CheerpJ allows organizations to modernise their Java applications by making them usable from modern browsers, without needing a local JVM installation.
It has extensive compatibility with Java 8*, including file access, networking, clipboard, and many other system features. It is compatible with Java Swing, Oracle Forms, Oracle EBS, and any other framework or library. Other Java versions can be supported according to your needs.
*Tested on Oracle Forms, EBS, Swing, AWT and numerous frameworks and libraries.
With CheerpJ Organisations with products based on Java can migrate applications to HTML5 or the cloud with minimal or no effort, making them accessible from modern browsers, without a local Java installation.
CheerpJ allows a fully automated, full or partial migration of an existing Java client to a browser-based web application.
CheerpJ can run Java Applets, Java Web Start applications, stand-alone Java applications (including Swing), and Java libraries, on any modern browser that supports WebAssembly.
CheerpJ is the only full Java Runtime Environment for the browser, extensively compatible with Java SE and equipped with a full build of the OpenJDK JRE. By using CheerpJ, you will not need to modify your application – it will just work on any browser, without a local Java installation.
You can use CheerpJ in two scenarios:
Yes. CheerpJ is used by many organizations worldwide to run Oracle Java-based products, such as Oracle Forms and Oracle E-Business Suite, on modern browsers. This includes several Fortune 500 companies as well as local and federal government agencies.
CheerpJ is a full JVM in WebAssembly, running client-side within the browser sandbox. It has no native or server-side components. As such, it benefits from the Web security model, drastically improving the application security profile compared to standard Java applications.
A superb extension with great customer support! We have an large, extensive applet that displays automated weather reports from commercial aircraft that is used by weather services world-wide. Thanks to CheerpJ we can now run it again in a browser (chrome). The CheerpJ version is FAST, able to display 800,000+ wind barbs in just a couple of seconds. We’re very happy indeed.
Fantastic job. My large JAVA applet for a visual interactive discovery of derivatives and integrals of vector fields had been used all around the world for almost 20 years — then the browsers effectively killed it by withdrawing support for JAVA. I had not been able to rewrite it as a freestanding JAVA main program. So happy when I discovered CheerpJ in the spring. So many happy students, instructors, and folks from everywhere who just to play and discover!
Matthias Kawski
This is great! I had a set of online “animated diagrams” as Java applets since about 1999. Over the years, support for Java in browsers has disappeared due to security concerns. Now I can see my old applets again.
Craig Reynolds
Simply amazing simplicity and effectiveness. Very useful with old switches that only have a Java Applet interface and other similar appliances. Great job!
Gianluca Bonetti
The Java Applet I am using looks and behaves very similarly under CheerpJ on a modern computer, vs an ancient computer with an old browser that actually runs Java applets. Performance is good, too. Five stars!
Leaning Technologies coupled their clear ability to extend their toolset to support the ultimate software challenge with an unwavering determination to achieve the level of perfection required. After an intense but relatively short period, Blackbird was able to ship our [HTML] product to clients globally.
Stephen Streater
R&D Director, Blackbird PLC
Discover how to modernize and improve access to your legacy Java applications with CheerpJ.
Schedule a free demo with our team to learn how CheerpJ can help address your Java requirements.
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