// patterns/shapes/Shape.java

// (c)2017 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

package patterns.shapes;

public class Shape {

private static int counter = 0;

private int id = counter++;

@Override

public String toString() {

return

getClass().getSimpleName() + "[" + id + "]";

}

public void draw() {

System.out.println(this + " draw");

}

public void erase() {

System.out.println(this + " erase");

}

}