关于Java鼠标监听器的问题

Question

我按网上的鼠标监听器的内部类的方法写的结构，但是不知道为什么用鼠标之后没有结果，麻烦各位大神帮我看看

新人第一次用这个提问，关于提问的方式或者表述不清楚也欢迎大家指正啊

谢谢大家！！！

buttonListener是Map1的内部类

import javax.swing.*;
public class test
{
    public static void main(String[] args){  
        JFrame frame=new Map1(); 
        frame.setVisible(true);
        new Map1();
    }  
}

import javax.swing.JFrame;
import javax.swing.*;
import java.awt.GridLayout;
import java.awt.*;
import java.awt.event.*;

public class Map1 extends JFrame 
{
    ImageIcon bank1 = new ImageIcon("bank1.jpg");//为按钮加载图片
    ImageIcon bank2 = new ImageIcon("bank2.jpg");
    ImageIcon plank1 = new ImageIcon("plank1.jpg");
    ImageIcon plank1_man = new ImageIcon("plank1_man.jpg");
    ImageIcon plank2 = new ImageIcon("plank2.jpg");
    ImageIcon plank2_man = new ImageIcon("plank2_man.jpg");
    ImageIcon stump1 = new ImageIcon("stump1.jpg");
    ImageIcon stump1_man = new ImageIcon("stump1_man.jpg");
    ImageIcon stump2 = new ImageIcon("stump2.jpg");
    ImageIcon stump2_man = new ImageIcon("stump2_man.jpg");
    ImageIcon stump3 = new ImageIcon("stump3.jpg");
    ImageIcon stump3_man = new ImageIcon("stump3_man.jpg");
    ImageIcon water1 = new ImageIcon("water1.jpg");
    ImageIcon water2 = new ImageIcon("water2.jpg");
    ImageIcon water3 = new ImageIcon("water3.jpg");
    ImageIcon water4 = new ImageIcon("water4.jpg");
   JButton[][] button=new JButton[13][9];//创建按钮对象
    public int xmove;
    public int ymove;
    public int xdecide=4;
    public int ydecide=12;
    public int decide[][]={
                   {0,0,0,0,0,0,0,0,0},//小人是1
                   {0,0,0,0,0,0,0,0,0},//木桩子是q2   
                   {2,0,0,0,0,0,0,0,0},//桥是3
                   {0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,2,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0},
                   {2,0,2,3,3,3,2,0,0},
                   {0,0,0,0,0,0,0,0,0},
                   {2,0,0,0,2,0,0,0,0},
                   {3,0,0,0,3,0,0,0,0},
                   {2,0,0,0,3,0,0,0,0},
                   {0,0,0,0,3,0,0,0,0},
                   {0,0,0,0,1,0,0,0,0},
                                     };
   public Map1()
   {
        setSize(300,450);//设置大小
        //JButton[][] button=new JButton[13][9];//创建按钮对象
        JPanel panel=new JPanel();
        setTitle("RiverCrossing");
        this.add(panel);
        panel.setLayout(new GridLayout(13,9,0,0));
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        for(int a=0;a<9;a++)
        {
            button[0][a]=new JButton(bank2);        
        }
        for(int a=0;a<9;a++)
        {
            button[12][a]=new JButton(bank1);
        }
        for(int a=1;a<12;a++)
        {
            for(int b=0;b<9;b++)
            {
                button[a][b]=new JButton(water1);
            }
        }
        //下面是第一个地图的（这些跟问题没关）
        button[2][0]=new JButton(stump1);
        button[6][0]=new JButton(stump1);
        button[8][0]=new JButton(stump1);
        button[10][0]=new JButton(stump1);
        button[3][1]=new JButton(water4);
        button[5][1]=new JButton(water3);
        button[5][2]=new JButton(water4);
        button[6][2]=new JButton(stump1);
        button[8][2]=new JButton(water4);
        button[2][4]=new JButton(water4);
        button[4][4]=new JButton(stump1);
        button[8][4]=new JButton(stump1);
        button[3][6]=new JButton(water3);
        button[6][6]=new JButton(stump1);
        button[12][4]=new JButton(stump2_man);
        button[0][4]=new JButton(stump3);
        button[9][0]=new JButton(plank2);
        button[9][4]=new JButton(plank2);
        button[10][4]=new JButton(plank2);
        button[11][4]=new JButton(plank2);
        buttonListener btListener[][]=new buttonListener[13][9];//创建监听器
        for(int a=0;a<13;a++)
        {
           for(int b=0;b<9;b++)
           {
             panel.add(button[a][b]);
             button[a][b].addMouseListener(btListener[a][b]);//给监听器加到按钮
             //System.out.printf("21");
           }
        }

   }
     public class buttonListener implements MouseListener
     {
          public void mouseReleased(MouseEvent e)
      {   System.out.printf("1");
          outterloop:if(e.getButton() == MouseEvent.BUTTON1)//左键该执行的操作（移动小人）
           { 
              for(ymove=0;ymove<13;ymove++)//行的位置
              {
                  for(xmove=0;xmove<9;xmove++)//列的位置
                  {
                      if(e.getSource()==button[ymove][xmove])//点击的那个按钮的坐标
                      {   
                         //move(button,ymove,xmove);
                         ymove=0;
                         xmove=0;
                         break outterloop;
                      }
                  }
              }
           }

      }  
      public void mousePressed(MouseEvent e)
      {
      }
      public void mouseClicked(MouseEvent e)
      { 

      }
      public void mouseEntered(MouseEvent e)
      {

      }
      public void mouseExited(MouseEvent e)
      {

      }
   }
}

Answer 1

本例中没有效果应该两处的问题：
1、只是为监听类创建了数组，并没有为每个数组元素new实例 ；
buttonListener btListener[][]=new buttonListener[13][9]
for(int a=0;a<13;a++){
for(int b=0;b<9;b++){
btListener[a][b]=new buttonListener();
}
}
2、button类比较时应用equals(）方法，而不是==。
所以这个语句（if(e.getSource()==button[ymove][xmove])）是一直返回false的；
其实，完全没必要建立多监听实例，所有按钮可以共用同一个监听，在监听中判断它是哪个按钮触发的就可以了。
一个类最好只有一个Class，Map1类继承JFrame后可以继续implements MouseListener接口，
然后所有按钮 button[a][b].addMouseListener(this);然后在监听中判断属于哪个按钮，在进行相应的处理。