?? buttontestapplet.java
字號:
//ButtonTestApplet.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ButtonTestApplet extends JApplet
{
public void init()
{
ButtonPanel buttonpanel = new ButtonPanel();
Container container = getContentPane();
container.add(buttonpanel);
}
}
class ButtonPanel extends JPanel
{
private class ColorAction implements ActionListener
{
private Color backgroundColor;
public void actionPerformed(ActionEvent actionevent)
{
setBackground(backgroundColor);
repaint();
}
public ColorAction(Color color)
{
backgroundColor = color;
}
}
public ButtonPanel()
{
JButton jbutton = new JButton("橙色");
JButton jbutton1 = new JButton("藍色");
JButton jbutton2 = new JButton("紅色");
add(jbutton);
add(jbutton1);
add(jbutton2);
ColorAction coloraction = new ColorAction(Color.orange);
ColorAction coloraction1 = new ColorAction(Color.blue);
ColorAction coloraction2 = new ColorAction(Color.red);
jbutton.addActionListener(coloraction);
jbutton1.addActionListener(coloraction1);
jbutton2.addActionListener(coloraction2);
}
}
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