我想知道如何在Java中的Swing应用程序中添加时间延迟,我使用了Thread.sleep(time)
,并且我还使用了SwingWorker,但它不起作用。这是我的代码的一部分:
switch (state) {
case 'A':
if (charAux == 'A') {
state = 'B';
//Here's where I'd like to add a time delay
jLabel13.setForeground(Color.red);
break;
} else {
//Here's where I'd like to add a time delay
jLabel12.setForeground(Color.red);
break;
}
}
希望您能帮助我或解决我在使用SwingWorker时的疑问。
这是一个使用javax.swing.Timer
的示例
public class TestBlinkingText {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException ex) {
} catch (InstantiationException ex) {
} catch (IllegalAccessException ex) {
} catch (UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new BlinkPane());
frame.setSize(200, 200);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
protected static class BlinkPane extends JLabel {
private JLabel label;
private boolean state;
public BlinkPane() {
label = new JLabel("Look at me!");
setLayout(new GridBagLayout());
add(label);
Timer timer = new Timer(500, new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
state = !state;
if (state) {
label.setForeground(Color.RED);
} else {
label.setForeground(Color.BLACK);
}
repaint();
}
});
timer.setRepeats(true);
timer.setCoalesce(true);
timer.setInitialDelay(0);
timer.start();
}
}
}
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