Question

What is the effect on a child class of writing a constructor in an abstract parent class?

Answer

Animal.class

public abstract class Animal {

  String name;

  public Animal(String name) {
    this.name = name;
  }

  abstract boolean born();
  abstract boolean die();

  public void setColour(){}
}

Horse.class

public class Horse extends Animal {

  String name;
  String colour;

  public Horse(String name, String colour) {
    super(name);
    this.name = name;
    this.colour = colour;
  }

  public Horse(String name) {
    this(name, "red");
  }

  boolean born() {
    return false;
  }

  boolean die() {
    return false;
  }

}