Java is one of the most popular and demanding programming languages across the world. The object-oriented programming language works on the 'Write Once, Run Anywhere' principle and is widely used for Android development along with building Web Applications, Desktop Applications, Scientific Applications, etc. Though if you're looking forward to learning JAVA for your career prospects then you first need to understand its fundamentals and basic components. Here, in this video, we're going to discuss its key components such as JDK, JRE & JVM, and various other underlying mechanisms like Path Variable, Execution Engine, Just-In-Time (JIT) Compiler, etc. to know how JAVA actually works. Check Out the Related Articles: Introduction to Java [https://www.geeksforgeeks.org/introduction-to-java/] Differences between JDK, JRE, and JVM [https://www.geeksforgeeks.org/differences-jdk-jre-jvm/] How JVM Works – JVM Architecture? [https://www.geeksforgeeks.org/jvm-works-jvm-architecture/] How is Java Platform independent? [https://www.geeksforgeeks.org/java-platform-independent/] 00:00 Let’s Start 00:22 Java Components 00:54 Java Virtual Machine (JVM) 02:22 Java Runtime Environment (JRE) 03:36 Java Development Kit (JDK) 04:17 Role of Setting Up the Path Variable 06:11 Source Code Compilation 06:50 Types of ClassLoader 08:41 Execution Engine 09:01 Just-In-Time (JIT) Compiler 09:33 Closing Notes WISH TO CONTRIBUTE VIDEOS ON GEEKSFORGEEKS? Please submit this Google Form - https://docs.google.com/forms/d/e/1FAIpQLScSVFlE-stz69M_l46xcwZlVRzDxT_91dlc-px5ytr7QHYmkQ/viewform Our courses: https://practice.geeksforgeeks.org/courses/ This video is contributed by Radhika Jhunjhunwala LinkedIn profile of the contributor - https://www.linkedin.com/in/radhika-jhunjhunwala-47264a175/ Please Like, Comment, and Share the Video among your friends. #java #jre #jvm #jdk #corejava #javabasics #learnjava #javadeveloper Install our Android App: https://play.google.com/store/apps/details?id=free.programming.programming&hl=en If you wish, translate into the local language and help us reach millions of other geeks: http://www.youtube.com/timedtext_cs_panel?c=UC0RhatS1pyxInC00YKjjBqQ&tab=2 Follow us on our Social Media Handles - Twitter- https://twitter.com/geeksforgeeks LinkedIn- https://www.linkedin.com/company/geeksforgeeks Facebook- https://www.facebook.com/geeksforgeeks.org Instagram- https://www.instagram.com/geeks_for_geeks/?hl=en Reddit- https://www.reddit.com/user/geeksforgeeks Telegram- https://t.me/s/geeksforgeeks_official Also, Subscribe if you haven't already! :)