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jnlp extension

gong pex
Ranch Hand

Joined: Oct 27, 2011
Posts: 42
Hello everyone,

Today I found file from oracle that can be executed with only double clicks,

But, the extension is .jnlp not .jar, what is the .jnlp?

I think .jar file cannot be executed with only double click, because I had tried several times but still failed.

please someone answer to what is .jnlp and how to create it?

By the way, I feel either of my post had deleted by moderator, the title is "java EXE" whereas I still have some question from it.

Ganesan Ponnusamy
MyExamCloud Support
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Joined: Nov 07, 2005
Posts: 264
What is executable JAR file?

An executable JAR file invoke the application main class when the user performs double click. The same can be runnable by java -jar <jarfilename> command.

How to create executable JAR file by manually?

Create manifest.MF to point your main class.

Ex: Main-Class: com.epractizelabs.librarymanager.LibraryMain

Run the JAR command

jar -cvmf Manifest.MF yourapplicationname.jar *.*

What is JNLP?

JNLP refers Java Network Launching Protocol and it is defined with an XM scema. It has info about how to launch Java Web Start applications.

Ganesan P
MyExamCloud for Java SE Certifications, Java EE Certifications and Java ME Certification Preparation.
gong pex
Ranch Hand

Joined: Oct 27, 2011
Posts: 42
Ooh, I think there is misunderstand here,

that I mean executable file, is the file or application that can be run only by click or double click,

not, I need to go to command prompt and I must write:

or I must write or run something. (+_+)

just like an installer. . . .
I agree. Here's the link:
subject: jnlp extension
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