From 3a2484a123c38570d985992867441171eab02de1 Mon Sep 17 00:00:00 2001
From: LordBaryhobal <lordbaryhobal@gmail.com>
Date: Sun, 13 Oct 2024 18:22:53 +0200
Subject: [PATCH] added command pattern example

---
 src/learn/simple_command/Command.java         |  5 +++++
 src/learn/simple_command/ConcreteCommand.java | 14 ++++++++++++++
 src/learn/simple_command/Invoker.java         | 13 +++++++++++++
 src/learn/simple_command/Main.java            | 12 ++++++++++++
 src/learn/simple_command/Receiver.java        |  7 +++++++
 5 files changed, 51 insertions(+)
 create mode 100644 src/learn/simple_command/Command.java
 create mode 100644 src/learn/simple_command/ConcreteCommand.java
 create mode 100644 src/learn/simple_command/Invoker.java
 create mode 100644 src/learn/simple_command/Main.java
 create mode 100644 src/learn/simple_command/Receiver.java

diff --git a/src/learn/simple_command/Command.java b/src/learn/simple_command/Command.java
new file mode 100644
index 0000000..14dc34a
--- /dev/null
+++ b/src/learn/simple_command/Command.java
@@ -0,0 +1,5 @@
+package learn.simple_command;
+
+public interface Command {
+    void execute();
+}
diff --git a/src/learn/simple_command/ConcreteCommand.java b/src/learn/simple_command/ConcreteCommand.java
new file mode 100644
index 0000000..096d079
--- /dev/null
+++ b/src/learn/simple_command/ConcreteCommand.java
@@ -0,0 +1,14 @@
+package learn.simple_command;
+
+public class ConcreteCommand implements Command {
+    private Receiver receiver;
+
+    public ConcreteCommand(Receiver receiver) {
+        this.receiver = receiver;
+    }
+
+    @Override
+    public void execute() {
+        receiver.action();
+    }
+}
diff --git a/src/learn/simple_command/Invoker.java b/src/learn/simple_command/Invoker.java
new file mode 100644
index 0000000..b63e39c
--- /dev/null
+++ b/src/learn/simple_command/Invoker.java
@@ -0,0 +1,13 @@
+package learn.simple_command;
+
+public class Invoker {
+    private Command slot;
+
+    public void setSlot(Command slot) {
+        this.slot = slot;
+    }
+
+    public void buttonWasPushed() {
+        slot.execute();
+    }
+}
diff --git a/src/learn/simple_command/Main.java b/src/learn/simple_command/Main.java
new file mode 100644
index 0000000..3f3c933
--- /dev/null
+++ b/src/learn/simple_command/Main.java
@@ -0,0 +1,12 @@
+package learn.simple_command;
+
+public class Main {
+    public static void main(String[] args) {
+        Invoker invoker = new Invoker();
+        Receiver receiver = new Receiver();
+        Command command = new ConcreteCommand(receiver);
+        invoker.setSlot(command);
+
+        invoker.buttonWasPushed();
+    }
+}
diff --git a/src/learn/simple_command/Receiver.java b/src/learn/simple_command/Receiver.java
new file mode 100644
index 0000000..99cd199
--- /dev/null
+++ b/src/learn/simple_command/Receiver.java
@@ -0,0 +1,7 @@
+package learn.simple_command;
+
+public class Receiver {
+    public void action() {
+        System.out.println("Do my action");
+    }
+}