What is the purpose of custom exceptions in Java?

The purpose of custom Java exceptions is to allow programmers to create and throw specific exceptions based on their needs, in order to better handle and manage exceptional situations. Custom exceptions can be used for the following purposes:
– to address unique situations
– to enhance error handling capabilities

1. Providing more specific exception information: By customizing exceptions, developers can provide more specific and detailed information to help pinpoint and resolve issues more accurately.
2. Differentiate between different types of exceptions: Various exception situations may arise in a program, custom exceptions can be used to categorize these exceptions, making exception handling clearer and more organized.
3. Flexibility in exception handling: Custom exceptions allow for customized exception handling logic based on specific circumstances, making the program more robust and reliable.
4. Code reusability: By using custom exceptions, the same exception class can be reused in different programs, improving the maintainability and reusability of the code.

In conclusion, custom exceptions can make the handling of exceptions in a program more precise and flexible, helping programmers better manage and resolve exceptional situations.