How can I start/run .jnlp on linux?

I have downloaded some application samples that have .jnlp extension. Actually, these are small JavaFX applications. And .jnlp should be run with Java Web Start.

Now, I have Xubuntu, jdk 1.7, Iced Tea Web Start installed, and when I try to open some of these applications in browser (I suppose Web Start should load), nothing happens. Am I missing something, or how else can I start .jnlp application on linux?

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2 Answers

In order to run a Java Network Launching Protocol (JNLP) you need to have the Java Web Start (JavaWS) software installed on your system. To verify, open the terminal and type:

javaws

At least for Debian-based Linux distribuitions, JavaWS is included within the icedtea-netx package. To install it using apt (package manager):

sudo apt install icedtea-netx

Some java dependencies might be needed. If so, apt will prompt you to.

Having every thing installed properly, just run:

javaws file.jnlp

1

From what I understand, a JNLP file is essentially an XML file with a link to the JAR file.

If you are unwilling to install other packages and simply want to run the program, just

• open the JNLP file in a text editor and find the link (or cat app.jnlp | grep href),
• download the .jar file associated with the homepage and the link (using wget for example),
• then java -jar app.jar.

See for more information.

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