src/java.management/share/classes/sun/management/Agent.java

rev 10947 : 8055723: Replace concat String to append in StringBuilder parameters

@@ -497,11 +497,11 @@
         if (params == null || params.length == 0) {
             error(key);
         } else {
             StringBuilder message = new StringBuilder(params[0]);
             for (int i = 1; i < params.length; i++) {
-                message.append(" " + params[i]);
+                message.append(' ').append(params[i]);
             }
             error(key, message.toString());
         }
     }