原码
import java.awt.*;
import java.awt.event.*;
public class TankClient extends Frame {
int x = 50, y = 50;
@Override
public void paint(Graphics g) {
Color c = g.getColor();
g.setColor(Color.RED);
g.fillOval(50, 50, 30, 30);
y += 5;
}
public void lauchFrame() {
this.setLocation(400, 300);
this.setSize(800, 600);
this.setTitle("TankWar");
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
this.setResizable(false);
this.setBackground(Color.GREEN);
setVisible(true);
new Thread(new PaintThread()).start();
}
public static void main(String[] args) {
TankClient tc = new TankClient();
tc.lauchFrame();
}
private class PaintThread implements Runnable{
@Override
public void run() {
repaint();
try {
Thread.sleep(50);
} catch (InterruptedException e) {
e.printStackTrace();
}
}}
}
问题
Exception in thread "main" java.lang.NoClassDefFoundError: TankClient$PaintThread
at TankClient.lauchFrame(TankClient.java:27)
at TankClient.main(TankClient.java:32)
Caused by: java.lang.ClassNotFoundException: TankClient$PaintThread
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
... 2 more