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我做了这个简单的游戏,其中的图像绘制在光标位置。有一段时间它的工作,但很快它会抛出一个StackOverFlowError异常。简单的游戏抛出StackOverFlowError
public class Graphic extends JComponent {
private ImageIcon imgIcon = new ImageIcon("/Users/Koolkids/Documents/codeStuff/Java/BattleOfTheEmojis/src/img/happy.png");
private Image img = imgIcon.getImage();
private Point cursor = new Point(0, 0);
public MouseMotionAdapter m = new MouseMotionAdapter() {
@Override
public void mouseMoved(MouseEvent e) {
super.mouseMoved(e);
cursor = e.getPoint();
}
};
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
g2.setBackground(Color.WHITE);
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
this.addMouseMotionListener(m);
g2.drawImage(img, cursor.x - 11, cursor.y - 11, 22, 23, this);
repaint();
}
}
输出
Exception in thread "AWT-EventQueue-0" java.lang.StackOverflowError
at java.awt.AWTEventMulticaster.mouseMoved(AWTEventMulticaster.java:329)
at java.awt.AWTEventMulticaster.mouseMoved(AWTEventMulticaster.java:329)
at java.awt.AWTEventMulticaster.mouseMoved(AWTEventMulticaster.java:329)
,并继续这样下去。
没有用过Java UI代码的经验,但是 - 它看起来像是通过在绘画函数中调用'this.addMouseMotionListener(m);'来为每一帧添加一个新的事件侦听器。 –
并删除'super.mouseMoved(e);' –