General Class Utilities
It contains among other stuff:
a utility to lock resource based on an id and not actual object. https://anotheria.net/blog/uncategorized/id-based-locking/
CryptTool for basic encryption/decryption utilities.
A utility to analyze java histogramms.
A utility to process tasks in a background thread.
An utility to cut results sets in chunks (segments) for paging.
An implementation of a quick sort algorithm which supports sorting by different attributes of an object (sortType) and direction (sortOrder).
Generates random long ids for different purposes.
and so on.
...