public class Point3D extends Point
{
	int z;
	
	public Point3D()
	{
		super();
		z=0;
	}

	public Point3D(int a,int b,int c)
	{
		super(a,b);
		z=c;
	}

	
	public void print()
	{
		System.out.println(x+","+y+","+z);
	}
}