--- old/src/share/classes/sun/font/SunLayoutEngine.java	2012-06-18 17:07:15.064074220 +0400
+++ new/src/share/classes/sun/font/SunLayoutEngine.java	2012-06-18 17:07:10.856753474 +0400
@@ -35,6 +35,7 @@
 import java.lang.ref.SoftReference;
 import java.util.HashMap;
 import java.util.Locale;
+import java.util.concurrent.ConcurrentHashMap;
 
 /*
  * different ways to do this
@@ -129,9 +130,10 @@
 
   // !!! don't need this unless we have more than one sun layout engine...
     public LayoutEngine getEngine(LayoutEngineKey key) {
-        HashMap cache = (HashMap)cacheref.get();
+        // Using ConcurrentHashMap instead of HashMap to resolve 7027300
+        ConcurrentHashMap cache = (ConcurrentHashMap)cacheref.get();
         if (cache == null) {
-            cache = new HashMap();
+            cache = new ConcurrentHashMap();
             cacheref = new SoftReference(cache);
         }