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ThusharaXThusharaX
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Merge pull request #29 from ShanukaPrabodha/Design-Pattern-Contd
Implementing strategy design pattern
2 parents eef5843 + 835c81f commit 6e13a76

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‎Basics/Design Pattern/strategy/Duck.java

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package design.pattern.stratergy;
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public abstract class Duck {
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IFlyBehaviour flyBehaviour;
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IQuackBehaviour quackBehaviour;
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public abstract void display();
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public void performFly(){
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flyBehaviour.fly();
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}
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public void performQuack(){
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quackBehaviour.quack();
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}
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public void swim(){
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System.out.println("All ducks float even Decoy");
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}
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public void setFlyBehaviour(IFlyBehaviour flyBehaviour) {
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this.flyBehaviour = flyBehaviour;
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}
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public void setQuackBehaviour(IQuackBehaviour quackBehaviour) {
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this.quackBehaviour = quackBehaviour;
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}
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}

‎Basics/Design Pattern/strategy/FlyNoWay.java

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package design.pattern.stratergy;
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public class FlyNoWay implements IFlyBehaviour{
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@Override
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public void fly() {
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System.out.println("I can't fly");
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}
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}
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‎Basics/Design Pattern/strategy/FlyRocketPower.java

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package design.pattern.stratergy;
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public class FlyRocketPower implements IFlyBehaviour{
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@Override
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public void fly() {
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System.out.println("I am flying with a rocket");
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}
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}
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‎Basics/Design Pattern/strategy/FlyWithWings.java

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package design.pattern.stratergy;
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public class FlyWithWings implements IFlyBehaviour{
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@Override
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public void fly() {
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System.out.println("I am flying with wings");
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}
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}

‎Basics/Design Pattern/strategy/IFlyBehaviour.java

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package design.pattern.stratergy;
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public interface IFlyBehaviour {
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public void fly();
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}
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‎Basics/Design Pattern/strategy/IQuackBehaviour.java

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package design.pattern.stratergy;
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public interface IQuackBehaviour {
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public void quack();
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}
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‎Basics/Design Pattern/strategy/ModelDuck.java

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package design.pattern.stratergy;
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public class ModelDuck extends Duck{
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public ModelDuck() {
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quackBehaviour = new Quack();
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flyBehaviour = new FlyNoWay();
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}
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@Override
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public void display() {
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System.out.println("I am a model Duck");
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}
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}

‎Basics/Design Pattern/strategy/ModelQuack.java

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package design.pattern.stratergy;
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public class ModelQuack implements IQuackBehaviour{
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@Override
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public void quack() {
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System.out.println("Quack Model duck");
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}
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}

‎Basics/Design Pattern/strategy/MollardDuck.java

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package design.pattern.stratergy;
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public class MollardDuck extends Duck{
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public MollardDuck() {
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quackBehaviour = new Quack();
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flyBehaviour = new FlyWithWings();
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}
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@Override
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public void display() {
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System.out.println("I am a real Mollard Duck.");
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}
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}

‎Basics/Design Pattern/strategy/Quack.java

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package design.pattern.stratergy;
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public class Quack implements IQuackBehaviour{
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@Override
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public void quack() {
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System.out.println("Quack..Quack...");
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}
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}
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‎Basics/Design Pattern/strategy/TestDuck.java

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package design.pattern.stratergy;
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public class TestDuck {
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/**
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* @param args
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*/
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public static void main(String[] args) {
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System.out.println("Start Mollard Duck");
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System.out.println("==================");
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Duck mollard = new MollardDuck();
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mollard.performFly();
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mollard.performQuack();
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System.out.println("Start Model Duck");
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System.out.println("==================");
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Duck model = new ModelDuck();
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model.performFly();
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model.setFlyBehaviour(new FlyRocketPower());
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model.performFly();
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model.performQuack();
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model.setQuackBehaviour(new ModelQuack());
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model.performQuack();
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}
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}

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