Advanced Programming | 21. Java I/O and NIO by Abraham | Learn Smarter
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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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Sections

  • 21

    Java I/o And Nio

    This section covers Java's Input/Output (I/O) and New Input/Output (NIO) APIs, highlighting their functionalities and differences.

    Learning Practice

  • 21.1

    Java I/o (Java.io Package)

    The Java I/O API allows for efficient data handling through streams, enabling reading and writing of files and objects.

    Learning Practice

  • 21.1.1

    Streams In Java

    This section covers the concept of streams in Java, detailing both byte and character streams and common classes associated with them.

    Learning Practice

  • 21.1.2

    File Class

    The java.io.File class represents an abstract path to a file or directory, providing methods to query and manipulate the file.

    Learning Practice

  • 21.1.3

    Serialization

    Serialization in Java enables the saving of an object's state to a byte stream for later retrieval.

    Learning Practice

  • 21.2

    Java Nio (Java.nio Package)

    Java NIO provides a scalable and efficient I/O framework, leveraging buffers, channels, and selectors for improved performance over traditional Java I/O.

    Learning Practice

  • 21.2.1

    Key Concepts In Nio

    This section introduces the essential components of Java NIO, focusing on buffers, channels, selectors, and file handling improvements.

    Learning Practice

  • 21.2.2

    Buffer Classes

    Buffer classes in Java NIO provide a mechanism for handling data storage temporarily in memory during input and output operations.

    Learning Practice

  • 21.2.3

    Channels

    Channels in Java NIO provide a means for bi-directional data transfer between buffers and I/O devices, crucial for handling file and socket I/O operations more efficiently.

    Learning Practice

  • 21.2.4

    Selectors

    Selectors in Java NIO are mechanisms that allow a single thread to monitor multiple channels for I/O events in a non-blocking manner.

    Learning Practice

  • 21.2.5

    Path, Paths, And Files (Java 7+)

    The java.nio.file package in Java 7+ enhances file management techniques over the older java.io.File methods.

    Learning Practice

  • 21.3

    Comparison: Java I/o Vs Nio

    This section compares Java I/O and NIO, highlighting their key differences in data handling, performance, and usability.

    Learning Practice

  • 21.4

    Advanced Nio: Memory-Mapped Files

    Memory-mapped files in Java NIO enable the efficient reading of large files by mapping them directly into memory.

    Learning Practice

  • 21.5

    Java Nio.2 Enhancements (Java 7+)

    This section discusses enhancements introduced in Java NIO.2, including the WatchService API, better support for symbolic links, and improved exception handling.

    Learning Practice

  • 21.6

    Summary

    Java I/O and NIO are essential libraries for handling data operations efficiently in Java.

    Learning Practice

References

Chapter_21_Java.pdf

Class Notes

Memorization

What we have learnt

  • Java I/O uses streams for d...
  • Java NIO provides a more sc...
  • Comparison highlights that ...

Final Test

Revision Tests