How to resolve 'classnotfoundexception' in java?

`ClassNotFoundException` is thrown when the Java Runtime System cannot find a class definition that was used in the code. Example:

Class.forName("com.nonexistentpackage.NonExistentClass");

Solution:

// Make sure the class exists and is in the classpath.

This exception typically indicates a missing JAR or a misconfigured classpath. Always ensure that all necessary classes and JARs are available in the runtime environment.