Category: Data

Alexandra Altvater September 3, 2021 Developer Tips, Tricks & ResourcesMemory management is Java’s strongest suit and one of the many reasons developers choose Java over other platforms and programming languages. On paper, you create objects, and Java deploys its garbage collector to allocate and free up memory.

If the garbage collector does not free up enough memory resources, your program will take memory from your operating system.A Java memory leak is not always serious compared to memory leaks that happen in C++ and other programming languages.

You can also use JVM Performance Metrics, which give you tons of data on garbage collection, thread counts and memory usage.Java profiling helps you monitor different JVM parameters, including object creation, thread execution, method execution and yes, garbage collection.When you have ruled out memory leaks as the reason for your application’s slow down, use Java profiling tools to get a closer view of how your application is utilizing memory and other resources.

A commercial feature of Oracle Java SE, Java Flight Recorder also gives you an easy way to detect memory leaks, find the classes responsible for these leaks and locate the leak to correct it.Now that you know your program has memory leaks, you can use these tools to help fix leaks when they become a problem – preferably before leaks become an issue.For our next example, we are going to use VisualVM.Once you have downloaded and configured VisualVM, analyze your code by running your application with VisualVM attached to it.

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