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

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rev 10521 : 8055723[core]: Replace concat String to append in StringBuilder parameters
Contributed-by: Otavio Santana <otaviojava@java.net>

@@ -500,11 +500,11 @@
         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());
         }
     }