From: Yegor Kozlov <yegor@apache.org>
Date: Sat, 19 Oct 2013 14:12:15 +0000 (+0000)
Subject: Patch 55611 - Performance improvement in DateUtil.isADateFormat(int, String)
X-Git-Tag: REL_3_10_FINAL~88
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=e5387b1e72a8d1582a7d12b5a19c2d1d0e9288f2;p=poi.git

Patch 55611 - Performance improvement in DateUtil.isADateFormat(int, String)

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1533768 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/src/java/org/apache/poi/ss/usermodel/DateUtil.java b/src/java/org/apache/poi/ss/usermodel/DateUtil.java
index 49b5ad12d8..6bd832dfbb 100644
--- a/src/java/org/apache/poi/ss/usermodel/DateUtil.java
+++ b/src/java/org/apache/poi/ss/usermodel/DateUtil.java
@@ -299,7 +299,7 @@ public class DateUtil {
      * @see #isInternalDateFormat(int)
      */
 
-    public static boolean isADateFormat(int formatIndex, String formatString) {
+    public static synchronized boolean isADateFormat(int formatIndex, String formatString) {
        
          if (formatString != null && formatIndex == lastFormatIndex && formatString.equals(lastFormatString)) {
            		return cached;