#502 Replaced usages of System.out with logger.

layers/src/main/java/com/iluwatar/layers/CakeViewImpl.java

@@ -22,6 +22,9 @@
  */
 package com.iluwatar.layers;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 /**
  * 
  * View implementation for displaying cakes
@@ -29,6 +32,8 @@ package com.iluwatar.layers;
  */
 public class CakeViewImpl implements View {
 
+  private static final Logger LOGGER = LoggerFactory.getLogger(CakeViewImpl.class);
+
   private CakeBakingService cakeBakingService;
 
   public CakeViewImpl(CakeBakingService cakeBakingService) {
@@ -36,6 +41,6 @@ public class CakeViewImpl implements View {
   }
 
   public void render() {
-    cakeBakingService.getAllCakes().stream().forEach(cake -> System.out.println(cake));
+    cakeBakingService.getAllCakes().stream().forEach(cake -> LOGGER.info(cake.toString()));
   }
 }

layers/src/test/java/com/iluwatar/layers/StdOutTest.java

@@ -24,6 +24,8 @@ package com.iluwatar.layers;
 
 import org.junit.After;
 import org.junit.Before;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.PrintStream;