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
Re-reading or re-writing a buffer that has already been filled or flipped Nio Key - Press Rewind
: Implement rewind() specifically when a data stream must be processed multiple times (e.g., checksum calculation followed by data parsing). In Java NIO, the rewind() method on a
: Use built-in NIO methods like rewind() rather than manually setting positions to 0 to ensure the mark is correctly invalidated, preventing stale state errors. : When compiling for older environments, explicitly cast
: When compiling for older environments, explicitly cast the buffer to (java.nio.Buffer) before calling rewind() or flip() to ensure runtime compatibility.