The JavaFX TreeTableView enables you to display trees in JavaFX, and for each node in the tree you can have a row of column values displayed next to it.
The JavaFX TreeView enables you to display trees which can have the nodes expanded and collapsed inside your JavaFX applications.
I have updated my Java Collection interface tutorial. The Java Collection interface is one of the core interfaces in the Java Collections API.
I have formalized my guiding sentence containing my three rules for achieving software elegance - functionally elegant software - in this latest tutorial touching the subject of usability.