About Jmullion

Jmullion is a simple graphical user interface (GUIs) layout tool that generates Java source code. It can be used by beginning Java programmers who have not yet learned how to use the layout managers that are part of Java.

Jmullion is used like a traditional painting or drawing package. GUI components are literally drawn on the screen using the mouse. You can then move them around, re-size them, etc...

Layout in Jmullion

Jmullion allows you to put GUI components (e.g., buttons, labels, text areas) exactly where you want them. That is, each component has a precise (x,y)-position and a precise width and height. This is accomplished using the null layout manager in Java.

The advantage of this approach is that it is easy to understand and, hence, easy for beginning programmers to use.

The disadvantage of this approach is that the GUI will not be "dynamic". That is, it will not change over time (e.g., in repsonse to changes in the size of a window).

Starting Jmullion

Jmullion is a Java Applet. So, it runs inside of a browser. To start Jmullion, click on the link below:

Clicking on this link will replace this page with the one that contains Jmullion.

About the Name

A "mullion" is a dividing bar on a glass window. Hence, mullions are used to layout windows. Jmullion is used to layout windows (and other containers) in Java.

The Jmullion icon/logo is supposed to convey the feeling of a glass window with mullions.