Pigeon.java from the Interfaces example project

Pigeon.java

package flying;

import flying.Flying;
import flying.Coordinate;

public class Pigeon implements Flying {
	public String name;
	public int age;
	public int weight;
	public boolean isFlyingRightNow = false; //INTERFACE

	public Pigeon(String name) {
		age = 0;
		this.name = name;
		weight = 5;
		System.out.println("A new pigeon is born, its called " + name);
	}

	public Pigeon(String name, int age, boolean inFlight){
		this.age = age;
		this.name = name;
		System.out.println("A new pigeon shows up, its called " + name);
	}

	void chirp(String message) {
		System.out.println(this.name.toUpperCase() + ": " + message);
	}

	public void eat(){
		chirp("Eating right now");
		weight = weight + 1;
	}

	public void takeShit() { //Interface
		chirp("Just took a shit");
		weight = weight - 1;
	}

	void takeOff() { //Interface
		takeShit();
		chirp("I hate the ground");
		isFlyingRightNow = true;
	}

	void land() { //Interface
		chirp("I'm tired as fuck");
		isFlyingRightNow = false;
		eat();
	}

	public void fly(Coordinate c){
		takeOff();
		chirp("I love flying!");
		weight = weight - 1;
		land();
	}
}