我认为您缺少
ActionAPI的要点。
AAction旨在提供一个独立的工作单元。这意味着
actionCommand实际上并不需要，因为 触发
actionListener事件时，您确切知道执行事件的上下文
我还要避免使用
KeyStroke.getKeyStroke(String)，因为文本是您要执行的操作的冗长描述（即
pressed B，但是，不必说，这是很痛苦的事情）
因此，以下内容演示了如何使用Actions并将它们分配给
按钮和键绑定
import java.awt.Dimension;import java.awt.EventQueue;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.event.ActionEvent;import java.awt.event.KeyEvent;import javax.swing.AbstractAction;import javax.swing.Action;import javax.swing.JButton;import javax.swing.Jframe;import javax.swing.JPanel;import javax.swing.KeyStroke;import javax.swing.UIManager;import javax.swing.UnsupportedLookAndFeelException;public class ActionTest { public static void main(String[] args) { new ActionTest(); } public ActionTest() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { ex.printStackTrace(); } Jframe frame = new Jframe("Testing"); frame.setDefaultCloseOperation(Jframe.EXIT_ON_CLOSE); frame.add(new TestPane()); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } public class TestPane extends JPanel { public TestPane() { add(createButton(new ActionOne(), KeyStroke.getKeyStroke(KeyEvent.VK_1, 0))); add(createButton(new ActionTwo(), KeyStroke.getKeyStroke(KeyEvent.VK_2, 0))); } public JButton createButton(Action action, KeyStroke keyStroke) { JButton btn = new JButton(action); btn.getInputMap(WHEN_IN_FOCUSED_WINDOW).put(keyStroke, "button_pressed"); btn.getActionMap().put("button_pressed", action); return btn; } @Override public Dimension getPreferredSize() { return new Dimension(200, 200); } protected void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g.create(); g2d.dispose(); } } public class ActionOne extends AbstractAction { public ActionOne() { putValue(NAME, "1"); putValue(Action.ACTION_COMMAND_KEY, "Action.one"); } @Override public void actionPerformed(ActionEvent e) { System.out.println(e.getActionCommand()); } } public class ActionTwo extends AbstractAction { public ActionTwo() { putValue(NAME, "2"); putValue(Action.ACTION_COMMAND_KEY, "Action.two"); } @Override public void actionPerformed(ActionEvent e) { System.out.println(e.getActionCommand()); } }}See How to Use
Actions for
more details
