Всем привет, почему-то не отображается кнопка во фрейме, хотя ексепшн работает нормально и всплывающее меню тоже. Может кто подскажет, вот код:
| Код |
import javax.swing.*;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
//import java.awt.event.ActionListener;
import java.awt.*;
public class ExceptionsTest3 {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable(){
public void run()
{
MyFrame frame = new MyFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
});
}
}
class MyFrame extends JFrame
{
public MyFrame()
{
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
setTitle("Testing exceptions...");
setLocationByPlatform(true);
//JButton yellowButton = new JButton("Yellow");
// JButton blueButton = new JButton("Blue");
// JButton redButton = new JButton("Red");
//JButton button = new JButton("Show text");
buttonPanel = new JPanel();
Action yellowAction = new ColorAction("Yellow", Color.YELLOW);
Action blueAction = new ColorAction("Blue", Color.BLUE);
Action redAction = new ColorAction("Red", Color.RED);
Action buttonAction = new ButtonAction("Show text");
buttonPanel.add(new JButton(yellowAction));
buttonPanel.add(new JButton(blueAction));
buttonPanel.add(new JButton(redAction));
buttonPanel.add(new JButton(buttonAction));
add(buttonPanel);
InputMap imap = buttonPanel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
imap.put(KeyStroke.getKeyStroke("ctrl Y"), "panel.yellow");
imap.put(KeyStroke.getKeyStroke("ctrl B"), "panel.blue");
imap.put(KeyStroke.getKeyStroke("ctrl R"), "panel.red");
ActionMap amap = buttonPanel.getActionMap();
amap.put("panel.yellow", yellowAction);
amap.put("panel.blue", blueAction);
amap.put("panel.red", redAction);
//yellowButton.addActionListener(yellowAction);
//blueButton.addActionListener(blueAction);
//redButton.addActionListener(redAction);
}
public class ButtonAction extends AbstractAction
{
public ButtonAction(String s)
{
putValue(Action.SHORT_DESCRIPTION, "Display text");
}
public void actionPerformed(ActionEvent event)
{
Graphics g = buttonPanel.getGraphics();
Font f = new Font("Times New Roman", Font.BOLD, 18);
g.setFont(f);
g.drawString("The button has been clicked.",100,100);
}
}
public class ColorAction extends AbstractAction
{
public ColorAction(String name, Color c)
{
putValue(Action.NAME, name);
putValue(Action.SHORT_DESCRIPTION, "Set panel color to "+name.toLowerCase());
putValue("color", c);
}
public void actionPerformed(ActionEvent event)
{
Color с = (Color) getValue("color");
buttonPanel.setBackground(с);
buttonPanel.repaint();
}
}
private JPanel buttonPanel;
public static int DEFAULT_WIDTH = 450;
public static int DEFAULT_HEIGHT = 300;
}
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Вот скриншот: http://ipicture.ru/Gallery/Viewfull/1179862.html
Заранее спасибо. |