21. Java I/O and NIO
Java I/O and NIO are essential frameworks in the Java programming language for performing efficient input and output operations. While Java I/O focuses on stream-based data handling, Java NIO offers enhanced performance and flexibility through non-blocking operations and the use of buffers and channels. The chapter also discusses advanced features introduced in Java 7 with NIO.2, making file handling more powerful and responsive for modern applications.
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What we have learnt
- Java I/O uses streams for data input and output operations.
- Java NIO provides a more scalable and flexible approach using buffers and channels.
- Comparison highlights that NIO supports non-blocking I/O while Java I/O is always blocking.
- Java 7 introduced advanced APIs for file handling, improving upon the traditional java.io.File class.
Key Concepts
- -- Streams
- Streams represent a sequence of data and can be byte-based or character-based for handling binary or textual data respectively.
- -- Channels
- Channels provide a bi-directional connection for reading and writing data between buffers and I/O devices.
- -- Selectors
- Selectors enable non-blocking I/O, allowing a single thread to manage multiple channels.
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