Eliminate creation of temporary strings in loops.

git-svn-id: https://svn.apache.org/repos/asf/xalan/java/trunk@1225442 13f79535-47bb-0310-9956-ffa450edef68

src/org/apache/xalan/templates/ElemNumber.java

@@ -1219,16 +1219,17 @@ String formatNumberList(
           // then append the formatToken.
           else if (formatTokenizer.isLetterOrDigitAhead())
           {
-            formatTokenString = formatToken;
+            final StringBuffer formatTokenStringBuffer = new StringBuffer(formatToken);
 
             // Append the formatToken string...
             // For instance [2][1][5] with a format value of "1--1. "
             // should format to "2--1--5. " (I guess).
             while (formatTokenizer.nextIsSep())
             {
               formatToken = formatTokenizer.nextToken();
-              formatTokenString += formatToken;
+              formatTokenStringBuffer.append(formatToken);
             }
+            formatTokenString = formatTokenStringBuffer.toString();
 
             // Record this separator, so it can be used as the 
             // next separator, if the next is the last.
@@ -1943,31 +1944,33 @@ protected String long2roman(long val, boolean prefixesAreOK)
       return getZeroString();
     }
 
-    String roman = "";
+    final String roman;
     int place = 0;
 
     if (val <= 3999L)
     {
+      StringBuffer romanBuffer = new StringBuffer();
       do
       {
         while (val >= m_romanConvertTable[place].m_postValue)
         {
-          roman += m_romanConvertTable[place].m_postLetter;
+          romanBuffer.append(m_romanConvertTable[place].m_postLetter);
           val -= m_romanConvertTable[place].m_postValue;
         }
 
         if (prefixesAreOK)
         {
           if (val >= m_romanConvertTable[place].m_preValue)
           {
-            roman += m_romanConvertTable[place].m_preLetter;
+            romanBuffer.append(m_romanConvertTable[place].m_preLetter);
             val -= m_romanConvertTable[place].m_preValue;
           }
         }
 
         place++;
       }
       while (val > 0);
+      roman = romanBuffer.toString();
     }
     else
     {