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. …
Swapping two variables is a common task in programming. Traditionally, we use a temporary variable to hold one value while swapping, but Java allows us to swap two variables without using a temp variable. In this tutorial, we will explore different ways to achieve this in Java with real-world examples. Table of contents: 1. Swapping …
A code snippet to show you how to get the number of available processors / cores / CPUs in your environment. int processors = Runtime.getRuntime().availableProcessors(); System.out.println(processors); Output 8 P.S Tested with Intel(R) Core(TM) i7-4770 CPU @3.40GHz