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import javax.swing.*;
public class SimpleFrameTest
{
public static void main(String args)
{
SimpleFrame frame = new SimpleFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
class SimpleFrame extends JFrame
{
public SimpleFrame()
{
setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);
}
public static final int DEFAULT_WIDTH = 300;
public static final int DEFAULT_HEIGHT = 200;
}
class SimpleFrame extends JFrame
这行提示: