Read Last N Lines From File in Java

Date: 2024-08-14

This Java tutorial demonstrates four methods to read the last N lines of a file: using BufferedReader, Scanner, NIO2's Files, and Apache Commons IO's ReversedLinesFileReader. BufferedReader and Scanner iteratively read and store the last N lines in a list. NIO2's Files.readAllLines() reads the entire file, then extracts the last N lines—less efficient for large files. Apache Commons IO offers a more efficient reverse reading approach, ideal for large files. The best method depends on file size and efficiency needs.

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