在Java中使用鼠標偵聽器時如何跨變量發送

Question

這是我的代碼：

JTextField[] _CreatePlayers = new JTextField[3];
    for (int i = 1; i < _CreatePlayers.length; i++) {
        _CreatePlayers[i] = new JTextField("Player " + i+" input name here");
        _CreatePlayers[i].addMouseListener(new MouseAdapter(){
        @Override
        public void mouseClicked(MouseEvent e){
            _CreatePlayers[i].setText("");  <- error is here as i is not inside the class made by mouse click
        }
    });
        _2Player.add(_CreatePlayers[i]);
    }

我不確定如何解決此問題，因為我對事件驅動的編程不太熟悉

Answer 1

這是一個簡單的解決方法：

    for (int i = 1; i < _CreatePlayers.length; i++) {
        final int finalI = i;
        _CreatePlayers[i] = new JTextField("Player " + i+" input name here");
        _CreatePlayers[i].addMouseListener(new MouseAdapter(){
            @Override
            public void mouseClicked(MouseEvent e){
                _CreatePlayers[finalI].setText("");
            }
        });
    }