【Java每日一题】— —第二十四题：编程定义一个长方形类Rectangle

public class Java2{
    private int height;
    private int width;
    public Java2() {//无参构造方法
    }
    public Java2(int heingt,int width) {//有参构造方法
      this.height=heingt;
      this.width=width;
    }
    public int getHeight() {
      return height;
    }
    public void setHeight(int height) {
      this.height = height;
    }
    public int getWidth() {
      return width;
    }
    public void setWidth(int width) {
      this.width = width;
    }
    @Override
    public String toString() {
      // TODO Auto-generated method stub
      return "Rectangle [ width="+width+",height="+height;
    }
    public int zhouChang() {
      return 2*(height+width);
    }
    public int area() {
      return height*width;
    }
    public static void main(String[] args) {
       // 创建无参构造方法的对象
          Java2 rectangle1 = new Java2();
          rectangle1.setHeight(10);
          rectangle1.setWidth(8);
          System.out.println(rectangle1.toString());
          System.out.println("周长为：" + rectangle1.zhouChang());
          System.out.println("面积为：" + rectangle1.area());
 
          // 创建带参构造方法的对象
          Java2 rectangle2 = new Java2(12, 9);
          System.out.println(rectangle2.toString());
          System.out.println("周长为：" + rectangle2.zhouChang());
          System.out.println("面积为：" + rectangle2.area());
      }
  }