geometricobject.java

java的小程序

public abstract class GeometricObject
{
  protected String color;
  protected double weight;
  protected GeometricObject()
  {
    color = "white";
    weight = 1.0;
  }
  protected GeometricObject(String color, double weight)
  {
    this.color = color;
    this.weight = weight;
  }
  public String getColor()
  {
    return color;
  }
  public void setColor(String color)
  {
    this.color = color;
  }
  public double getWeight()
  {
    return weight;
  }
  public void setWeight(double weight)
  {
    this.weight = weight;
  }
  public abstract double findArea();
  public abstract double findPerimeter();
}