graphicobjct.java

Java面向对象编程(随书配套源代码) 阐述了面向对象编程的思想

package chapter7;
public  abstract class GraphicObjct 
{
    public int x,y;
    public void moveTo(int newX,int newY)
    {
    	//此处，省略具体方法实现
    }
    public abstract void draw();
}