To be used related to file management hierarchical views or related to outlines having to do with computer files or applications. Programming questions related to Java Treeview (an Open Source, Extensible Viewer for Microarray Data in the PCL or CDT format) are off topic.

A tree view or an outline view is a graphical control element that presents a hierarchical view of information. Each item (often called a branch or a node) can have a number of subitems. This is often visualized by indentation in a list.

An item can be expanded to reveal subitems, if any exist, and collapsed to hide subitems.

Tree views are often seen in file manager applications, where they allow the user to navigate the file system directories. They are also used to present hierarchical data, such as an XML document.

Extended tree view is the central component of outliner applications, where each node consists of editable text.

source - https://en.wikipedia.org/wiki/Tree_view

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