Java - Load file, replace string, save

Question

I have a program that loads lines from a user file, then selects the last part of the String (which would be an int)

Here\'s the style it\'s saved in:

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Answer 1

Hard to answer without the complete code...

Is value a string ? If so the replace will create a new string but you are not saving this string anywhere. Remember Strings in Java are immutable.

You say you use a BufferedWriter, did you flush and close it ? This is often a cause of values mysteriously disappearing when they should be there. This exactly why Java has a finally keyword.

Also difficult to answer without more details on your problem, what exactly are you trying to acheive ? There may be simpler ways to do this that are already there.