src/share/classes/sun/misc/JavaLangAccess.java

rev 6516 : 8007398: Peformance improvements to Integer and Long string formatting.
Contributed-by: Steven Schlansker <stevenschlansker@gmail.com>

*** 95,100 ****
--- 95,121 ----
  
      /**
       * Returns the ith StackTraceElement for the given throwable.
       */
      StackTraceElement getStackTraceElement(Throwable t, int i);
+ 
+     /**
+      * Returns a string backed by the provided character array. The character
+      * array must not be modified after the string is created in order to
+      * fulfill String's contract.
+      *
+      * @param chars the character array to back the string.
+      * @return a newly created string whose content is the character array.
+      */
+     String createStringSharedChars(char[] chars);
+ 
+     /**
+      * Format a long (treated as unsigned) into a character buffer.
+      * @param val the unsigned long to format
+      * @param shift the log2 of the base to format in (4 for hex, 3 for octal, 1 for binary)
+      * @param buf the character buffer to write to
+      * @param offset the offset in the destination buffer to start at
+      * @param len the number of characters to write
+      * @return the lowest character  location used
+      */
+     int formatUnsignedLong(long val, int shift, char[] buf, int offset, int len);
  }