如何使用箭頭鍵將JLabel移動到Swing中

Question

簡單我有一個自定義對象播放器，它擴展了JLabel，我想向我的對象添加一個偵聽器，允許我使用箭頭鍵更改位置。 Swing也有一個時間表更新方法，否則當我預見密鑰問題不會繼續響應，因爲我持有密鑰。下面

public class Player extends JLabel implements Stats{ 
    private int hp; 
    private int bulletcount; 
    public Player(int hitpoints, int clip) throws IOException{ 
     hp=hitpoints; 
     bulletcount=clip; 
     ImageIcon ship= new ImageIcon("Images/fighterjet.png"); 
     this.setIcon(ship); 
     movement mk= new movement(); 
     this.addKeyListener(mk); 
    } 

是我的監聽器類

public class movement implements KeyListener { 
    boolean pressed; 


    @Override 
    public void keyPressed(KeyEvent e) { 
    // TODO Auto-generated method stub 
     if(e.getKeyCode() == KeyEvent.VK_CAPS_LOCK) 
      e.getComponent().setBounds(1000, 1000, 60, 10000); 
      pressed=true; 
    } 

    @Override 
    public void keyReleased(KeyEvent e) { 
     // TODO Auto-generated method stub 

    } 

下面是我的司機

public class Main extends JFrame{ 

    public static void main(String[] args) throws IOException { 
     Main window =new Main(); 
     window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     window.setSize(500,500); 

     Player uno= new Player(10,50); 

     window.add(uno); 
     window.setVisible(true); 
     window.setTitle("SPACE"); 
    } 
} 

Answer 1

前面已經說了，你應該使用的鍵綁定來處理鍵盤事件。

現在您的JLabel變爲：

public class Player extends JLabel implements Stats{ 
private int hp; 
private int bulletcount; 

public Player(int hitpoints, int clip) throws IOException{ 
    hp=hitpoints; 
    bulletcount=clip; 
    ImageIcon ship= new ImageIcon("Images/fighterjet.png"); 
    this.setIcon(ship); 
    movement mk= new movement(); 

getInputMap().put(KeyStroke.getKeyStroke((char) java.awt.event.KeyEvent.VK_CAPS_LOCK), "doSomething"); 
     getActionMap().put("doSomething", new AbstractAction() { 

      @Override 
      public void actionPerformed(ActionEvent e) { 

      } 
     });