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Editorial Team
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Asked: 2026-05-18T10:13:40+00:00

I’m trying to edit configuration file in Java. What I really need to do

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I’m trying to edit configuration file in Java. What I really need to do is to change single line, so reading the whole file and writing it back would be waste of time, since configuration file can be big.

Is there a more efficient way to do this? Except reading in/editing/writing out file. I thouhgt of converting entire file to string, replacing the line I want and writting it back.

I don’t know how efficient would that be, can someone give me some other suggestions or the one I mentioned are ok, execution time is important.

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1 Answer

  1. Editorial Team

    I would recommend to use the Preferences API instead. Then on the Windows platform your preferences is stored in the registry. On other platforms the corresponding way to save application preferences is used. See also Preferences API Overview.

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