mainclass.java

（1） 编写一个代表圆柱体的Cylinder类

package p4;
import p2.Point;
import p3.circle;
public class Mainclass
{   
    
	public static void main(String agrs[])
	{
		Point p=new Point(3,4);
		Point p1=new Point(3,4);
	    circle c=new circle(p,4);
		System.out.println("Point x="+p.getx()+"  y="+p.gety());
		System.out.println("circle of c is c.center=("+c.center.x+","+c.center.y+") the radiu of c is"+c.r);
		System.out.println("Relation of c(p,4) and c(p,5)"+c.relation(new circle(p,5)));
		System.out.println(p.toString());
		System.out.println(c.toString());
		
		
	}
}