What are some scenarios where anonymous functions in Java are used?

1. Event handling: In GUI programming, anonymous functions can be used as event listeners to simplify code logic.
2. Multithreading: You can use anonymous functions to create new threads or carry out concurrent tasks.
3. Data processing: Anonymous functions can be used in collection operations or data processing to simplify code, such as with the stream API for data processing.
4. Callback function: Allows the passing of anonymous functions as parameters to other methods, used for callback operations.
5. Interface implementation: Anonymous functions can be used when implementing interfaces or abstract classes to reduce the amount of code.
6. Lambda expressions: Java 8 introduced Lambda expressions, allowing the use of Lambda expressions to implement anonymous functions and simplify code writing.
7. Event-driven programming: anonymous functions can be used to handle different events in event-driven programming.

In general, anonymous functions can be used in places where concise, flexible, and reusable code logic is needed, making the code easier to read and maintain.