Nio Key - Press Rewind Apr 2026

: 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.

: When compiling for older environments, explicitly cast the buffer to (java.nio.Buffer) before calling rewind() or flip() to ensure runtime compatibility. Nio Key - Press Rewind

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

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

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