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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Test extends JPanel {
private static void createAndShowGUI() {
JFrame frame = new JFrame("Change Icon");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(300, 300);
JButton button = new JButton("Button");
JPanel panel = new JPanel();
panel.add(button);
panel.add(new JButton("Other")); // 测试用tab按切换, 使不同的铵钮得到焦点
frame.getContentPane().add(panel);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println("Button is clicked.");
}
});
button.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
System.out.println("Enter is pressed.");
}
}
});
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
Test.createAndShowGUI();
}
});
}
}