From 51f5d352c69a4775a9cee70702a5b066623cd57e Mon Sep 17 00:00:00 2001
From: LordBaryhobal <lordbaryhobal@gmail.com>
Date: Mon, 11 Nov 2024 10:28:35 +0100
Subject: [PATCH] added strategy example

---
 .../simple_strategy/ConcreteStrategyA.java      |  8 ++++++++
 .../simple_strategy/ConcreteStrategyB.java      |  8 ++++++++
 src/learn/simple_strategy/Context.java          | 17 +++++++++++++++++
 src/learn/simple_strategy/Main.java             | 11 +++++++++++
 src/learn/simple_strategy/Strategy.java         |  5 +++++
 5 files changed, 49 insertions(+)
 create mode 100644 src/learn/simple_strategy/ConcreteStrategyA.java
 create mode 100644 src/learn/simple_strategy/ConcreteStrategyB.java
 create mode 100644 src/learn/simple_strategy/Context.java
 create mode 100644 src/learn/simple_strategy/Main.java
 create mode 100644 src/learn/simple_strategy/Strategy.java

diff --git a/src/learn/simple_strategy/ConcreteStrategyA.java b/src/learn/simple_strategy/ConcreteStrategyA.java
new file mode 100644
index 0000000..552b561
--- /dev/null
+++ b/src/learn/simple_strategy/ConcreteStrategyA.java
@@ -0,0 +1,8 @@
+package learn.simple_strategy;
+
+public class ConcreteStrategyA implements Strategy {
+    @Override
+    public void algorithm() {
+        System.out.println("nice strategy A");
+    }
+}
diff --git a/src/learn/simple_strategy/ConcreteStrategyB.java b/src/learn/simple_strategy/ConcreteStrategyB.java
new file mode 100644
index 0000000..1b8ca92
--- /dev/null
+++ b/src/learn/simple_strategy/ConcreteStrategyB.java
@@ -0,0 +1,8 @@
+package learn.simple_strategy;
+
+public class ConcreteStrategyB implements Strategy {
+    @Override
+    public void algorithm() {
+        System.out.println("nice strategy B");
+    }
+}
diff --git a/src/learn/simple_strategy/Context.java b/src/learn/simple_strategy/Context.java
new file mode 100644
index 0000000..ad97da8
--- /dev/null
+++ b/src/learn/simple_strategy/Context.java
@@ -0,0 +1,17 @@
+package learn.simple_strategy;
+
+public class Context {
+    private Strategy currentStrategy;
+
+    public Context(Strategy currentStrategy) {
+        this.currentStrategy = currentStrategy;
+    }
+
+    public void setCurrentStrategy(Strategy currentStrategy) {
+        this.currentStrategy = currentStrategy;
+    }
+
+    public void doSomeJob() {
+        currentStrategy.algorithm();
+    }
+}
diff --git a/src/learn/simple_strategy/Main.java b/src/learn/simple_strategy/Main.java
new file mode 100644
index 0000000..8054d80
--- /dev/null
+++ b/src/learn/simple_strategy/Main.java
@@ -0,0 +1,11 @@
+package learn.simple_strategy;
+
+public class Main {
+    public static void main(String[] args) {
+        Context context = new Context(new ConcreteStrategyB());
+
+        context.doSomeJob();
+        context.setCurrentStrategy(new ConcreteStrategyA());
+        context.doSomeJob();
+    }
+}
diff --git a/src/learn/simple_strategy/Strategy.java b/src/learn/simple_strategy/Strategy.java
new file mode 100644
index 0000000..7d2efb3
--- /dev/null
+++ b/src/learn/simple_strategy/Strategy.java
@@ -0,0 +1,5 @@
+package learn.simple_strategy;
+
+public interface Strategy {
+    void algorithm();
+}