Top 5 Advanced Java Courses for Experienced Developers to Learn in 2021 - Best of Lot

Hello guys, if you have been doing Java development for few years then you know that Performance is the key for any Java application. As a senior Java developer, one should know how to improve the performance of Java applications and understand memory management and garbage collection which often causes performance in Java applications. These are some advanced skills that take some effort to develop. It doesn't come by default even if you are programming in Java for years as most people don't touch these topics. Many of them are afraid or take the performance tuning work and always look up to the most senior or brilliant developers in their team.

Since many of my readers asked me about how they can improve their Java performance tuning skills I am going to share a couple of the best online courses you can take to learn Java performance tuning. This is a continuation of my previous posts for experienced programmers like advanced Java books and advanced core Java courses.

These courses will teach you what every experienced Java professional should know about memory, garbage collection, tuning the VM, and avoiding memory leaks. You will learn about tools like memory analyzers, Profilers like JProfiler, VisualVM to learn and understand how to monitor the performance of Java applications, how to check GC logs, how to check if there is a deadlock or thread contention, and how to read thread dumps to understand what's going inside your Java application.

You will also develop skills to think in the right direction like Is your Java service slower than you would like? are they consuming too many system resources or lagging in performance as load increases? Unless you question yourself and develop this thinking it won't be easy to find the root cause of performance degradation and fix that.

Java applications can often suffer from memory problems like OutOfMemoryError and excessive GC logging, which can make your application slow but you need experience and knowledge to figure out as there are too many things to know like is data increase, is DB is blocking or slowing down or is Linux machine has resource issues, or it is your Java code or JVM settings. These courses will show you how to fix them using freely available tools.

5 Advanced Java Courses to Learn GC, Performance Tuning, and Memory Management in 2021

Without wasting any more of your time, here are the best courses to learn Java Performance Tuning, memory management, Garbage Collection tuning, and JVM-specific things. These are hand-picked and highly recommended courses from Java experts and also very affordable.

1. Java Application Performance and Memory Management

If you are a senior Java developer and want to improve your Java application performance skill then this probably the best course to start with.

In this course, you'll first learn what can cause performance issues in Java applications like threads, memory, Garbage collection, and how to resolve them.

It will also teach you some of the best practices which are available to Java developers at design-time like how to make good coding choices for optimal performance.

We'll learn about various ways that you can configure the Java virtual machine to provide better performance at run-time. And we'll be diving deep into how the virtual machine manages memory and the garbage collection process.

Along the way, we'll be learning about the Just In Time compiler, performance testing and benchmarking, decompiling bytecode, using the GraalVM as an alternative virtual machine, and more. In short, one of the best course for experienced Java developer who is looking to take their skills to the next level.

Top 5 Advanced Courses to Learn Java Performance, Concurrency, and Memory Management for Experienced Programmers

2. Java Multithreading, Concurrency & Performance Optimization

This one is another excellent course for experienced Java developer looking to become an expert in Multithreading, Concurrency Parallel programming in Java, with a strong emphasis on high performance

In this course, you will learn all the essential tools you need to troubleshoot performance and memory-related issues, thread-related problems, and JVM specific things. As I have said before, tools are really important because a Java developer is as good as its tools. If you don't know how to profile your Java application then you will never know which object is taking all the memory and where is the bottleneck in your code.

Similarly, if you can't read the thread dump then you don't know where exactly your program has stuck, are they waiting for the Database to respond or another server or waiting for some file lock. If you know the right tool, you can troubleshoot quickly and efficiently.

The good thing about this course is that it is designed to teach you "how to fish". Instead of memorizing classes, libraries, or Java APIs, you will learn the fundamentals of concurrent programming, starting from the complete basics, all the way to the very advanced topics in multithreading.

best course to learn Java Multithreading, Concurrency & Performance Optimization

2. Java Memory Management

This is another great course from Udemy on Java Memory Management and improving Java performance. It's an ideal course for Java professionals (or aspiring Java professionals) who need an in-depth understanding of how memory works in Java.

In this Udemy course, you'll learn what kinds of memory leaks are possible in Java (yes, a memory leak is possible in Java), and how to avoid them. 

In addition, you will learn about common tools you can use to analyze how your applications are performing and detect inefficient memory use, such as objects which are taking up too much memory, or problems causing because inefficient garbage collection, and most importantly how to fix them.

If you are thinking that this might be too advanced a course for you then don't worry, you don't need to be a Java Expert to do this course, but you should be able to confidently create basic Java code before you start.

best online course to learn Java Memory Management

4. Java Performance Tuning By Tim Ojo

If you are a Pluralsight learner and looking for good Java courses on Pluralsight then you will be glad to find out about this one. It's one of the advanced Java courses on Pluralsight which will teach you all tools and techniques for troubleshooting, analyzing, and improving the performance of your Java application.

In this course, you will learn how to improve the performance of Java applications in a structured and methodical way. 

First, you will discover tools and techniques for analyzing the performance of your application and troubleshooting performance issues. Next, you will learn about the JVM internals that influences performance and how to tune them.

Finally, you will gain best practices for writing high-performing application code. When you’re finished with this course, you will have the skills and knowledge needed to build and run highly performant Java applications in production.

best course to learn Java Performance Tuning

5. Understanding and Solving Java Memory Problems By Richard Warburton

This is another advanced Java course from Pluralsight which I highly recommend to experienced Java developers. You would be surprised to know that despite the existence of Garbage Collection Java applications often suffer from memory problems like OutOfMemory error and Excessive GC logging which makes your application slow.

This course will teach you how to uncover and solve them. You'll learn how to solve problems relating to memory in Java, like heap space, stack, and metaspace.

First, you'll explore how to solve the problem of memory leaks. Next, you'll discover advice about over-consuming your memory and running out of the heap.

Finally, you'll learn why your application can be too slow due to the effect of allocating memory at too fast of a rate. By the end of this course, you'll learn how to solve these problems and also how to understand memory-related problems in general.

Btw, you would need a Pluralsight membership to access this course which costs around $299 per year or $29 per month but provides unlimited access to their 5000+ expert-led courses. If you want to try, you can also check out their 10-day free pass to access this course for free.

best course to learn Java Virtual Machine

That's all about some of the best courses to learn Java Performance Tuning and memory management. It's an important skill for a senior Java developer to diagnose and fix memory problems and performance issues and these courses will give you enough knowledge, tools, and strategies to resolve memory leaks and other memory-related errors and improve the performance of your Java application.

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Thanks for reading this article so far. If you like these Java performance tuning and memory management courses then please share them with your friends and colleagues. If you have any questions or feedback then please drop a note.

P. S. - If you are new to the Java world and looking for some free online courses to start learning the Java programming language then you can also, check out these free Java courses from Udemy to start your Java developer journey.

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