为什么我的java程序运行不了那
源程序如下,用javac 编译成功,可是用java simplegui.class 时提示
Exception in thread "main" java.lang.NoClass
DefFoundError:simplegui
那?请大家指点!
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class simplegui
{
public simplegui()
{
JFrame frame=new JFrame("simple gui container");
JLabel label=new JLabel("simple gui contain");
label.setHorizontalAlignment(SwingConstants.CENTER);
frame.getContentPane().add(label);
frame.getContentPane().setBackground(Color.red);
frame.setSize(300,200);
frame.setVisible(true);
frame.addWindowListener(new WindowAdapter()
{
public void windowCloseing(WindowEvent evt)
{
System.exit(0);
}
});
}
public static void main(String[] argv)
{
simplegui simple=new simplegui();
}
}