FilesnewBufferedReaderPath

FilesnewBuffer is a programming construct used primarily in file manipulation libraries to create an in‑memory buffer that represents the contents of a file. The name originates from early implementations in the Java NIO and C# System.IO namespaces, where developers needed a lightweight, temporary representation of file data for editing, parsing, or streaming operations. The FilesnewBuffer abstraction allows developers to read a file into a byte or character array, modify it, and then write the changes back to disk without repeatedly performing costly I/O operations.

In typical usage, a FilesnewBuffer call takes the path of a file and optionally a charset or encoding. The method opens the file in read‑only mode, copies its contents into a buffer structure, and returns a reference that can be manipulated directly. Example usage in a Java‑style pseudocode shows Files.newBuffer(Paths.get("example.txt")); The returned buffer can be passed to processors such as parsers or formatters, which operate on the buffer contents. Once processing is complete, the buffer can be flushed back to the original path or to a new file by invoking a corresponding write operation.

One advantage of FilesnewBuffer is that it reduces the number of disk seeks, which is especially beneficial for large files or when performing many small changes. However, it does consume memory proportional to the file size, which can be a limitation for very large input files. To mitigate this, many libraries provide a memory‑mapped buffer alternative that maps the file directly into virtual memory, allowing for efficient random access without explicit copying. FilesnewBuffer remains a common choice for applications that require quick, temporary, in‑memory access to file data.