小编rdm*_*zcn的帖子

我正在为我的项目创建一个gui.首次加载gui时,只能看到背景,因此按钮不可见,但当鼠标悬停在它们上面时,它们是可见的.有什么办法解决这个问题？

public class Home extends JFrame{
//New JPanel 
private JPanel home;

//Creating image url. You must be change url
ImageIcon icon = new ImageIcon("img//home1.jpeg");

//Home Class
public Home(){

    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setBounds(100, 100, 960, 640);
    setTitle("LoneyTunes Crush");
    home = new JPanel();
    home.setBorder(new EmptyBorder(5, 5, 5, 5));
    home.setLayout(new BorderLayout(0, 0));
    setContentPane(home);

    getContentPane().setLayout(null);
    JLabel background = new JLabel(new ImageIcon("img//giphy."));
    getContentPane().add(background);
    background.setLayout(new FlowLayout());

        //Creating Buttons
    JButton play = new JButton("Play");
    play.setBounds(20, 20, 200, 30);
    JButton setting = new JButton("Settings");
    setting.setBounds(20, 60, 200, 30);
    JButton exit …

我喜欢做一个像宝石迷阵或糖果粉碎的游戏.我创建了64个按钮单元8x8.我想更改点击按钮的图像.但我不能.如果你能提供帮助,我会很高兴的.或者我怎么办？

编辑:我很抱歉.我无法清楚地解释我的问题.我的问题,我想改变点击两个按钮的图片.例如,我点击了按钮[5],然后点击了按钮[11].然后按钮[5]的图标应为按钮[11]图标,[11]的图标应为按钮[5]图标.

public class butondeneme extends JFrame{

private JPanel grid;
private JFrame jr;

public butondeneme(){
    jr=new JFrame();
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setBounds(100, 100, 640, 640);
    grid=new JPanel();
    grid.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
    grid.setLayout(new GridLayout(8,8,5,5));

    JButton[] buttons = new JButton[64];


 //Creating random image for buttons

        for (int i = 0; i<buttons.length; i++) {

                Random r = new Random();
                int a = r.nextInt(9)+1;
                switch(a){
                case 1 : buttons[i]=new JButton(new ImageIcon("img//Cakal.png"));
                        break;
                case 2 : buttons[i]=new JButton(new ImageIcon("img//BugsBunny.png"));
                        break;
                case 3 : buttons[i]=new JButton(new ImageIcon("img//Pig.png"));
                        break; …