求大神指点，button.addKeyListener(this)报错

Question

JLabel lblNewLabel_6 = new JLabel(new ImageIcon("img[2.PNG"));
lblNewLabel_6.setText("");
lblNewLabel_6.setBounds(249, 184, 44, 41);
panel_1.add(lblNewLabel_6);
this.addKeyListener(this);
button.addKeyListener(this);
}

@Override
public void keyTyped(KeyEvent e) {

}

@Override
public void keyPressed(KeyEvent e) {    //按下
    System.out.println("la");

}

Answer 1

我想添加监听器，按下键盘有反应