Index: org/apache/tomcat/util/modeler/AttributeInfo.java
===================================================================
--- org/apache/tomcat/util/modeler/AttributeInfo.java	(revision 831814)
+++ org/apache/tomcat/util/modeler/AttributeInfo.java	(working copy)
@@ -146,7 +146,7 @@
      */
     private String getMethodName(String name, boolean getter, boolean is) {
 
-        StringBuffer sb = new StringBuffer();
+        StringBuilder sb = new StringBuilder();
         if (getter) {
             if (is)
                 sb.append("is");
Index: org/apache/tomcat/util/modeler/ManagedBean.java
===================================================================
--- org/apache/tomcat/util/modeler/ManagedBean.java	(revision 831814)
+++ org/apache/tomcat/util/modeler/ManagedBean.java	(working copy)
@@ -460,7 +460,7 @@
      */
     public String toString() {
 
-        StringBuffer sb = new StringBuffer("ManagedBean[");
+        StringBuilder sb = new StringBuilder("ManagedBean[");
         sb.append("name=");
         sb.append(name);
         sb.append(", className=");
Index: org/apache/tomcat/util/modeler/NotificationInfo.java
===================================================================
--- org/apache/tomcat/util/modeler/NotificationInfo.java	(revision 831814)
+++ org/apache/tomcat/util/modeler/NotificationInfo.java	(working copy)
@@ -125,7 +125,7 @@
      */
     public String toString() {
 
-        StringBuffer sb = new StringBuffer("NotificationInfo[");
+        StringBuilder sb = new StringBuilder("NotificationInfo[");
         sb.append("name=");
         sb.append(name);
         sb.append(", description=");
Index: org/apache/tomcat/util/modeler/Registry.java
===================================================================
--- org/apache/tomcat/util/modeler/Registry.java	(revision 831814)
+++ org/apache/tomcat/util/modeler/Registry.java	(working copy)
@@ -996,7 +996,7 @@
                                   String name)
             throws Exception
     {
-        StringBuffer sb=new StringBuffer();
+        StringBuilder sb=new StringBuilder();
         sb.append( domain ).append(":");
         sb.append( name );
         String nameStr=sb.toString();