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java的编程问题
import java.awt.*;
import java.awt.event.*;
public class TestButton{
public static void main(String args[]){
Frame f=new Frame("Test");
f.setSize(200,200);
f.setLayout(new FlowLayout(FlowLayout.CENTER));
Button b=new Button("press me");
b.addActionListener(new ButtonHandler());
f.add(b);
f.setVisible(true);
}
}
class ButtonHandler implements ActionListener{
public void actionPerformed(ActionEvent e){
System.out.println(e.getActionCommand());
}
}
编译通过了,为什么不能运行,请教下大家,
--------------------Configuration: <Default>--------------------
java.lang.NoSuchMethodError: main
Exception in thread "main"
Process completed.
这是出错的原因 |
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