Java Glossary : nio

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nio: Introduced in Java 1.4, the java.nio (new i/ o) package allows i/o more like that available in other lower level languages like C. You can memory map files. You can read and write blocks of data direct from disk, rather than byte by byte. It deals with the endian problem when you fish the data out of the buffer, not during the read. You can do non-blocking asynchronous i/o. Regular I/O is based on stacking the methods you need in a rather verbose and highly assymetric way, in InputStream, Reader, BufferedReader. The nio design is cleaner, simpler and more efficient. You could do all your i/o with nio if you chose. At this point the File I/O Amanuensis will not generate nio examples.
Files and directories ¤ standard File I/O ¤ UnifiedIO

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