NumberFormatException e) {
System.err.println("Message is not Integer.");
} catch (IOException e) {
System.err.println("Message can not be read.");
}
}
}