Understanding java.lang.ClassNotFoundException in Java: Causes, Solutions, and How to Avoid It Table of Contents What is ClassNotFoundException in Java? Definition of ClassNotFoundException How ClassNotFoundException Occurs Causes of ClassNotFoundException in Java How to Avoid ClassNotFoundException in Java ClassNotFoundException vs NoClassDefFoundError Conclusion Frequently Asked Questions (FAQs) What is ClassNotFoundException in Java? In Java, the ClassNotFoundException is a runtime exception that occurs when the Java Virtual Machine (JVM) or any of its class loaders cannot find the class that is requested during the execution of a program. Unlike compile-time errors that are detected before running a program, the ClassNotFoundException occurs while the program is running, when a class is dynamically loaded and cannot be found. Definition of ClassNotFoundException The ClassNotFoundException is thrown when an application or JVM attempt...