feat: Add strategy pattern

Author: hyeoni90

src/main/java/com/hyeonah/javalabs/designpattern/strategy/Animal.java

@@ -0,0 +1,28 @@
+package com.hyeonah.javalabs.designpattern.strategy;
+
+import com.hyeonah.javalabs.designpattern.strategy.move.MovingStrategy;
+
+/**
+ * Created by hyeoni90 on 2021-03-03
+ */
+public class Animal {
+ private final String name;
+
+ private MovingStrategy movingStrategy;
+
+ public Animal(final String name) {
+ this.name = name;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void move() {
+ movingStrategy.move();
+ }
+
+ public void setMovingStrategy(final MovingStrategy movingStrategy) {
+ this.movingStrategy = movingStrategy;
+ }
+}

src/main/java/com/hyeonah/javalabs/designpattern/strategy/Bird.java

@@ -0,0 +1,11 @@
+package com.hyeonah.javalabs.designpattern.strategy;
+
+/**
+ * Created by hyeoni90 on 2021-03-03
+ */
+public class Bird extends Animal {
+
+ public Bird(final String name) {
+ super(name);
+ }
+}

src/main/java/com/hyeonah/javalabs/designpattern/strategy/Cat.java

@@ -0,0 +1,15 @@
+package com.hyeonah.javalabs.designpattern.strategy;
+
+/**
+ * Created by hyeoni90 on 2021-03-03
+ */
+public class Cat extends Animal {
+
+ public Cat(final String name) {
+ super(name);
+ }
+
+ public void cry() {
+ System.out.println("운다");
+ }
+}

src/main/java/com/hyeonah/javalabs/designpattern/strategy/Dog.java

@@ -0,0 +1,11 @@
+package com.hyeonah.javalabs.designpattern.strategy;
+
+/**
+ * Created by hyeoni90 on 2021-03-03
+ */
+public class Dog extends Animal {
+
+ public Dog(final String name) {
+ super(name);
+ }
+}

src/main/java/com/hyeonah/javalabs/designpattern/strategy/Fish.java

@@ -0,0 +1,11 @@
+package com.hyeonah.javalabs.designpattern.strategy;
+
+/**
+ * Created by hyeoni90 on 2021-03-03
+ */
+public class Fish extends Animal {
+
+ public Fish(final String name) {
+ super(name);
+ }
+}

src/main/java/com/hyeonah/javalabs/designpattern/strategy/Main.java

@@ -0,0 +1,50 @@
+package com.hyeonah.javalabs.designpattern.strategy;
+
+import com.hyeonah.javalabs.designpattern.strategy.move.Fly;
+import com.hyeonah.javalabs.designpattern.strategy.move.Swim;
+import com.hyeonah.javalabs.designpattern.strategy.move.Walk;
+
+/**
+ * Created by hyeoni90 on 2021-03-03
+ */
+public class Main {
+
+ public static void main(final String[] args) {
+// final Cat cat = new Cat("고양이");
+// final Dog dog = new Dog("강아지");
+// final Fish fish = new Fish("물고기");
+// final Bird bird = new Bird("새");
+//
+// cat.move();
+// dog.move();
+// fish.move();
+// bird.move();
+
+ // 두개의 차이가 뭘까?
+// final Animal cat = new Cat("고양이");
+ final Cat cat = new Cat("고양이");
+ cat.cry();
+
+ final Dog dog = new Dog("강아지");
+ final Fish fish = new Fish("물고기");
+ final Bird bird = new Bird("새");
+
+ cat.setMovingStrategy(new Fly());
+ System.out.print(cat.getName() + " ");
+ cat.move();
+
+ dog.setMovingStrategy(new Swim());
+ System.out.print(dog.getName() + " ");
+ dog.move();
+ dog.setMovingStrategy(new Walk());
+ dog.move();
+
+ fish.setMovingStrategy(new Fly());
+ System.out.print(fish.getName() + " ");
+ fish.move();
+
+ bird.setMovingStrategy(new Walk());
+ System.out.print(bird.getName() + " ");
+ bird.move();
+ }
+}

src/main/java/com/hyeonah/javalabs/designpattern/strategy/move/Fly.java

@@ -0,0 +1,11 @@
+package com.hyeonah.javalabs.designpattern.strategy.move;
+
+/**
+ * Created by hyeoni90 on 2021-03-03
+ */
+public class Fly implements MovingStrategy {
+ @Override
+ public void move() {
+ System.out.println("날아간다.");
+ }
+}

src/main/java/com/hyeonah/javalabs/designpattern/strategy/move/MovingStrategy.java

@@ -0,0 +1,6 @@
+package com.hyeonah.javalabs.designpattern.strategy.move;
+
+public interface MovingStrategy {
+
+ void move();
+}

src/main/java/com/hyeonah/javalabs/designpattern/strategy/move/Swim.java

@@ -0,0 +1,11 @@
+package com.hyeonah.javalabs.designpattern.strategy.move;
+
+/**
+ * Created by hyeoni90 on 2021-03-03
+ */
+public class Swim implements MovingStrategy {
+ @Override
+ public void move() {
+ System.out.println("헤엄친다.");
+ }
+}

src/main/java/com/hyeonah/javalabs/designpattern/strategy/move/Walk.java

@@ -0,0 +1,11 @@
+package com.hyeonah.javalabs.designpattern.strategy.move;
+
+/**
+ * Created by hyeoni90 on 2021-03-03
+ */
+public class Walk implements MovingStrategy {
+ @Override
+ public void move() {
+ System.out.println("걸어간다.");
+ }
+}