Nio — Key - Press Rewind

: Implement rewind() specifically when a data stream must be processed multiple times (e.g., checksum calculation followed by data parsing).

: While flip() sets the limit to the current position before resetting the position to 0 (preparing to read what was just written), rewind() only resets the position, assuming the limit is already correct for the intended operation. Nio Key - Press Rewind

: Forgetting to cast or handle Buffer methods correctly when moving between different Java versions (e.g., JDK 8 vs. JDK 9+) can lead to NoSuchMethodError . Recommendations for Implementation : Implement rewind() specifically when a data stream

: rewind() is ideal when you need to perform a second pass over the same data without modifying the "limit" set by a previous flip() operation. JDK 9+) can lead to NoSuchMethodError

Java NIO. For years, Java's traditional I/O… | by Kaustubh Saha

In Java NIO, the rewind() method on a Buffer is used to reset the buffer's position to zero while keeping the limit unchanged, effectively allowing you to the data already contained in the buffer. NIO Buffer Report: "Press Rewind" Technical Summary Status / Description Action Performed buffer.rewind() Position Change Set to 0 Limit Change None (remains at current limit) Mark Status Discarded Primary Use Case