separeted folders of java 9 flow API

src/main/java/com/nisum/java9Features/reactiveapi/asynchronous/Sample.java → src/main/java/com/nisum/java9Features/reactiveapi/rxjava/asynchronous/Sample.java

-package com.nisum.java9Features.reactiveapi.asynchronous;
+package com.nisum.java9Features.reactiveapi.rxjava.asynchronous;
 
 import io.reactivex.BackpressureStrategy;
 import io.reactivex.Flowable;

src/main/java/com/nisum/java9Features/reactiveapi/drop/Sample.java → src/main/java/com/nisum/java9Features/reactiveapi/rxjava/drop/Sample.java

-package com.nisum.java9Features.reactiveapi.drop;
+package com.nisum.java9Features.reactiveapi.rxjava.drop;
 
 import io.reactivex.BackpressureStrategy;
 import io.reactivex.Flowable;

src/main/java/com/nisum/java9Features/reactiveapi/error/Sample.java → src/main/java/com/nisum/java9Features/reactiveapi/rxjava/error/Sample.java

-package com.nisum.java9Features.reactiveapi.error;
+package com.nisum.java9Features.reactiveapi.rxjava.error;
 
 import io.reactivex.BackpressureStrategy;
 import io.reactivex.Flowable;

src/main/java/com/nisum/java9Features/reactiveapi/latest/Sample.java → src/main/java/com/nisum/java9Features/reactiveapi/rxjava/latest/Sample.java

-package com.nisum.java9Features.reactiveapi.latest;
+package com.nisum.java9Features.reactiveapi.rxjava.latest;
 
 import io.reactivex.BackpressureStrategy;
 import io.reactivex.Flowable;
@@ -7,7 +7,7 @@ import io.reactivex.schedulers.Schedulers;
 
 /**
  *
- * BackpressureStrategy.LATES
+ * BackpressureStrategy.LATEST
  * It is one of the backpressure strategy to handle the flow of the data;
  * It gives the latest data to the subscriber rather if any subscriber subscribes;
  */

src/main/java/com/nisum/java9Features/reactiveapi/rxjavaflowable/Sample.java → src/main/java/com/nisum/java9Features/reactiveapi/rxjava/rxjavaflowable/Sample.java

-package com.nisum.java9Features.reactiveapi.rxjavaflowable;
+package com.nisum.java9Features.reactiveapi.rxjava.rxjavaflowable;
 
 import io.reactivex.BackpressureStrategy;
 import io.reactivex.Flowable;

src/main/java/com/nisum/java9Features/reactiveapi/slowsubscriber/Sample.java → src/main/java/com/nisum/java9Features/reactiveapi/rxjava/slowsubscriber/Sample.java

-package com.nisum.java9Features.reactiveapi.slowsubscriber;
+package com.nisum.java9Features.reactiveapi.rxjava.slowsubscriber;
 
 import io.reactivex.BackpressureStrategy;
 import io.reactivex.Flowable;

src/main/java/com/nisum/java9Features/reactiveapi/synchronous/Sample.java → src/main/java/com/nisum/java9Features/reactiveapi/rxjava/synchronous/Sample.java

-package com.nisum.java9Features.reactiveapi.synchronous;
+package com.nisum.java9Features.reactiveapi.rxjava.synchronous;
 
 import io.reactivex.BackpressureStrategy;
 import io.reactivex.Flowable;

src/main/java/com/nisum/java9Features/reactiveapi/submissionpublisher/PrintResultSubscriber.java

 package com.nisum.java9Features.reactiveapi.submissionpublisher;
 
-import java.util.concurrent.Flow;
+import java.util.concurrent.Flow.Subscriber;
+import java.util.concurrent.Flow.Subscription;
 
 /**
  * creating the subscriber implementing the Flow.Subscriber given by jdk 9
  * here we are maintaining the flow of data as well using request method of Subscription Interface;;
  */
 
-public class PrintResultSubscriber implements Flow.Subscriber<String> {
-  private Flow.Subscription subscription;
+public class PrintResultSubscriber implements Subscriber<String> {
+  private Subscription subscription;
 
+
+  //initially user is asking for the no of initial data
   @Override
-  public void onSubscribe(Flow.Subscription subscription) {
+  public void onSubscribe(Subscription subscription) {
     System.out.println("subscribed...");
     this.subscription = subscription;
     subscription.request(5);