call()和massege()报错是为什么?
package com.hehe;
public class CellPhone extends Telphone {
@Override
public void call(){
// TODO Auto-generated method stub
}
@Override
public void massege() {
// TODO Auto-generated method stub
}
}
package com.hehe;
public abstract class Telphone {
public abstract void call();
public abstract void massege();
}