How to include java swing JProgressBar in a .exe file

I need to compile a .m file in which I have included a java swing JProgressBar. The problem is, no matter what, the compiler excludes this element even writing "javaaddpath('directory')" and "import('javax.swing.JProgressBar')". Anyone can help me?

Thanks a lot.

[Walter Roberson]

It seems to be documented to work

• https://www.mathworks.com/matlabcentral/answers/96795-how-do-i-set-the-java-classpath-for-stand-alone-applications-created-using-matlab-compiler
• https://www.mathworks.com/matlabcentral/answers/99903-why-does-my-compiled-application-not-locate-a-matlab-built-in-java-class-with-matlab-compiler-4-0-r
• https://blogs.mathworks.com/loren/2008/08/11/path-management-in-deployed-applications/