rectangle.java

java的小程序

public class Rectangle extends GeometricObject
{
  protected double width;
  protected double height;
  public Rectangle()
  {
    this(1.0, 1.0, "white", 1.0);
  }
  public Rectangle(double width, double height)
  {
    this.width = width;
    this.height = height;
  }
  public Rectangle(double width, double height,
    String color, double weight)
  {
    super(color, weight);
    this.width = width;
    this.height = height;
  }
  public double getWidth()
  {
    return width;
  }
  public void setWidth(double width)
  {
    this.width = width;
  }
  public double getHeight()
  {
    return height;
  }
  public void setHeight(double height)
  {
    this.height = height;
  }
  public double findArea()
  {
    return width*height;
  }
  public double findPerimeter()
  {
    return 2*(width + height);
  }
  public boolean equals(Rectangle rectangle)
  {
    return (width == rectangle.getWidth()) &&
      (height ==  rectangle.getHeight());
  }
  public String toString()
  {
    return "Rectangle ";
  }
}