Java语言程序设计课程实验题目 第五次实验

1. 在IDE中输入并观察以下代码，分析该段程序的作用。

public abstract class GeometricObject {

    private String color = "white";

    private boolean filled;

    private java.util.Date dateCreated;

   

    protected GeometricObject(){

        dateCreated = new java.util.Date();

    }

   

    protected GeometricObject(String colr, boolean filled){   

        dateCreated = new java.util.Date();

        this.color = color;

        this.filled = filled;

    }

   

    public String getColor(){

        return color;

    }

   

    public void setColor(String color){

        this.color = color;

    }

   

    public boolean isFilled(){

  &