Java how to copy part of a file

Posted by user3479074 on Stack Overflow See other posts from Stack Overflow or by user3479074
Published on 2014-08-06T19:47:58Z Indexed on 2014/08/23 22:21 UTC
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java

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file-io

I have to read a file and depending of the content of the last lines, I have to copy most of its content into a new file. Unfortunately I didn't found a way to copy first n lines or chars of a file in java.
The only way I found, is copying the file using nio FileChannels where I can specifiy the length in bytes. However, therefore I would need to know how many bytes the stuff I read needed in the source-file.

Does anyone know a solution for one of these problems?

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