From 65fa376887740ecab6b29254d6f5aaff37bfd796 Mon Sep 17 00:00:00 2001
From: Alejandro Gervasio <electricalweb@yahoo.com.ar>
Date: Fri, 17 Aug 2018 19:50:13 -0300
Subject: [PATCH] BAEL #4987 - Java Constructors vs Static Factory Methods
 (#4987)

* Initial Commit

* Update User.java

* Update UserUnitTest.java

* Update User.java - UserUnitTest.java

* Update User.java
---
 .../constructorsstaticfactorymethods/entities/User.java         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core-java/src/main/java/com/baeldung/constructorsstaticfactorymethods/entities/User.java b/core-java/src/main/java/com/baeldung/constructorsstaticfactorymethods/entities/User.java
index ec7bf6b5fa..4036b622c6 100644
--- a/core-java/src/main/java/com/baeldung/constructorsstaticfactorymethods/entities/User.java
+++ b/core-java/src/main/java/com/baeldung/constructorsstaticfactorymethods/entities/User.java
@@ -8,7 +8,7 @@ import java.util.logging.SimpleFormatter;
 
 public class User {
 
-    private static User instance = null;
+    private static volatile User instance = null;
     private static final Logger LOGGER = Logger.getLogger(User.class.getName());
     private final String name;
     private final String email;