这里为什么会提示call和message错误
package com.imooc;
public class SmartPhone extends Telphone {
@Override
public void call() {
// TODO Auto-generated method stub
System.out.println("通过语音打电话");
}
@Override
public void message() {
// TODO Auto-generated method stub
System.out.println("通过语音发短信");
}
}