求帮助,我创建了个抽象类然后为什么继承不了?
package com.oiyaw; public class Sanjiaoxing extends Shape { @Override public void zhouchagn() { // TODO Auto-generated method stub } @Override public void mianji() { // TODO Auto-generated method stub } } 帮我看下哪里出问题了,我就创建了哥抽象类 然后继承了 咋就变红了?