RiverLayout makes it very simple to construct user interfaces as components are laid out similar
to how text is added to a word processor (Components flow like a "river".
A file that provides utility methods for creating form- or grid-style layouts with SpringLayout.
||StackLayout is a LayoutManager that arranges components in a vertical (or horizontal) strip
aligning them at right, left or centered, and/or filling them to take up any extra vertical or