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Java - StringBuilder vs StringBuffer

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StringBuffer

StringBuffer is synchronized
StringBuffer is thread-safe
StringBuffer is slow
StringBuffer is mutable

StringBuilder

StringBuilder is not synchronized
StringBuilder is not thread-safe
StringBuilder performance is better than StringBuffer
StringBuilder is mutable

https://stackoverflow.com/questions/355089/difference-between-stringbuilder-and-stringbuffer
http://www.ewdna.com/2009/06/stringbuilderstringbuffer.html

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