Answer Posted / rajujohn

hi All
Both are mutable ,that means we can change value of the
instance variable using append,insert and ...
But only one difference when you go for the multi-thread
concept you use StringBuffer,Because it is thread safe ,that
means, if one thread access this stringbuffer variable on
the time another thread cant access this stringbuffer,so
stringbuffer is slowest performance compare to stringbuilder.

by raju.j

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