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import java.awt.*;

import javax.swing.*;

public class FrameTest

{

public static void main(String[] args)

{

EventQueue.invokeLater(new Runnable()

{

public void run()

{

JFrame frame = new SimpleFrame();

frame.setUndecorated(true);

frame.setResizable(true);

frame.setTitle("AAAAAAAAA");

frame.toFront();

frame.setExtendedState(Frame.MAXIMIZED_BOTH);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setVisible(true);

}

});

}

}

class SimpleFrame extends JFrame

{

public SimpleFrame()

{

add(new Content());

pack();

Toolkit kit = Toolkit.getDefaultToolkit();

Dimension screenSize = kit.getScreenSize();

int screenWidth = screenSize.width;

int screenHeight = screenSize.height;

setSize(screenWidth/2,screenHeight/2);

setLocationByPlatform(true);

Image image = Toolkit.getDefaultToolkit ().getImage ("C:\\Users\\Asuna\\Pictures\\00010.JPEG");

setIconImage(image);

}

}

class Content extends JComponent

{

public static final int MESSAGE_X = 75;

public static final int MESSAGE_Y = 100;

private static final int DEFAULT_WIDTH = 300;

private static final int DEFAULT_HEIGHT = 200;

public void paintComponent(Graphics g)

{

g.drawString("BBBBBBBBBBBBBBBBBB",DEFAULT_WIDTH/2,DEFAULT_HEIGHT/2);

}

public Dimension getPreferredSize()

{

return new Dimension(DEFAULT_WIDTH,DEFAULT_HEIGHT);

}

}

為什么用上frame.setUndecorated(true); 這個方法就會報錯 不就只是把標(biāo)題欄去掉嗎

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