Java 穆塞利斯滕纳什么也不做

所以我用java编写了这段代码。它应该打印“鼠标点击”当我按下鼠标按钮，但它没有做什么

import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.ArrayList;
import java.util.List;

import javax.swing.ImageIcon;
import javax.swing.JPanel;

public class mainPanel extends JPanel implements MouseListener {

    List<Integer> listLoc;
    List<ImageIcon> listImg;

    ImageIcon objPpc;
    ImageIcon ttlSpace;

    public mainPanel(){
        loadImg();
        fillBck(ttlSpace);
        addTtl(objPpc, 1);
        repaint();
    }

    public void fillBck(ImageIcon fillingImg){
        for(int i = 0; i < 16; i++){
            addTtl(fillingImg, i);
        }
    }

    public void loadImg(){
        objPpc = new ImageIcon ("img/obj/ppcBuild1.png");
        ttlSpace = new ImageIcon ("img/ttl/spaceBuild1.png");
        listLoc = new ArrayList<Integer>();
        listImg = new ArrayList<ImageIcon>();
    }

    public void addTtl(ImageIcon addedImg, int addedLoc){

        System.out.println("----- addTtl -----");
        System.out.println(addedImg);
        listImg.add(addedImg);
        System.out.println(addedLoc);
        listLoc.add(addedLoc);
        System.out.println("----- /addTtl -----");
        System.out.println("");
    }

    public void paint (Graphics g){
        super.paint(g);
        for (int i = 0; i < listImg.size(); i ++) {
            g.drawImage((listImg.get(i)).getImage(), (listLoc.get(i) * (this.getWidth() / 16)), 0, (this.getWidth() / 16) , this.getHeight(), null);

        }
    }

    @Override
    public void mouseClicked(MouseEvent e) {
        // TODO Auto-generated method stub
        System.out.println("Mouse Click");
    }

    @Override
    public void mouseEntered(MouseEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public void mouseExited(MouseEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public void mousePressed(MouseEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public void mouseReleased(MouseEvent e) {
        // TODO Auto-generated method stub

    }

}

当我按下屏幕上的任何鼠标按钮（甚至滚轮[MOUSE3]）时，它什么也不做

import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.ArrayList;
import java.util.List;

import javax.swing.ImageIcon;
import javax.swing.JPanel;

public class mainPanel extends JPanel implements MouseListener {

    List<Integer> listLoc;
    List<ImageIcon> listImg;

    ImageIcon objPpc;
    ImageIcon ttlSpace;

    public mainPanel(){
        loadImg();
        fillBck(ttlSpace);
        addTtl(objPpc, 1);
        repaint();
    }

    public void fillBck(ImageIcon fillingImg){
        for(int i = 0; i < 16; i++){
            addTtl(fillingImg, i);
        }
    }

    public void loadImg(){
        objPpc = new ImageIcon ("img/obj/ppcBuild1.png");
        ttlSpace = new ImageIcon ("img/ttl/spaceBuild1.png");
        listLoc = new ArrayList<Integer>();
        listImg = new ArrayList<ImageIcon>();
    }

    public void addTtl(ImageIcon addedImg, int addedLoc){

        System.out.println("----- addTtl -----");
        System.out.println(addedImg);
        listImg.add(addedImg);
        System.out.println(addedLoc);
        listLoc.add(addedLoc);
        System.out.println("----- /addTtl -----");
        System.out.println("");
    }

    public void paint (Graphics g){
        super.paint(g);
        for (int i = 0; i < listImg.size(); i ++) {
            g.drawImage((listImg.get(i)).getImage(), (listLoc.get(i) * (this.getWidth() / 16)), 0, (this.getWidth() / 16) , this.getHeight(), null);

        }
    }

    @Override
    public void mouseClicked(MouseEvent e) {
        // TODO Auto-generated method stub
        System.out.println("Mouse Click");
    }

    @Override
    public void mouseEntered(MouseEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public void mouseExited(MouseEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public void mousePressed(MouseEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public void mouseReleased(MouseEvent e) {
        // TODO Auto-generated method stub

    }

}

---

我怎样才能解决这个问题呢？

您的代码从未向面板添加任何鼠标侦听器。你应该在某个地方有这句话：

this.addMouseListener(this);

---

当您实现MouseListener时，这意味着您可以监听鼠标事件。要实际侦听鼠标事件，必须将侦听器添加（注册）到生成鼠标事件的某些组件。

您需要注册鼠标侦听器添加

addMouseListener(this);

另请参见

---

请学习java命名约定并坚持使用。顺便说一句，在Swing中，要覆盖自定义绘制的方法是paintComponent（而不是paint）