我正在用java用swing做一个2人的tic-tac-toe游戏。ui按预期工作，但我无法让它检查是否有赢家。
我上了三节课 Main , gui ，和 winnerDisplay . 这个 gui 类负责创建3x3网格和按钮等 winnerDisplay 本课程旨在向获奖者表示祝贺。我假设第一个玩家选择了“x”符号。另外，3x3网格以行大的方式从0到8进行编号(这里的grid是一般意义上的，而不是gridlayout/2d矩阵意义上的。
我想在每个球员的每一回合后检查是否有一个胜利者（我稍后会优化它，因为至少三步之后才能有一个胜利者）。如果有一个赢家或平局，我希望另一个窗口弹出并显示赢家的名字。
现在的问题是：无论我在哪里 isWon() 方法，它不会停止游戏的主ui线程，也不会在每次移动后检查它。我知道ui运行在不同的线程上，但我如何实现我的目标？
这就是 Main 班级：

/*
 * 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 tictactoeDivyanshuVarma;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;

/**
 *
 * @author divyanshuvarma
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    static boolean playerOneTurn = true;
    static boolean isFilled0 = false, isFilled1 = false, isFilled2 = false;
    static boolean isFilled3 = false, isFilled4 = false, isFilled5 = false;
    static boolean isFilled6 = false, isFilled7 = false, isFilled8 = false;
    //static JButton button;
    static boolean gameWon = false;

    public static void main(String[] args) {
        // TODO code application logic here
        gui board = new gui();
        winnerDisplay winnerDisplayWindow = new winnerDisplay();
        setBoardProperties(board);
        initializeBoard(board);
        initializeGame(board);
       /* if (isWon(board)) {
            winnerDisplayWindow.setVisible(true);
            winnerDisplayWindow.setTitle("Congrats Winner !");
            winnerDisplayWindow.setResizable(false);
            winnerDisplayWindow.setAlwaysOnTop(true);
            JLabel winnerLabel = new JLabel("Winner is ");
            winnerDisplayWindow.setWinnerLabel(winnerLabel);
        }*/
        System.out.println("\nThread count: "+Thread.activeCount());
    }

    public static void setBoardProperties(gui board) {
        board.setVisible(true);
        board.setTitle("Tic-Tac-Toe (2-player)");
        board.setResizable(false);
    }

    public static void initializeGame(gui board) {
        JButton button0, button1, button2, button3, button4, button5, button6, button7, button8;
        button0 = board.getButton0();
        button0.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (!isFilled0) {
                    if (playerOneTurn) {
                        button0.setText("X");
                    } else {
                        button0.setText("O");
                    }
                    isFilled0 = true;
                    // I HAVE TRIED PLACING isWon() HERE   
                    if (playerOneTurn) {
                        playerOneTurn = false;
                    } else {
                        playerOneTurn = true;
                    }
                }
            }
        });
        button1 = board.getButton1();
        button1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (!isFilled1) {
                    if (playerOneTurn) {
                        button1.setText("X");
                    } else {
                        button1.setText("O");
                    }
                    isFilled1 = true;
                    // I HAVE TRIED PLACING isWon() HERE 
                    if (playerOneTurn) {
                        playerOneTurn = false;
                    } else {
                        playerOneTurn = true;
                    }
                }
            }
        });
        button2 = board.getButton2();
        button2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (!isFilled2) {
                    if (playerOneTurn) {
                        button2.setText("X");
                    } else {
                        button2.setText("O");
                    }
                    isFilled2 = true;
                    // I HAVE TRIED PLACING isWon() HERE 
                    if (playerOneTurn) {
                        playerOneTurn = false;
                    } else {
                        playerOneTurn = true;
                    }
                }
            }
        });
        button3 = board.getButton3();
        button3.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (!isFilled3) {
                    if (playerOneTurn) {
                        button3.setText("X");
                    } else {
                        button3.setText("O");
                    }
                    isFilled3 = true;
                    // I HAVE TRIED PLACING isWon() HERE 
                    if (playerOneTurn) {
                        playerOneTurn = false;
                    } else {
                        playerOneTurn = true;
                    }
                }
            }
        });
        button4 = board.getButton4();
        button4.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (!isFilled4) {
                    if (playerOneTurn) {
                        button4.setText("X");
                    } else {
                        button4.setText("O");
                    }
                    isFilled4 = true;
                    // I HAVE TRIED PLACING isWon() HERE 
                    if (playerOneTurn) {
                        playerOneTurn = false;
                    } else {
                        playerOneTurn = true;
                    }
                }
            }
        });
        button5 = board.getButton5();
        button5.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (!isFilled5) {
                    if (playerOneTurn) {
                        button5.setText("X");
                    } else {
                        button5.setText("O");
                    }
                    isFilled5 = true;
                    // I HAVE TRIED PLACING isWon() HERE 
                    if (playerOneTurn) {
                        playerOneTurn = false;
                    } else {
                        playerOneTurn = true;
                    }
                }
            }
        });
        button6 = board.getButton6();
        button6.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (!isFilled6) {
                    if (playerOneTurn) {
                        button6.setText("X");
                    } else {
                        button6.setText("O");
                    }
                    isFilled6 = true;
                    // I HAVE TRIED PLACING isWon() HERE 
                    if (playerOneTurn) {
                        playerOneTurn = false;
                    } else {
                        playerOneTurn = true;
                    }
                }
            }
        });
        button7 = board.getButton7();
        button7.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (!isFilled7) {
                    if (playerOneTurn) {
                        button7.setText("X");
                    } else {
                        button7.setText("O");
                    }
                    isFilled7 = true;
                    // I HAVE TRIED PLACING isWon() HERE 
                    if (playerOneTurn) {
                        playerOneTurn = false;
                    } else {
                        playerOneTurn = true;
                    }
                }
            }
        });
        button8 = board.getButton8();
        button8.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (!isFilled8) {
                    if (playerOneTurn) {
                        button8.setText("X");
                    } else {
                        button8.setText("O");
                    }
                    isFilled8 = true;
                    // I HAVE TRIED PLACING isWon() HERE 
                    if (playerOneTurn) {
                        playerOneTurn = false;
                    } else {
                        playerOneTurn = true;
                    }
                }
            }
        });// I HAVE TRIED PLACING isWon() HERE TOO
    }

    public static boolean isWon(gui board) {
        String symbol0, symbol1, symbol2, symbol3, symbol4, symbol5, symbol6, symbol7, symbol8;
        symbol0 = board.getButton0().getText();
        symbol1 = board.getButton1().getText();
        symbol2 = board.getButton2().getText();
        symbol3 = board.getButton3().getText();
        symbol4 = board.getButton4().getText();
        symbol5 = board.getButton5().getText();
        symbol6 = board.getButton6().getText();
        symbol7 = board.getButton7().getText();
        symbol8 = board.getButton8().getText();
        if (symbol0.equals(symbol4) && symbol4.equals(symbol8)) //main diagonal
        {
            gameWon = true;
        }
        if (symbol2.equals(symbol4) && symbol4.equals(symbol6)) //other diagonal
        {
            gameWon = true;
        }
        if (symbol0.equals(symbol1) && symbol1.equals(symbol2)) //first row
        {
            gameWon = true;
        }
        if (symbol3.equals(symbol4) && symbol4.equals(symbol5)) //second row
        {
            gameWon = true;
        }
        if (symbol6.equals(symbol7) && symbol7.equals(symbol8)) //third row
        {
            gameWon = true;
        }
        if (symbol0.equals(symbol3) && symbol3.equals(symbol6)) //first column
        {
            gameWon = true;
        }
        if (symbol1.equals(symbol4) && symbol4.equals(symbol7)) //second column
        {
            gameWon = true;
        }
        if (symbol2.equals(symbol5) && symbol5.equals(symbol8)) //third column
        {
            gameWon = true;
        }
        if (gameWon) {
            return true;
        } else {
            return false;
        }
    }

    public static void initializeBoard(gui board) {
        JButton button;
        button = board.getButton0();
        button.setText("");
        button = board.getButton1();
        button.setText("");
        button = board.getButton2();
        button.setText("");
        button = board.getButton3();
        button.setText("");
        button = board.getButton4();
        button.setText("");
        button = board.getButton5();
        button.setText("");
        button = board.getButton6();
        button.setText("");
        button = board.getButton7();
        button.setText("");
        button = board.getButton8();
        button.setText("");
    }
}

这就是 gui 班级：

/*
 * 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 tictactoeDivyanshuVarma;

import javax.swing.JButton;

/**
 *
 * @author divyanshuvarma
 */
public class gui extends javax.swing.JFrame {

    /**
     * Creates new form gui
     */
    public gui() {
        initComponents();
    }

    public void setButton0Text(String symbol) {
        this.button0.setText(symbol);
    }

    public void setButton1Text(String symbol) {
        this.button1.setText(symbol);
    }

    public void setButton2Text(String symbol) {
        this.button2.setText(symbol);
    }

    public void setButton3Text(String symbol) {
        this.button3.setText(symbol);
    }

    public void setButton4Text(String symbol) {
        this.button4.setText(symbol);
    }

    public void setButton5Text(String symbol) {
        this.button5.setText(symbol);
    }

    public void setButton6Text(String symbol) {
        this.button6.setText(symbol);
    }

    public void setButton7Text(String symbol) {
        this.button7.setText(symbol);
    }

    public void setButton8Text(String symbol) {
        this.button8.setText(symbol);
    }

    public JButton getButton0() {
        return button0;
    }

    public JButton getButton1() {
        return button1;
    }

    public JButton getButton2() {
        return button2;
    }

    public JButton getButton3() {
        return button3;
    }

    public JButton getButton4() {
        return button4;
    }

    public JButton getButton5() {
        return button5;
    }

    public JButton getButton6() {
        return button6;
    }

    public JButton getButton7() {
        return button7;
    }

    public JButton getButton8() {
        return button8;
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        button1 = new javax.swing.JButton();
        button3 = new javax.swing.JButton();
        button5 = new javax.swing.JButton();
        button2 = new javax.swing.JButton();
        button6 = new javax.swing.JButton();
        button8 = new javax.swing.JButton();
        button4 = new javax.swing.JButton();
        button0 = new javax.swing.JButton();
        button7 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        button1.setText("jButton1");
        button1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                button1ActionPerformed(evt);
            }
        });

        button3.setText("jButton1");

        button5.setText("jButton1");

        button2.setText("jButton1");

        button6.setText("jButton1");

        button8.setText("jButton1");

        button4.setText("jButton1");

        button7.setText("jButton1");

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addComponent(button0, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addGap(72, 72, 72)
                        .addComponent(button1))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addComponent(button3)
                        .addGap(72, 72, 72)
                        .addComponent(button4))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addComponent(button6)
                        .addGap(72, 72, 72)
                        .addComponent(button7)))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 79, Short.MAX_VALUE)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(button8, javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(button5, javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(button2, javax.swing.GroupLayout.Alignment.TRAILING))
                .addContainerGap())
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(button0, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(button1, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(button2, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(18, 18, Short.MAX_VALUE)
                        .addComponent(button8, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(32, 32, 32)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(button3, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(button4, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(button5, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 55, Short.MAX_VALUE)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(button6, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(button7, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE))))
                .addContainerGap())
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
        );

        pack();
    }// </editor-fold>                        

    private void button1ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
    }                                       

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(gui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(gui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(gui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(gui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new gui().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton button0;
    private javax.swing.JButton button1;
    private javax.swing.JButton button2;
    private javax.swing.JButton button3;
    private javax.swing.JButton button4;
    private javax.swing.JButton button5;
    private javax.swing.JButton button6;
    private javax.swing.JButton button7;
    private javax.swing.JButton button8;
    private javax.swing.JPanel jPanel1;
    // End of variables declaration                   
}

这就是 winnerDisplay 班级：

/*
 * 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 tictactoeDivyanshuVarma;

import javax.swing.JLabel;

/**
 *
 * @author divyanshuvarma
 */
public class winnerDisplay extends javax.swing.JFrame {

    /**
     * Creates new form winnerDisplay
     */
    public winnerDisplay() {
        initComponents();
    }

    public JLabel getWinnerLabel() {
        return winnerLabel;
    }

    public void setWinnerLabel(JLabel winnerLabel) {
        this.winnerLabel = winnerLabel;
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        winnerLabel = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        winnerLabel.setText("jLabel1");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(77, 77, 77)
                .addComponent(winnerLabel, javax.swing.GroupLayout.PREFERRED_SIZE, 243, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(80, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(82, Short.MAX_VALUE)
                .addComponent(winnerLabel, javax.swing.GroupLayout.PREFERRED_SIZE, 124, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(94, 94, 94))
        );

        pack();
    }// </editor-fold>                        

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(winnerDisplay.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(winnerDisplay.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(winnerDisplay.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(winnerDisplay.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new winnerDisplay().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JLabel winnerLabel;
    // End of variables declaration                   
}