What is exceptions overview in Java?

In Java, exceptions are events that disrupt the normal flow of the program's execution. They indicate that an error has occurred and provide a way to handle those errors gracefully. Exceptions can be caused by various factors, such as invalid user input, file not found errors, or division by zero. Java has a robust exception handling framework, which includes the use of try-catch blocks to manage exceptions effectively.

There are two types of exceptions in Java: checked exceptions and unchecked exceptions. Checked exceptions are checked at compile time, while unchecked exceptions occur at runtime. It's essential to handle exceptions to prevent the program from crashing and to provide feedback to the user regarding the error.

Developers can create custom exceptions to cater to specific application needs, allowing for more flexible error management.