请高手指点

Question

txf.addKeyListener(new KeyListener(){public void keyPressed(KeyEvent e){
txa.setText(" ");
txa.append("keyPressed() called\n");}
});
txf.addKeyListener(new KeyListener(){public void keyReleased(KeyEvent e){
txa.append("keyReleased() called\n");}
});
txf.addKeyListener(new KeyListener(){public void keyTyped(KeyEvent e){
txa.append("keyTyped() called\n");}
});改成：
        txf.addKeyListener(new KeyListener(){
            public void keyPressed(KeyEvent e){
            txa.setText(" ");
            txa.append("keyPressed() called\n");}
            
            public void keyReleased(KeyEvent e){
                txa.append("keyReleased() called\n");}
        
            public void keyTyped(KeyEvent e){
                txa.append("keyTyped() called\n");}
        });