User-defined exceptions in Java are exceptions that are created by the programmer to handle specific error conditions in their code. These exceptions allow developers to define and raise customized error messages that better convey the nature of the problem occurring in the program.
On the other hand, we can also create user-defined unchecked exceptions by extending the
RuntimeException class. Unchecked exceptions do not require explicit handling, and the compiler does not enforce catching or declaring them, making them more convenient for certain situations.
While creating user-defined exceptions, it is generally recommended to create unchecked exceptions by extending the
RuntimeException class. This is because checked exceptions may impose more boilerplate code, making the code less concise and more cumbersome to handle in some scenarios.
By creating user-defined exceptions, developers can add meaningful and informative error messages to their applications, improving code readability and helping to identify and handle specific error conditions more effectively.