Write the MainKingdom Class with a main method that instantiates Human. The hierarchy is human, mammal, chordats animal kingdom. (Note: sub classes and super classes).

public String toString() returns the object name along with a list of where it is in the classification of living organisms. For instance, the method on an object named Ricky of the class Raccoon, should return something like Ricky (Raccoon, Mammal, Chordata, Animal Kingdom)

package animal; public class Human extends Mammal { //constructor  public Human() { } public void bendThumb() { System.out.println(getName() + " is bending their thumbs"); } @Override public String toString() { return super.toString() + ", Human"; } } 

package animal; public class Mammal extends Chordata { public void drinkMilk() { System.out.println(super.getName() + " is drinking milk"); } @Override public String toString() { return super.toString() + ", Mammal"; } }

package animal; public class Chordata extends AnimalKingdom { @Override public String toString() //Ricky(Raccoon, Mammal, Animal Kingdom)  { return super.toString() + ", Chordata"; } }

package animal; public class AnimalKingdom { private String name; private String animalType; public AnimalKingdom(String name, String animalType) { this.name = name; this.animalType = animalType; } AnimalKingdom() { } public String getName() { return name; } public String getAnimalType() { return animalType; } @Override public String toString() //Ricky(Raccoon, Chordata, Mammal, Animal Kingdom)  { return name + "(" + getAnimalType() + ", Mammal, Chordata, Animal Kingdom)"; } }