您需要创建一个
Action供按钮使用的。然后，
Action可以使用，
ActionListener并且可以将绑定
Action到
KeyStroke。
阅读Swing教程。有以下部分：
- 如何使用动作
- 如何使用键绑定
例如：
import java.awt.*;import java.awt.event.*;import javax.swing.*;import javax.swing.border.*;public class CalculatorPanel extends JPanel{ private JTextField display; public CalculatorPanel() { Action numberAction = new AbstractAction() { @Override public void actionPerformed(ActionEvent e) {// display.setCaretPosition( display.getdocument().getLength() ); display.replaceSelection(e.getActionCommand()); } }; setLayout( new BorderLayout() ); display = new JTextField(); display.setEditable( false ); display.setHorizontalAlignment(JTextField.RIGHT); add(display, BorderLayout.NORTH); JPanel buttonPanel = new JPanel(); buttonPanel.setLayout( new GridLayout(0, 5) ); add(buttonPanel, BorderLayout.CENTER); for (int i = 0; i < 10; i++) { String text = String.valueOf(i); JButton button = new JButton( text ); button.addActionListener( numberAction ); button.setBorder( new LineBorder(Color.BLACK) ); button.setPreferredSize( new Dimension(30, 30) ); buttonPanel.add( button ); InputMap inputMap = buttonPanel.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW); inputMap.put(KeyStroke.getKeyStroke(text), text); inputMap.put(KeyStroke.getKeyStroke("NUMPAD" + text), text); buttonPanel.getActionMap().put(text, numberAction); } } private static void createAndShowUI() { Jframe frame = new Jframe("Calculator Panel"); frame.setDefaultCloseOperation( Jframe.EXIT_ON_CLOSE ); frame.add( new CalculatorPanel() ); frame.pack(); frame.setLocationRelativeTo( null ); frame.setVisible(true); } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { createAndShowUI(); } }); }}
