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Difference between the StringBuilder and StringBuffer class

 
Greenhorn
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The difference seem to be StringBuilder being non-synchrinized and StringBuffer being synchronized. But I am not getting a clear idea on how it works.Can I please get a simple example to start getting the concept correct?
 
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Methods of StringBuffer class are synchronized although StringBuilder's not,hence faster performance.I don't care, how synchronization work for them.If you want to know, then read this Synchronized Methods .

-hth
 
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Yeah, I suppose that's the difference.

This class provides an API compatible with StringBuffer, but with no guarantee of synchronization. This class is designed for use as a drop-in replacement for StringBuffer in places where the string buffer was being used by a single thread (as is generally the case). Where possible, it is recommended that this class be used in preference to StringBuffer as it will be faster under most implementations.

Source: StringBuilder
 
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