diff --git a/app/src/main/java/org/ntlab/developrx/JavaMainActivity.java b/app/src/main/java/org/ntlab/developrx/JavaMainActivity.java
index fd67971..efd03d6 100644
--- a/app/src/main/java/org/ntlab/developrx/JavaMainActivity.java
+++ b/app/src/main/java/org/ntlab/developrx/JavaMainActivity.java
@@ -7,10 +7,16 @@
  * Created by matsumoto_k on 2017/11/11.
  */
 public class JavaMainActivity extends AppCompatActivity {
+    JavaRxProcess rxProcess = new JavaRxProcess();
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main_java);
+
+        findViewById(R.id.flowable_btn).setOnClickListener(view -> {
+                    rxProcess.flowableReactiveStreams();
+                }
+        );
     }
 }