怎样将Button和键盘上的按键建立起一一对应的关系

Question

比如我做了个按键1，鼠标监听的已经弄好了，我想将它和键盘上的1键建立起对应的关系啊？

Answer 1

import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;import javax.swing.*;public class T
{
public static void main(String[] args)
{
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
} final JTextField tf = new JTextField();
tf.setEnabled(false);

JPanel p = new JPanel(new GridLayout(0, 3, 5, 5));
for (int i = 0; i <= 9; i++) {
final JButton btn = new JButton(String.valueOf(i));
p.add(btn);

btn.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(
KeyStroke.getKeyStroke((char)(i + '0')), "PressKeyAction");
btn.getActionMap().put("PressKeyAction", new AbstractAction() {
public void actionPerformed(ActionEvent e) {
btn.doClick();
}
});

btn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
tf.setText(tf.getText() + btn.getText());
}
});
}

JFrame f = new JFrame();
JComponent contentPane = (JComponent) f.getContentPane();
contentPane.setLayout(new BorderLayout(0, 5));
contentPane.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));

f.getContentPane().add(p, BorderLayout.CENTER);
f.getContentPane().add(tf, BorderLayout.NORTH);
f.pack();
f.setLocationRelativeTo(null);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}