Java Swing キーの処理: キー バインディングとキー リスナー - どちらを選択するべきですか?

myComponent.getInputMap().put("userInput", "myAction");
myComponent.getActionMap().put("myAction", action);

tank1.getInputMap(IFW).put(KeyStroke.getKeyStroke("W"), "move up");
tank2.getInputMap(IFW).put(KeyStroke.getKeyStroke("S"), "move down");
// ...
tankN.getInputMap(IFW).put(KeyStroke.getKeyStroke("T"), "fire");

obj1.getInputMap(IFW).remove(KeyStroke.getKeyStroke(oldKey));
// ...
obj1.getInputMap(IFW).put(KeyStroke.getKeyStrokeForEvent(ke),
                 obj1.getInputMap(IFW).get(KeyStroke.getKeyStroke(oldKey)));

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class MyGame extends JFrame {

    public MyGame() {
        // Do layout management, create objects, etc.
        JLabel obj1 = new JLabel();
        JLabel obj2 = new JLabel();

        // Set key bindings for object 1
        obj1.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke("UP"), "move up");
        obj1.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke("DOWN"), "move down");
        obj1.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke("control CONTROL"), "fire");
        obj1.getActionMap().put("move up", new MoveAction(1, 1));
        obj1.getActionMap().put("move down", new MoveAction(2, 1));
        obj1.getActionMap().put("fire", new FireAction(1));

        // Set key bindings for object 2
        obj2.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke("W"), "move up");
        obj2.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke("S"), "move down");
        obj2.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke("T"), "fire");
        obj2.getActionMap().put("move up", new MoveAction(1, 2));
        obj2.getActionMap().put("move down", new MoveAction(2, 2));
        obj2.getActionMap().put("fire", new FireAction(2));

        // Add objects to the JFrame
        add(obj1);
        add(obj2);
    }

    // Handle key rebinding
    public static void rebindKey(KeyEvent ke, String oldKey) {
        // Find and replace key binding
    }

    // Main method
    public static void main(String[] args) {
        new MyGame();
    }

    // Inner class for move action
    private class MoveAction extends AbstractAction {

        int direction;
        int player;

        MoveAction(int direction, int player) {
            this.direction = direction;
            this.player = player;
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            // Implement move logic
        }
    }

    // Inner class for fire action
    private class FireAction extends AbstractAction {

        int player;

        FireAction(int player) {
            this.player = player;
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            // Implement fire logic
        }
    }
}