第5次作业--对象的创建与使用

import java.util.*;

class Square {
 int length;
 int wide;
 int area;
 int perimeter;


 int getarea() {
  area = length * wide;
  System.out.println("面积是" + area);
  return area;
 }

 int getperimeter() {
  perimeter = length * 2 + wide * 2;
  System.out.println("周长是" + perimeter);
  return perimeter;
 }

}

public class Homework {
 public static void main(String[] args) {
  Square squ1 = new Square();
  System.out.println("输入长度：");
  Scanner in = new Scanner(System.in);
  squ1.length = in.nextIn

 

 

  System.out.println("输入宽度：");
  Scanner in1 = new Scanner(System.in);
  squ1.wide = in1.nextInt();
  squ1.getarea();
  squ1.getperimeter();