关于#java#的问题，请各位专家解答！写不出来了

Question

最后要按矩形的面积从小到大排序输出它的长，宽，面积，周长。

public class rectengle {
    private double length ;

    private double width ;
      private static int numberOfrectengles =0;

      public rectengle() {
        numberOfrectengles++;
      }

      public rectengle(double newlength,double newwidth) {
        length = newlength;
        width = newwidth;
        numberOfrectengles++;
      }

      public double getlength() {
        return length;
      }

      public void setlength(double newlength) {
        length = (newlength >= 0) ? newlength : 0;
      }
      
      public double getwidth() {
            return width;
      }

      public void setwidth(double newwidth) {
            width = (newwidth >= 0) ? newwidth : 0;
      }
      public static int getNumberOfRectengles() {
        return numberOfrectengles;
      }

      public double getPerimeter() {
            return (length+width)/2;
          }
      public double getArea() {
        return length*width;
      }
public static void main(String[] args) {
     rectengle[] rectengleArray;
     
     rectengleArray= createRectengleArray();
     
    printRectengleArray(rectengleArray);
  
  }

  public static rectengle[]createRectengleArray () {
      rectengle[] rectengleArray =  new rectengle[10];
     
    for (int i = 0; i < rectengleArray.length; i++) {
        rectengleArray[i] = 
        new rectengle(Math.random() * 100);
    }

    return rectengleArray;
    
  }
  public static void printRectengleArray(
          rectengle [] rectengleArray) {
    System.out.printf("%-30s%-15s\n", "length","width ","Area","perimeter");
    for (int i = 0; i < rectengleArray.length; i++) {
      System.out.printf("%-30f%-15f\n", rectengleArray[i].getlength(),
              rectengleArray[i].getwidth(),
              rectengleArray [i].getArea(),
              rectengleArray[i].getPerimeter());
    }
  }
}

这步有什么错误呢

Answer 1

rectengle类构造函数里缺少了个一个参数有参构造