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  Tutorial: Example - Array to String

Program to concatenate all of the strings in an array, each separated by a specifed string separater.

Tutorial Details:

Here is a simple, but slow, program to concatenate all of the strings in an array, each separated by a specifed string separater.

The problem with the above program is that a new String object is created each time thru the loop, and the old String object becomes eligible for garbage collection. This constant creation and abandoning objects is terribly inefficient. A more efficient way to do this is to use a StringBuffer or the equivalent Java 5 StringBuilder, which will grow as needed, but generally only has to expand a few times to do the job.


 

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Example - Array to String

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