java :JButton.addActionListener(new ActionListener()为啥没有生效? 时间：2026-04-29 01:51:00 浏览：801次 btnn.addActionListener=new ActionListener(){ public void actionPerfomes(ActionEvent event){ //这里的方法名称拼写错了，应该是 public void actionPerformed String s=input.getText(); output.setText("hello"+s); } 标签：java,JButton,addActionListener
