Derived Class Constructors: Calling the Base Class Constructor : Inheritance « Class Definition « Java Tutorial

1. Java Tutorial
2. Class Definition
3. Inheritance

class Animal {
  public Animal(String aType) {
    type = new String(aType);
  }
  public String toString() {
    return "This is a " + type;
  }
  private String type;
}
class Dog extends Animal {
  public Dog(String aName) {
    super("Dog"); 
    name = aName; 
    breed = "Unknown"; 
  }
  public Dog(String aName, String aBreed) {
    super("Dog"); 
    name = aName;
    breed = aBreed;
  }
  private String name; 
  private String breed;
}