Java Web Start

What is Java Web Start?

The Java Web Start framework, also called JavaWS or JAWS (or more specifically known by programmers using this protocol as the Java Network Launching Protocol or JNLP) is developed by Oracle Corporation (formerly Sun Microsystems) that enables users to start applications written for the Java Platform straight from the Internet using a compatible browser. Because this is not part of the browser or the online application, a benefit of this technology allows seamless version updating for application and enhanced memory management and allocation for the Java virtual machine (VM).

Unlike Java applets – basically small applications that run inside a website’s code that typically provide Internet rich content – applications using the Java Web Start interface do not run inside the web browser, but runs under a separate framework of its own. This essentially bypasses compatibility problems with the browsers’ different Java plugins and differing Java Virtual Machine versions. However, like Java applets, Java Web Start is cross platform, and an open source implementation is also available as part of the OpenJDK.

Java Web Start can also access and launched unmodified Java applets packaged inside JAR files, and such files can also pass through applet parameters; these applets can then run on their own, separate frame.

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Download Java Web Start (external link)

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File types supported by Java Web Start

Our users primarily use Java Web Start to open these file types:

About file types supported by Java Web Start aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about which types of files Java Web Start can process, please do get in touch - we would love hearing from you.