From ec90ffc8a0fa1930001350aa3bc3c65fa364452f Mon Sep 17 00:00:00 2001
From: "shakeel.abbas" <shakeel.abbas@amadeus.com>
Date: Tue, 28 Aug 2018 15:10:35 +0400
Subject: [PATCH] https://issues.apache.org/jira/browse/TILES-599

---
 .../apache/tiles/preparer/factory/BasicPreparerFactory.java   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tiles-core/src/main/java/org/apache/tiles/preparer/factory/BasicPreparerFactory.java b/tiles-core/src/main/java/org/apache/tiles/preparer/factory/BasicPreparerFactory.java
index c9d46cde0..f7d581f4f 100644
--- a/tiles-core/src/main/java/org/apache/tiles/preparer/factory/BasicPreparerFactory.java
+++ b/tiles-core/src/main/java/org/apache/tiles/preparer/factory/BasicPreparerFactory.java
@@ -20,8 +20,8 @@
  */
 package org.apache.tiles.preparer.factory;
 
-import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 import org.apache.tiles.preparer.ViewPreparer;
 import org.apache.tiles.request.Request;
@@ -54,7 +54,7 @@ public class BasicPreparerFactory implements PreparerFactory {
      * Constructor.
      */
     public BasicPreparerFactory() {
-        this.preparers = new HashMap<String, ViewPreparer>();
+        this.preparers = new ConcurrentHashMap<String, ViewPreparer>;
     }