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How to Prevent java.lang.OutOfMemoryError in Java

February 24, 2025 by mkyong

Encountering a java.lang.OutOfMemoryError can be frustrating, but we can take several practical steps to prevent it. In this article, we explain what causes this error, provide real world examples, and discuss effective techniques to manage memory in our Java applications. Table of contents Understanding java.lang.OutOfMemoryError Common Causes and Prevention Techniques 1. Optimize Heap Size 2. …

How to simulate java.lang.OutOfMemoryError in Java

February 25, 2025June 28, 2021 by mkyong

A simple code snippet to simulate the java.lang.OutOfMemoryError: Java heap space

Java 11 – Java Flight Recorder

May 3, 2020May 3, 2020 by mkyong

Java Flight Recorder (JFR) is a Java profiling tool that used to monitor and diagnose a running Java application, it collects data about the running environment, JVM and Java application and dumps the recorded data into a .jfr file, and we can use Java Mission Control (JMC) to analyze and visualize the .jfr file. Tested …