The method zhouchang() of type yuan must override or implement a supertype method

源自：10-3 Java 中的抽象类

The method zhouchang() of type yuan must override or implement a supertype method

package duotaichouxianglei;

public class yuan extends tuxing {

	public void zhouchang() {
		// TODO Auto-generated method stub
		System.out.println("yuandezhouchang");

	}

	@Override
	public void mianji() {
		// TODO Auto-generated method stub

	}

}

提问者：qq_宇_35 2017-08-04 17:45

个回答

qq_这里有风_0

2017-08-05 12:55:26

已采纳

定义好抽象父类保存下即可。

0
qq_非常幸运_04390770

2017-08-04 18:09:44

package duotaichouxianglei;

public class yuan extends tuxing {
     float r;
    public void zhouchang() {
        // TODO Auto-generated method stub
        zhouchang = 3.14*2*r;
        System.out.println("yuandezhouchang");

    }

    @Override
    public void mianji() {
        // TODO Auto-generated method stub

    }
public void yuan(float r){
    r = r;
   }
}

0
qq__损色__04170649

2017-08-04 18:01:38

？？？

1