Java I/O NIO
Exploring Java NIO: Modern Input/Output Techniques
Java I/O NIO
Java NIO (New Input/Output) is a key component introduced in Java 1.4 that provides an alternative to the standard Java I/O API, offering a more scalable and flexible way to handle input and output operations. NIO introduces channels, buffers, and selectors, which enable non-blocking I/O operations, allowing developers to read and write data more efficiently without the constraints of traditional stream-based I/O. It supports asynchronous file and network operations, making it especially suitable for applications that require high throughput, such as web servers and file transfer utilities. With features like memory-mapped files, file locking, and improved file system access, NIO enhances performance and scalability for applications dealing with large volumes of data.
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1 - Introduction to Java I/O
Overview of Java I/O package and its importance in data manipulation and file handling.
2) Stream Types
Explanation of byte streams vs character streams and their use cases.
3) File Handling Basics
Introduction to File class for managing files and directories, including creating, deleting, and checking existence.
4) Reading and Writing Files
Demonstrating how to read data from files using `FileInputStream` and write data using `FileOutputStream`.
5) Buffered Streams
Importance of using buffered streams (`BufferedInputStream`, `BufferedOutputStream`) for efficient data reading/writing.
6) Character Streams
Discussing character streams like `FileReader` and `FileWriter`, and their use in handling text files.
7) PrintWriter and PrintStream
Introduction to `PrintWriter` and `PrintStream` for formatted output and ease of writing data to files.
8) Serialization in Java I/O
Understanding object serialization and deserialization using `ObjectOutputStream` and `ObjectInputStream`.
9) Error Handling in I/O
Exception handling in I/O operations with try catch blocks, and using finally for closing resources.
10) Introduction to Java NIO
Overview of the NIO package, its enhancements over standard I/O, and reasons for its introduction.
11) Buffer and Channels in NIO
Explanation of Buffer classes and Channels, how they work together for data transfer, and why they're more efficient than traditional streams.
12) FileChannel and File I/O
Methods to read from and write to files using `FileChannel` and the performance benefits.
13) Selectors and Non blocking I/O
Exploring `Selector` for multiplexing I/O operations, enabling non blocking I/O for handling multiple channels.
14) Path and Files Classes
Introduction to the `Path` and `Files` classes for robust file operations, including file creation, deletion, and attribute access.
15) Asynchronous File Channel
Understanding the `AsynchronousFileChannel` for performing asynchronous file operations, improving performance in I/O heavy applications.
16) NIO.2 Features
Highlight improvements in NIO.2, such as enhanced file handling, symbolic links, and file attributes.
17) Performance Comparison
Discuss the differences in performance between traditional I/O and NIO, demonstrating real world scenarios.
18) Practical Examples
Hands on coding examples implementing Java I/O and NIO concepts covered during the training.
19) Best Practices
Discuss best practices for handling files, streams, and buffers in Java applications.
20) Q&A Session
Open the floor for student questions to clarify concepts and explore real world applications further.
Conclusion
This training program provides a comprehensive understanding of Java's traditional I/O as well as the NIO features, helping students to develop robust applications that efficiently handle data input and output.
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