--- old/src/java.base/share/classes/sun/net/www/MimeEntry.java	2014-08-27 09:59:29.000000000 +0800
+++ new/src/java.base/share/classes/sun/net/www/MimeEntry.java	2014-08-27 09:59:29.000000000 +0800
@@ -288,7 +288,7 @@
 
         int action = getAction();
         if (action != MimeEntry.UNKNOWN) {
-            sb.append("action=" + actionKeywords[action]);
+            sb.append("action=").append(actionKeywords[action]);
             needSeparator = true;
         }
 
@@ -297,7 +297,7 @@
             if (needSeparator) {
                 sb.append(separator);
             }
-            sb.append("application=" + command);
+            sb.append("application=").append(command);
             needSeparator = true;
         }
 
@@ -305,7 +305,7 @@
             if (needSeparator) {
                 sb.append(separator);
             }
-            sb.append("icon=" + getImageFileName());
+            sb.append("icon=").append(getImageFileName());
             needSeparator = true;
         }
 
@@ -314,7 +314,7 @@
             if (needSeparator) {
                 sb.append(separator);
             }
-            sb.append("file_extensions=" + extensions);
+            sb.append("file_extensions=").append(extensions);
             needSeparator = true;
         }
 
@@ -323,7 +323,7 @@
             if (needSeparator) {
                 sb.append(separator);
             }
-            sb.append("description=" + description);
+            sb.append("description=").append(description);
         }
 
         return sb.toString();