Latest News

J42 is now available as a:
  • Windows installable Desktop Application
  • Server application providing HTML pages
  • Java Applet
  • Java Application
Since Oracle's release of Java 11 in September 2018 the Java environment has changed.
New J42 versions allow you to upgrade to the latest technology while still using your existing configuration.
Contact us at to hear about the new features and facilities.

Welcome to J&B Computing Services - Home of secure dynamic solutions.

Today we are featuring J42™ for Application Access - our solution for the dynamic GUI rendering of your existing legacy systems.

J42™ for Application Access

Taking longer than you expected to rebuild your legacy system ? If only you could replace the user interface and improve the usability of the system then you can keep using your legacy system while you work on your long term strategic goals. Using J42, in a few hours you can transform your system with a value added web based GUI.

Example of dynamic GUI transformation of your legacy screens

J42 for Application Access provides a dynamic rendering of the "green" or "black" screen of the IBM Mainframe, System i (AS/400) or HP Non-Stop Server through a Web browser. Literally without any change to your existing application you can benefit from the "out-of-the-box" dynamic GUI facilities of J42 to provide your end-users with the screen that they never thought they would see when they access their IBM Mainframe, System i (AS/400) or HP Non-Stop Server applications from a Web browser.