Regarding StringBuffers and StringBuilders

[praveen raaj]

Hi Friends,
can you explain to me what is the common use for StringBuffers and StringBuilders?

[Patel Chintan]

Hi,

The only difference between StringBuffer and StringBuilder is that StringBuilder is unsynchronized whereas StringBuffer is synchronized. So when the application needs to be run only in a single thread then it is better to use StringBuilder. StringBuilder is more efficient than StringBuffer.

[Neha Daga]

StringBuffer and StringBuilder classes are both used to create mutable string objects which is not possible with String class the only difference between the two is already stated by chintan.

[Afzal Rehman]

StringBuffer is syncronized
StringBuilder is unsyncronized.
StringBuffer and StringBuilder are mutable.
StringBuilder was added in java 5 API it's same as StringBuffer except is not thread safe
StringBuilder is faster then StringBuffer as performance point of view.

[Phungsuk Wangdu]

well common use could be if we want mutable string objects
and both are used as an alternative to stiring