// polymorphism/PolyConstructors.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.
// Constructors and polymorphism
// don't produce what you might expect

class Glyph {
 void draw() { System.out.println("Glyph.draw()"); }
 Glyph() {
 System.out.println("Glyph() before draw()");
 draw();
 System.out.println("Glyph() after draw()");
 }
}

class RoundGlyph extends Glyph {
 private int radius = 1;
 RoundGlyph(int r) {
 radius = r;
 System.out.println(
 "RoundGlyph.RoundGlyph(), radius = " + radius);
 }
 @Override
 void draw() {
 System.out.println(
 "RoundGlyph.draw(), radius = " + radius);
 }
}

public class PolyConstructors {
 public static void main(String[] args) {
 new RoundGlyph(5);
 }
}
/* Output:
Glyph() before draw()
RoundGlyph.draw(), radius = 0
Glyph() after draw()
RoundGlyph.RoundGlyph(), radius = 5
*/