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

rev 6519 : 8006627: Performance improvements to UUID(String) and UUID.toString()
Contributed-by: Steven Schlansker <stevenschlansker@gmail.com>

@@ -95,6 +95,27 @@
 
     /**
      * 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);
 }