From b1a3dfa15089e8d329098d987b1efaa980187118 Mon Sep 17 00:00:00 2001
From: kamaci <furkankamaci@gmail.com>
Date: Sat, 24 Nov 2018 22:57:47 +0300
Subject: [PATCH] Double-checked locking bug is fixed.

---
 .../stanbol/commons/testing/jarexec/JarExecutor.java      | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/commons/testing/jarexec/src/main/java/org/apache/stanbol/commons/testing/jarexec/JarExecutor.java b/commons/testing/jarexec/src/main/java/org/apache/stanbol/commons/testing/jarexec/JarExecutor.java
index 03c2a884b..0a96d1ce4 100644
--- a/commons/testing/jarexec/src/main/java/org/apache/stanbol/commons/testing/jarexec/JarExecutor.java
+++ b/commons/testing/jarexec/src/main/java/org/apache/stanbol/commons/testing/jarexec/JarExecutor.java
@@ -72,13 +72,9 @@ public int getServerPort() {
         return serverPort;
     }
 
-    public static JarExecutor getInstance(Properties config) throws ExecutorException {
+    public synchronized static JarExecutor getInstance(Properties config) throws ExecutorException {
         if (instance == null) {
-            synchronized (JarExecutor.class) {
-                if (instance == null) {
-                    instance = new JarExecutor(config);
-                }
-            }
+            instance = new JarExecutor(config);
         }
         return instance;
     }