Programming Tips - Should I use StringBuffer or StringBuilder?

Date: 2011sep28 Updated: 2014mar24 Language: Java Q. Should I use StringBuffer or StringBuilder? A. Unless you need the buffer to be thread-safe use StringBuilder -- its is faster. Also if you want to use Matcher's appendReplacement() and appendTail() you need to use StringBuffer. But usually you just want something faster than string + string so use StringBuilder.