concretecircle.java

一些基本的java程序源代码

package circledemo;

public class ConcreteCircle extends AbstractCircle{
	public ConcreteCircle(){}
	public ConcreteCircle(double radius){
		this.radius=radius;
	}
	public void render(){
		System.out.printf("画一个半径%f的实心圆\n",getRadius());
	}
}