抽象输出面积System输出提示错误

Question

package xiaochengxu;import java.util.Scanner;public class mianjizhengfangxing extends mianji1 { Scanner zhengfangxing=new Scanner(System.in); System.out.print("请输入正方形的长："); int chang=zhengfangxing.nextInt(); System.out.print("请输入正方形的宽："); int kuan=zhengfangxing.nextInt(); @Override public  void mianji() { // TODO Auto-generated method stub int mianji=chang*kuan; System.out.println("正方形的面积为"+mianji); } @Override public  void zhouchang() { // TODO Auto-generated method stub int zhouchang=(chang+kuan)*2; System.out.println("正方形的面积为"+zhouchang); }}

Answer 1

你好歹把错误提示显示出来啊