From 8214c8dd97a38b06959aae00ca678b521c4abef5 Mon Sep 17 00:00:00 2001
From: Grzegorz Piwowarek <gpiwowarek@gmail.com>
Date: Wed, 2 Aug 2017 00:05:37 +0200
Subject: [PATCH] Refactor

---
 .../main/java/com/baelding/rxjava/operator/toLength.java | 8 +-------
 .../baeldung/rxjava/RxJavaCustomOperatorUnitTest.java    | 9 +--------
 2 files changed, 2 insertions(+), 15 deletions(-)

diff --git a/rxjava/src/main/java/com/baelding/rxjava/operator/toLength.java b/rxjava/src/main/java/com/baelding/rxjava/operator/toLength.java
index 47398ddcb8..fa997b563d 100644
--- a/rxjava/src/main/java/com/baelding/rxjava/operator/toLength.java
+++ b/rxjava/src/main/java/com/baelding/rxjava/operator/toLength.java
@@ -11,12 +11,6 @@ public class toLength implements Transformer<String, Integer> {
 
     @Override
     public Observable<Integer> call(Observable<String> source) {
-
-        return source.map(new Func1<String, Integer>() {
-            @Override
-            public Integer call(String str) {
-                return str.length();
-            }
-        });
+        return source.map(String::length);
     }
 }
\ No newline at end of file
diff --git a/rxjava/src/test/java/com/baeldung/rxjava/RxJavaCustomOperatorUnitTest.java b/rxjava/src/test/java/com/baeldung/rxjava/RxJavaCustomOperatorUnitTest.java
index 0cc458c414..99ac0351be 100644
--- a/rxjava/src/test/java/com/baeldung/rxjava/RxJavaCustomOperatorUnitTest.java
+++ b/rxjava/src/test/java/com/baeldung/rxjava/RxJavaCustomOperatorUnitTest.java
@@ -96,14 +96,7 @@ public class RxJavaCustomOperatorUnitTest {
 
     @Test
     public void whenUseFunctionTransformer_thenSuccess() {
-        final Transformer<String, Integer> toLengthFn = source -> {
-            return source.map(new Func1<String, Integer>() {
-                @Override
-                public Integer call(String str) {
-                    return str.length();
-                }
-            });
-        };
+        final Transformer<String, Integer> toLengthFn = source -> source.map(String::length);
 
         final List<Integer> results = new ArrayList<Integer>();
         Observable.from(Arrays.asList("apple", "orange"))