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Thread: stringbuilder and string buffer

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    Default stringbuilder and string buffer

    what is the difference between stringbuffer and string builder?


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    Default Re: stringbuilder and string buffer

    Visit these links below to know the answer.
    StringBuffer (Java Platform SE 7 )
    StringBuilder (Java Platform SE 7 )

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    Default Re: stringbuilder and string buffer

    Simply use StringBuilder unless you really are trying to share a buffer between threads. StringBuilder is the unsynchronized (less overhead = more efficient) younger brother of the original synchronized StringBuffer class.

    StringBuffer came first. Sun was concerned with correctness under all conditions, so they made it synchronized to make it thread-safe just in case.

    StringBuilder came later. Most of the uses of StringBuffer were single-thread and unnecessarily paying the cost of the synchronization.

    Since StringBuilder is a drop-in replacement for StringBuffer without the synchronization, there would not be differences between any examples.

    If you are trying to share between threads, you can use StringBuffer, but consider whether higher-level synchronization is necessary, e.g. perhaps instead of using StringBuffer, should you synchronize the methods that use the StringBuilder.

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