From 31c65f649ad38bee6bb0b14c0e14188cdd6283fc Mon Sep 17 00:00:00 2001
From: Tomasz Lelek <tomasz.lelek@allegrogroup.com>
Date: Wed, 25 Jan 2017 19:30:06 +0100
Subject: [PATCH] BAEL-614 java/kotlin interop

---
 .../kotlin/com/baeldung/kotlin/ItemService.kt   |  6 +++++-
 .../baeldung/kotlin/MathematicsOperations.kt    |  7 +++++++
 .../baeldung/kotlin/JavaCallToKotlinTest.java   | 17 +++++++++++++++++
 3 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 kotlin/src/main/kotlin/com/baeldung/kotlin/MathematicsOperations.kt
 create mode 100644 kotlin/src/test/java/com/baeldung/kotlin/JavaCallToKotlinTest.java

diff --git a/kotlin/src/main/kotlin/com/baeldung/kotlin/ItemService.kt b/kotlin/src/main/kotlin/com/baeldung/kotlin/ItemService.kt
index 96e297115b..88de1aa9be 100644
--- a/kotlin/src/main/kotlin/com/baeldung/kotlin/ItemService.kt
+++ b/kotlin/src/main/kotlin/com/baeldung/kotlin/ItemService.kt
@@ -24,13 +24,17 @@ class ItemManager(val categoryId: String, val dbConnection: String) {
     fun makeAnalyisOfCategory(catId: String): Unit {
         val result = if (catId == "100") "Yes" else "No"
         println(result)
-
+        `object`()
     }
 
     fun sum(a: Int, b: Int): Int {
         return a + b
     }
 
+    fun `object`(): String {
+        return "this is object"
+    }
+
 }
 
 fun main(args: Array<String>) {
diff --git a/kotlin/src/main/kotlin/com/baeldung/kotlin/MathematicsOperations.kt b/kotlin/src/main/kotlin/com/baeldung/kotlin/MathematicsOperations.kt
new file mode 100644
index 0000000000..924f9d2323
--- /dev/null
+++ b/kotlin/src/main/kotlin/com/baeldung/kotlin/MathematicsOperations.kt
@@ -0,0 +1,7 @@
+package com.baeldung.kotlin
+
+class MathematicsOperations {
+    fun addTwoNumbers(a: Int, b: Int): Int {
+        return a + b
+    }
+}
\ No newline at end of file
diff --git a/kotlin/src/test/java/com/baeldung/kotlin/JavaCallToKotlinTest.java b/kotlin/src/test/java/com/baeldung/kotlin/JavaCallToKotlinTest.java
new file mode 100644
index 0000000000..cfad7cefd4
--- /dev/null
+++ b/kotlin/src/test/java/com/baeldung/kotlin/JavaCallToKotlinTest.java
@@ -0,0 +1,17 @@
+package com.baeldung.kotlin;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class JavaCallToKotlinTest {
+    @Test
+    public void givenKotlinClass_whenCallFromJava_shouldProduceResults() {
+        //when
+        int res = new MathematicsOperations().addTwoNumbers(2, 4);
+
+        //then
+        assertEquals(6, res);
+
+    }
+}