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10 Essential JVM Options for a Java Production System

Hello guys, this is a brief guide of relevant JVM options which you will often see in production Java systems. As a Java developer, you should know what these JVM options means, their importance, and how they affect your application. You will find that most of the JVM options are related to heap memory, garbage collection and to log some details, e.g., heap dump, necessary for troubleshooting heap related issues like a memory leak or excessive memory consumption. It's Ok if you don't know these Java virtual machine options yet, but you should be familiar with them, and that's the objective of this article. Btw, how do you find the JVM options your application is using? Well, you can see the startup scripts through which your application is started.

Top 7 Free courses to learn Selenium Driver in 2019 - Best of Lot

Testing is an integral part of software development and we have long been relied on manual testing by testers and QA professional to ship quality software and find bugs, but that's not sustainable anymore. There is an increased focus on automation testing nowadays and Selenium is leading the way with its web drivers. If you don't know what is selenium, it's a free automation testing tool for web applications. It can work with different web browsers like Chrome, Firefox, Internet Explorer, Opera and simulate human-like behavior. By using Selenium you can programmatically interact with all the different elements on a webpage. You can click on them, input text, extract text and so much more.

Learn Tree Data Structure in 5 Minutes - Binary Tree (BT), Binary Search Tree (BST), and Balanced Tree (AVL vs Red Black)

The Tree data structure is one of the essential data structures, but unfortunately, many programmers don't pay enough attention to learning Trees, particularly advanced tree data structures like balanced trees like AVL and Red-Black tree. Many of them think that knowing just array and the linked list is enough for programming interviews, but when they face questions about a tree, like the difference between binary tree and binary search tree, or difference between binary search tree and a self-balanced tree-like AVL tree or Red-Black tree, they become speechless.