From f2fb3f7e47ffcdebaaf6ea0574b71d52503efb3b Mon Sep 17 00:00:00 2001
From: LordBaryhobal <lordbaryhobal@gmail.com>
Date: Fri, 4 Oct 2024 14:03:45 +0200
Subject: [PATCH] added course decorator example

---
 src/learn/simple_decorator/Component.java       |  5 +++++
 .../simple_decorator/ConcreteComponent.java     |  8 ++++++++
 .../simple_decorator/ConcreteDecoratorA.java    | 13 +++++++++++++
 .../simple_decorator/ConcreteDecoratorB.java    | 17 +++++++++++++++++
 src/learn/simple_decorator/Decorator.java       | 14 ++++++++++++++
 src/learn/simple_decorator/Main.java            | 11 +++++++++++
 6 files changed, 68 insertions(+)
 create mode 100644 src/learn/simple_decorator/Component.java
 create mode 100644 src/learn/simple_decorator/ConcreteComponent.java
 create mode 100644 src/learn/simple_decorator/ConcreteDecoratorA.java
 create mode 100644 src/learn/simple_decorator/ConcreteDecoratorB.java
 create mode 100644 src/learn/simple_decorator/Decorator.java
 create mode 100644 src/learn/simple_decorator/Main.java

diff --git a/src/learn/simple_decorator/Component.java b/src/learn/simple_decorator/Component.java
new file mode 100644
index 0000000..718ede7
--- /dev/null
+++ b/src/learn/simple_decorator/Component.java
@@ -0,0 +1,5 @@
+package learn.simple_decorator;
+
+public interface Component {
+    void operation();
+}
diff --git a/src/learn/simple_decorator/ConcreteComponent.java b/src/learn/simple_decorator/ConcreteComponent.java
new file mode 100644
index 0000000..e0edc3b
--- /dev/null
+++ b/src/learn/simple_decorator/ConcreteComponent.java
@@ -0,0 +1,8 @@
+package learn.simple_decorator;
+
+public class ConcreteComponent implements Component {
+    @Override
+    public void operation() {
+        System.out.println("Concrete operation");
+    }
+}
diff --git a/src/learn/simple_decorator/ConcreteDecoratorA.java b/src/learn/simple_decorator/ConcreteDecoratorA.java
new file mode 100644
index 0000000..58c015a
--- /dev/null
+++ b/src/learn/simple_decorator/ConcreteDecoratorA.java
@@ -0,0 +1,13 @@
+package learn.simple_decorator;
+
+public class ConcreteDecoratorA extends Decorator {
+    public ConcreteDecoratorA(Component component) {
+        super(component);
+    }
+
+    @Override
+    public void operation() {
+        System.out.println("I am adding some new responsibilities here.");
+        super.operation();
+    }
+}
diff --git a/src/learn/simple_decorator/ConcreteDecoratorB.java b/src/learn/simple_decorator/ConcreteDecoratorB.java
new file mode 100644
index 0000000..20c1472
--- /dev/null
+++ b/src/learn/simple_decorator/ConcreteDecoratorB.java
@@ -0,0 +1,17 @@
+package learn.simple_decorator;
+
+public class ConcreteDecoratorB extends Decorator {
+    public ConcreteDecoratorB(Component component) {
+        super(component);
+    }
+
+    @Override
+    public void operation() {
+        addedBehavior();
+        super.operation();
+    }
+
+    private void addedBehavior() {
+        System.out.println("I am adding some new behavior here.");
+    }
+}
diff --git a/src/learn/simple_decorator/Decorator.java b/src/learn/simple_decorator/Decorator.java
new file mode 100644
index 0000000..4be0f2e
--- /dev/null
+++ b/src/learn/simple_decorator/Decorator.java
@@ -0,0 +1,14 @@
+package learn.simple_decorator;
+
+public abstract class Decorator implements Component {
+    private Component component;
+
+    public Decorator(Component component) {
+        this.component = component;
+    }
+
+    @Override
+    public void operation() {
+        component.operation();
+    }
+}
diff --git a/src/learn/simple_decorator/Main.java b/src/learn/simple_decorator/Main.java
new file mode 100644
index 0000000..4cd82dd
--- /dev/null
+++ b/src/learn/simple_decorator/Main.java
@@ -0,0 +1,11 @@
+package learn.simple_decorator;
+
+public class Main {
+    public static void main(String[] args) {
+        Component component = new ConcreteComponent();
+        component = new ConcreteDecoratorB(component);
+        component = new ConcreteDecoratorA(component);
+
+        component.operation();
+    }
+}