Reviewed-by: alanb

Summary: cache a copy of the char[] to use with toString() and clear it when ever the sb content is modified
Reviewed-by: alanb, plevart, mduigou, forax

Summary: Add blanket null-handling statement to StringBuilder and StringBuffer
Reviewed-by: mduigou

Summary: use a common javadoc style in the String classes
Reviewed-by: darcy

Summary: update StringBuilder & StringBuffer to consistently handle forwarding to AbstractStringBuilder. Some additional cleanup (removal of refs to sub-classes from AbstractStringBuilder)
Reviewed-by: chegar, alanb, mduigou

Summary: add usage note to clarify thread safety
Reviewed-by: briangoetz, mduigou
Contributed-by: jim.gish@oracle.com

Reviewed-by: darcy, weijun

Summary: Update for files that have been modified starting July 2008
Reviewed-by: ohair, tbell

Summary: Major spec rework
Reviewed-by: alanb