Java开发网 - 一个很棘手的Java程序。。。

Topic: 一个很棘手的Java程序。。。

1.一个很棘手的Java程序。。。

Posted by: sxjy
Posted on: 2004-11-30 22:23

我调试了一个关于线程的程序，编译的时候没错，但是运行的时候出了以下的问题，请问是什么原因？

java.lang.NoClassDefFoundError: Counter1 (wrong name: c14/Counter1)
  at java.lang.ClassLoader.defineClass0(Native Method)
  at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
  at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
  at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
  at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
  at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
Exception in thread "main" Exit code: 1
There were errors

该程序的源程序是：

package c14;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;

public class Counter1 extends Applet {
private int count = 0;
private Button
onOff = new Button("Toggle"),
start = new Button("Start");
private TextField t = new TextField(10);
private boolean runFlag = true;
public void init() {
add( t);
start.addActionListener(new StartL());
add(start);
onOff.addActionListener(new OnOffL());
add(onOff);
}
public void go() {
while (true) {
try {
Thread.currentThread().sleep(100);
} catch (InterruptedException e){}
if(runFlag)
t.setText(Integer.toString(count++));
}
}
class StartL implements ActionListener {
public void actionPerformed(ActionEvent e) {
go();
}
}
class OnOffL implements ActionListener {
public void actionPerformed(ActionEvent e) {
runFlag = !runFlag;
}
}
public static void main(String[] args) {
Counter1 applet = new Counter1();
Frame aFrame = new Frame("Counter1");
aFrame.addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
aFrame.add(applet, BorderLayout.CENTER);
aFrame.setSize(300,200);
applet.init();
applet.start();
aFrame.setVisible(true);
}
}