From ca4a4ec07b49912c8b6741074354da17fed65643 Mon Sep 17 00:00:00 2001
From: Joseph McCarthy <luckymikuhatsune@gmail.com>
Date: Fri, 1 Jan 2016 23:41:56 +0000
Subject: [PATCH 1/2] Created a Lambdas example for the callback pattern, using
 the same output of the traditional version. Have also added another unit test
 for issue #334

---
 .../com/iluwatar/callback/LambdasApp.java     | 19 +++++++++++++++++++
 .../java/com/iluwatar/callback/AppTest.java   | 18 ++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 callback/src/main/java/com/iluwatar/callback/LambdasApp.java

diff --git a/callback/src/main/java/com/iluwatar/callback/LambdasApp.java b/callback/src/main/java/com/iluwatar/callback/LambdasApp.java
new file mode 100644
index 000000000..aa57a0f7c
--- /dev/null
+++ b/callback/src/main/java/com/iluwatar/callback/LambdasApp.java
@@ -0,0 +1,19 @@
+package com.iluwatar.callback;
+
+/**
+ *
+ * This example generates the exact same output as {@link App} however the callback has been
+ * defined as a Lambdas expression.
+ *
+ */
+public class LambdasApp {
+
+  /**
+   * Program entry point
+   */
+  public static void main(String[] args){
+    Task task = new SimpleTask();
+    Callback c = () -> System.out.println("I'm done now.");
+    task.executeWith(c);
+  }
+}
diff --git a/callback/src/test/java/com/iluwatar/callback/AppTest.java b/callback/src/test/java/com/iluwatar/callback/AppTest.java
index 67046a175..28d6eaa1c 100644
--- a/callback/src/test/java/com/iluwatar/callback/AppTest.java
+++ b/callback/src/test/java/com/iluwatar/callback/AppTest.java
@@ -36,4 +36,22 @@ public class AppTest {
     assertEquals("Callback called twice", new Integer(2), callingCount);
 
   }
+
+  @Test
+  public void testWithLambdasExample() {
+    Callback callback = () -> callingCount++;
+
+    Task task = new SimpleTask();
+
+    assertEquals("Initial calling count of 0", new Integer(0), callingCount);
+
+    task.executeWith(callback);
+
+    assertEquals("Callback called once", new Integer(1), callingCount);
+
+    task.executeWith(callback);
+
+    assertEquals("Callback called twice", new Integer(2), callingCount);
+
+  }
 }

From e25ef1b0f89bb137e90351c10dabb5d374e8428e Mon Sep 17 00:00:00 2001
From: Joseph McCarthy <luckymikuhatsune@gmail.com>
Date: Sat, 2 Jan 2016 00:54:26 +0000
Subject: [PATCH 2/2] Check Style fixes #334

---
 callback/src/main/java/com/iluwatar/callback/LambdasApp.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/callback/src/main/java/com/iluwatar/callback/LambdasApp.java b/callback/src/main/java/com/iluwatar/callback/LambdasApp.java
index aa57a0f7c..19dd17eae 100644
--- a/callback/src/main/java/com/iluwatar/callback/LambdasApp.java
+++ b/callback/src/main/java/com/iluwatar/callback/LambdasApp.java
@@ -11,7 +11,7 @@ public class LambdasApp {
   /**
    * Program entry point
    */
-  public static void main(String[] args){
+  public static void main(String[] args) {
     Task task = new SimpleTask();
     Callback c = () -> System.out.println("I'm done now.");
     task.executeWith(c);