diff --git a/app/src/main/java/org/ntlab/developrx/JavaMainActivity.java b/app/src/main/java/org/ntlab/developrx/JavaMainActivity.java
index e775591..37e4b67 100644
--- a/app/src/main/java/org/ntlab/developrx/JavaMainActivity.java
+++ b/app/src/main/java/org/ntlab/developrx/JavaMainActivity.java
@@ -15,9 +15,8 @@
         setContentView(R.layout.activity_main_java);
 
         findViewById(R.id.flowable_btn).setOnClickListener(view -> rxProcess.flowableReactiveStreams());
-
         findViewById(R.id.observable_btn).setOnClickListener(view -> rxProcess.observable());
-
         findViewById(R.id.just_btn).setOnClickListener(view -> rxProcess.just());
+        findViewById(R.id.fromarray_btn).setOnClickListener(view -> rxProcess.fromArray());
     }
 }
diff --git a/app/src/main/java/org/ntlab/developrx/JavaRxProcess.java b/app/src/main/java/org/ntlab/developrx/JavaRxProcess.java
index 3f8dd20..a2e5dd2 100644
--- a/app/src/main/java/org/ntlab/developrx/JavaRxProcess.java
+++ b/app/src/main/java/org/ntlab/developrx/JavaRxProcess.java
@@ -124,8 +124,16 @@
      * 引数のデータを通知するFLowableを作成
      * 引数は10個まで
      */
-    public void just(){
-        Flowable<String> flowable = Flowable.just("A","B","C","D","E","F","G","H","I","J");
+    public void just() {
+        Flowable<String> flowable = Flowable.just("A", "B", "C", "D", "E", "F", "G", "H", "I", "J");
+        flowable.subscribe(new DebugSubscriber<>());
+    }
+
+    /**
+     * 引数のデータを通知するFlowableを作成
+     */
+    public void fromArray() {
+        Flowable<String> flowable = Flowable.fromArray("A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K");
         flowable.subscribe(new DebugSubscriber<>());
     }
 }
diff --git a/app/src/main/res/layout/activity_main_java.xml b/app/src/main/res/layout/activity_main_java.xml
index bb4850c..97c0faf 100644
--- a/app/src/main/res/layout/activity_main_java.xml
+++ b/app/src/main/res/layout/activity_main_java.xml
@@ -33,6 +33,14 @@
             android:text="just"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/observable_btn" />
+
+        <Button
+            android:id="@+id/fromarray_btn"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="fromarray"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/just_btn" />
     </android.support.constraint.ConstraintLayout>
 
 </ScrollView>