java.lang.StackOverflowError在JPanel中实现Runnable-java Swing

我有一个 JPanel 其实现 Runnable 接口和 overrides run() 方法在我的构造函数中 面板 我初始化 private 等级( 面板 )的实例 Thread 作为参数a new MyPanel . 就在这一行,我得到了 Exception in thread "main" java.lang.StackOverflowError .

之后出现的错误 :

    at java.awt.Component.setForeground(Unknown Source)
    at javax.swing.JComponent.setForeground(Unknown Source)
    at javax.swing.LookAndFeel.installColors(Unknown Source)
    at javax.swing.LookAndFeel.installColorsAndFont(Unknown Source)
    at javax.swing.plaf.basic.BasicPanelUI.installDefaults(Unknown Source)
    at javax.swing.plaf.basic.BasicPanelUI.installUI(Unknown Source)
    at javax.swing.JComponent.setUI(Unknown Source)
    at javax.swing.JPanel.setUI(Unknown Source)
    at javax.swing.JPanel.updateUI(Unknown Source)
    at javax.swing.JPanel.<init>(Unknown Source)
    at javax.swing.JPanel.<init>(Unknown Source)
    at javax.swing.JPanel.<init>(Unknown Source)

然后 :

    at MyPanel.<init>(MyPanel.java:39)
    at MyPanel.<init>(MyPanel.java:45)

第39行是我的 面板 构造函数,第45行是类的初始化代码 线 这是 this.generateBallsThread = new Thread(new MyPanel());

这里只输入了与问题代码相关的内容。

我的面板.java :

public class MyPanel extends JPanel implements KeyListener,Runnable
{
    private static final long serialVersionUID = 1L;

    private static final Color BACKGROUND_COLOR = Color.WHITE; 
    private static final Color NPC_BALLS_COLOR = Color.RED;

    // The player is an oval
    private int playerRadius = 25;
    private int playerX;
    private int playerY;

    // True - first player position, false - otherwise
    private boolean playerPosition = true;

    // Array of all the balls threads
    private ArrayList<BallThread> balls = new ArrayList<BallThread>();

    private Thread generateBallsThread;

    public MyPanel()
    {
        this.setBackground(MyPanel.BACKGROUND_COLOR);
        this.setFocusable(true);
        this.addKeyListener(this);

        this.generateBallsThread = new Thread(new MyPanel()); // StackOverflowError
        generateBallsThread.start();
    }
}

我很困惑。这是您使用 可运行的 接口,那么什么 java 我想要什么?