Java 8 Fundamentals: NIO and NIO2 from Pluralsight

Java NIO and NIO2 are two evolutions of the Java I/O API. It does not make Java I/O obsolete in any way, but merely bring more functionalities, leveraging the capabilities of file systems, not used by Java I/O.

Java NIO and NIO2 have been added to the JDK to add more functionalities offered by the file systems that aren't used by Java I/O. In this course, Java 8 Fundamentals: NIO and NIO2, you'll learn how to use Java NIO to read and write data efficiently in bulk mode, and asynchronously to handle more operations simultaneously. First, you'll explore the fundamental objects of this API, including Buffer, Channel, and Selector to precisely set up performant I/O applications for disk or network access. Next, you'll discover how to efficiently navigate through very large directory structures, and how to trigger actions on directory events plugged on the native capabilities of the file systems for better performance. Finally, you'll delve into all of these APIs in action in extended live coding sessions, showing you how to properly use the patterns and how to deal with errors. By the end of this course, you'll have the necessary knowledge to design and create robust and performant I/O systems by following the right patterns, whether you want to access file systems or networks.

What's inside

Syllabus

Course Overview

Creating Channels with NIO

Setting up Asynchronous Operations with NIO

Using FileSystems in Java NIO2

Visiting Directory Trees

Listening to Directory Events

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Provides a strong foundation for beginners to NIO and NIO2 in Java

Taught by Jose Paumard, who has extensive background and expertise in Java NIO and NIO2

Covers essential components of NIO and NIO2, including Buffers, Channels, and Selector

Focuses on efficient bulk mode I/O and asynchronous operations

Provides hands-on experience with live coding sessions

Leverages capabilities from file systems not utilized by Java I/O

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Java 8 Fundamentals: NIO and NIO2 with these activities:

Review Operating System Fundamentals

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Review the foundational concepts of operating systems to ensure a strong understanding of topics covered in the course.

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Review key concepts of OS architecture, including processes, threads, and memory management.
Read articles and tutorials on OS scheduling algorithms and synchronization mechanisms.
Solve practice problems related to OS concepts to test your understanding.

File Traversal

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Practice navigating through large directory structures using the Java NIO2 Files and Directory classes.

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Create a Path object for the root directory.
Use the Files.walk() method to walk through the directory tree.
Implement the FileVisitor interface to handle each file and directory.
Use the Files.isDirectory() method to determine if a path is a directory.
Use the Files.isHidden() method to determine if a path is hidden.

Java NIO2 Tutorial

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Create a tutorial that explains the basics of Java NIO2, including how to use Channels, Buffers, and Selectors.

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Choose a topic to focus on.
Research the topic and gather information.
Write the tutorial in a clear and concise manner.
Proofread the tutorial for errors.
Publish the tutorial online.

Six other activities

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Mentor Junior Java Developers

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Mentor junior Java developers and help them learn Java NIO2.

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Find a junior Java developer to mentor.
Set up a regular meeting time.
Discuss Java NIO2 concepts with your mentee.
Answer your mentee's questions.
Provide your mentee with feedback on their progress.

Exploration Time - Asynchronous Operations

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Practice using the Java NIO2 Channels and Selectors to complete asynchronous operations.

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Create a non-blocking server socket channel.
Configure the server socket channel to be non-blocking.
Create a selector and register the server socket channel with the selector.
Use a loop to wait for events on the selector.
When an event occurs, handle it accordingly.

Directory Event Monitoring

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Practice monitoring directory events using the Java NIO2 WatchService class.

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Create a WatchService object.
Register a directory with the WatchService.
Use a loop to wait for events on the WatchService.
When an event occurs, handle it accordingly.
Use the WatchEvent.kind() method to determine the type of event.

Disk I/O Benchmark

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Create a Java NIO2 program that benchmarks the performance of disk I/O operations.

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Design the benchmark.
Implement the benchmark in Java NIO2.
Run the benchmark and collect data.
Analyze the data and draw conclusions.
Write a report on the findings.

Java NIO2 Coding Challenge

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Enter a Java NIO2 coding challenge to test your skills and compete against other Java developers.

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Find a Java NIO2 coding challenge.
Register for the challenge.
Implement the solution in Java NIO2.
Submit your solution.
Wait for the results.

Contribute to Java NIO2

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Contribute to the Java NIO2 open source project.

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Find a bug or feature to work on.
Implement the fix or feature in Java NIO2.
Submit a pull request.
Wait for the pull request to be reviewed and merged.
Celebrate your contribution!

Career center

Learners who complete Java 8 Fundamentals: NIO and NIO2 will develop knowledge and skills that may be useful to these careers:

Network Architect

A Network Architect designs, builds, and maintains efficient networks. They ensure that networks are secure, reliable, and scalable. This course provides a solid foundation in Java NIO and NIO2, which are essential technologies for network programming. By understanding how to use these APIs, Network Architects can create high-performance network applications.

See salaries and explore the career path for Network Architect

Software Engineer

A Software Engineer designs, develops, and tests software applications. They work with a variety of technologies, including Java NIO and NIO2. This course provides a comprehensive overview of these APIs, helping Software Engineers to build robust and performant I/O systems.

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Java Developer

A Java Developer specializes in developing and maintaining applications using the Java programming language. This course provides a comprehensive overview of Java NIO and NIO2, which are essential technologies for developing high-performance I/O applications.

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Data Engineer

A Data Engineer designs, builds, and maintains data pipelines. They use a variety of technologies, including Java NIO and NIO2, to efficiently process and store data. This course provides a solid foundation in these APIs, helping Data Engineers to create scalable and efficient data pipelines.

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Systems Engineer

A Systems Engineer designs, builds, and maintains computer systems. They use a variety of technologies, including Java NIO and NIO2, to ensure that systems are reliable, efficient, and secure. This course provides a comprehensive overview of these APIs, helping Systems Engineers to create robust and performant systems.

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Network Administrator

A Network Administrator manages and maintains computer networks. They use a variety of technologies, including Java NIO and NIO2, to ensure that networks are secure, reliable, and efficient. This course provides a solid foundation in these APIs, helping Network Administrators to troubleshoot and resolve network issues.

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Web Developer

A Web Developer designs, builds, and maintains websites and web applications. They use a variety of technologies, including Java NIO and NIO2, to create high-performance web applications. This course provides a comprehensive overview of these APIs, helping Web Developers to create scalable and efficient web applications.

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Cloud Architect

A Cloud Architect designs, builds, and maintains cloud computing systems. They use a variety of technologies, including Java NIO and NIO2, to create scalable and efficient cloud applications. This course provides a solid foundation in these APIs, helping Cloud Architects to create robust and performant cloud systems.

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Database Administrator

A Database Administrator manages and maintains databases. They use a variety of technologies, including Java NIO and NIO2, to ensure that databases are reliable, efficient, and secure. This course provides a solid foundation in these APIs, helping Database Administrators to troubleshoot and resolve database issues.

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IT Manager

An IT Manager plans, implements, and manages IT systems and services. They use a variety of technologies, including Java NIO and NIO2, to ensure that IT systems are reliable, efficient, and secure. This course provides a solid foundation in these APIs, helping IT Managers to make informed decisions about IT systems and services.

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Security Analyst

A Security Analyst investigates and resolves security incidents. They use a variety of technologies, including Java NIO and NIO2, to identify and mitigate security risks. This course provides a solid foundation in these APIs, helping Security Analysts to develop and implement effective security measures.

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DevOps Engineer

A DevOps Engineer collaborates with developers and operations teams to ensure that software is delivered quickly and reliably. They use a variety of technologies, including Java NIO and NIO2, to automate and streamline the software development and deployment process. This course provides a solid foundation in these APIs, helping DevOps Engineers to create and maintain efficient and reliable software delivery pipelines.

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Cloud Engineer

A Cloud Engineer designs, builds, and maintains cloud computing systems. They use a variety of technologies, including Java NIO and NIO2, to create scalable and efficient cloud applications. This course provides a solid foundation in these APIs, helping Cloud Engineers to create robust and performant cloud systems.

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Data Scientist

A Data Scientist analyzes and interprets data to extract insights and make predictions. They use a variety of technologies, including Java NIO and NIO2, to process and analyze large datasets. This course may provide a useful foundation in these APIs, helping Data Scientists to develop and implement efficient data processing pipelines.

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Business Analyst

A Business Analyst analyzes business processes and develops solutions to improve efficiency and effectiveness. They use a variety of techniques and tools, including Java NIO and NIO2, to gather and analyze data. This course may provide a useful foundation in these APIs, helping Business Analysts to develop and implement efficient and effective business solutions.

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