The Exception is when an event occurs during the execution of a program that disturbs the flow of the program and stops the execution of the program. Exception handling is the mechanism to handle this runtime exception. In Exception handling, the developer writes code to catch the error from code and show it when it occurs, which maintains the normal flow of the program. In java, a built-in class defines a structure of Exception, and we can make our user-defined exception handling class handle such errors.
Exception handling is used in the Java language, where a built-in class ‘Exception’ provides the structure to make our user-defined exceptions. Exception handling mechanisms maintain the flow, which leads to the normal execution flow of programs and shows the exceptions with their types. To learn to implement this mechanism, you need to learn the Java language, which helps you understand exception handling mechanisms. Various platforms allow you to learn java online.