usingstatic.java

我在学习JAVA的讲义

class Point
{   final static Point origin=new Point(0,0);    //类变量、常量、坐标原点
    int x,y;
    Point (int x,int y)
    {   this.x=x;
        this.y=y;
    }
}
public class UsingStatic
{   public static void main(String args[])
    {   Point p1=new Point(10,20);    //构造Point类的对象p1
        System.out.println("类Point中的类变量：");
        System.out.println("("+Point.origin.x+","+Point.origin.y+")");    //访问类变量
        System.out.println("类Point中的类实例变量：");
        System.out.println("("+p1.x+","+p1.y+")");            //访问类对象变量x,y
    }
}