Dyanamic JButtons click update other JButtons

Question

Как создать доску 8 * 8 динамиков Динамически . И есть 3 другие кнопки (A, B, C, D)

Как я использовать ActionListenet, так что пользователь, когда он нажмите «кнопку«некоторые JButtons в плате изменит фон

Просто я знаю, как изменить кнопку, которую я нажал, но не другие кнопки !!! ?? Как я это делаю?

package test; 

    import javax.swing.*; 
    import java.awt.*; 
    import java.awt.event.ActionEvent; 
    import java.awt.event.ActionListener; 
    import java.util.ArrayList; 
    import java.util.Collections; 
    import java.util.Random; 

    public class test2 extends javax.swing.JFrame implements ActionListener { 


    public JPanel contentPane; 
    public int GameBoardWidth = 800; 
    public int GameBoardHeight = 900; 
    public int ReservedHeight = 100; 

    public final int ButtonRows = 5; 
    public final int ButtonColumns = 5; 
    private int ButtonCount = 0; 

    private JButton[] GameControlButtons = new JButton[4]; 
    public test2() { 
     initComponents(); 
       this.contentPane = new JPanel(); 
     this. contentPane.setOpaque(true); 
     this.contentPane.setBackground(Color.LIGHT_GRAY); 
     this.contentPane.setLayout(null); 
     this.makeGameBoard(); 
     this.setContentPane(contentPane); 
     this.setSize(GameBoardWidth, GameBoardHeight); 
     this.setLocationByPlatform(true); 
     this.setVisible(true);    
    } 

    public void makeGameBoard() 
    { 
     // Splatter all the buttons 
     for (int i = 0; i < this.ButtonRows; i++) 
     { 
       for (int j = 0; j < this.ButtonColumns; j++) 
       {  
        this.MakeGameButton(i, j); 
        //this.MakeGameButton3(i, j); 
       } 
     }    
     // Make Game Control Buttons 
      for (int i = 0; i < 4; i++) 
      { 
       this.MakeGameControlButton(i); 
      } 
    } 
    public void MakeGameButton(int X, int Y) 
    { 
      int ButtonWidth = this.GameBoardWidth/this.ButtonColumns; 
      int ButtonHeight = this.GameBoardHeight/this.ButtonRows; 
      ButtonWidth -= 3; 
      ButtonHeight -= 25;     
      JButton button = new JButton(); 
      button.setName("GameButton," + X +"," + Y); 
      button.setSize(ButtonWidth, ButtonHeight); 
      Font myFont = new Font("Serif", Font.BOLD, 36); 
      button.setFont(myFont); 
      // Generate Random Number for button 
      Random Rn = new Random();     
      button.setText(""); 
      button.setToolTipText(Integer.toString(Rn.nextInt(11)));     
      // Compute Button Location 
      int XCoor = X * ButtonWidth; 
      int YCoor = (this.ReservedHeight/2) + Y * ButtonHeight;     
      button.setLocation(XCoor, YCoor);  
      //Add action listener to button 
      button.addActionListener(this); 
      this.contentPane.add(button); 
    } 
     public void MakeGameControlButton(int X) 
    { 
      int ButtonWidth = 2 * this.GameBoardWidth/this.ButtonColumns; 
      int ButtonHeight = this.GameBoardHeight/this.ButtonRows; 
      ButtonWidth -= 5; 
      ButtonHeight -= 25;     
      JButton button = new JButton(); 
      button.setName("GameControlButton" + X); 
      button.setSize(ButtonWidth, ButtonHeight);     
      button.setBackground(Color.cyan);     
      Font myFont = new Font("Serif", Font.BOLD, 48); 
      button.setFont(myFont);     
      // Compute Button Location 
      int XCoor = X * ButtonWidth; 
      int YCoor = this.GameBoardHeight - (ButtonHeight + 60);     
      button.setLocation(XCoor, YCoor);  
      //Add action listener to button 
      button.addActionListener(this);     
      GameControlButtons[ButtonCount] = button; 
      ButtonCount++;  
      this.contentPane.add(button); 
    } 

    /** 
    * 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() { 

     setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); 

     javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); 
     getContentPane().setLayout(layout); 
     layout.setHorizontalGroup(
      layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
      .addGap(0, 400, Short.MAX_VALUE) 
     ); 
     layout.setVerticalGroup(
      layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
      .addGap(0, 300, Short.MAX_VALUE) 
     ); 

     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(test2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
     } catch (InstantiationException ex) { 
      java.util.logging.Logger.getLogger(test2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
     } catch (IllegalAccessException ex) { 
      java.util.logging.Logger.getLogger(test2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
     } catch (javax.swing.UnsupportedLookAndFeelException ex) { 
      java.util.logging.Logger.getLogger(test2.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 test2().setVisible(true); 
      } 
     }); 
    } 
    // Variables declaration - do not modify      
    // End of variables declaration     

    @Override 
    public void actionPerformed(ActionEvent e) { 
     throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. 
    } 
} 

Answer 1

Проблема вы столкнулись в инкапсулирования JButton в методе. Таким образом, вы не можете получить доступ к нему извне метода. Вместо этого, есть способ вернуть JButton

public JButton MakeGameButton(int X, int Y) { 
    JButton button = new JButton(); 

    .... 

    return button; 
} 

Затем вы можете ссылаться на кнопку в другом месте.

JButton button1 = MakeGameButton(...); 
JButton button2 = MakeGameButton(...); 

JButton buttonA = new JButton("A Button"); 

buttonA.addActionListener(new ActionListener(){ 
    public void actionPerformed(ActionEvent e){ 
     button1.setBackground(...); 
    } 
});