File extension JNLP
| File type | Java Network Launching Protocol Format |
| Developer | Oracle |
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What is a JNLP file?
The extension .JNLP refers to Java web start file. It is a network protocol file which helps a Java based application to be run on any user’s computer from the server. This file is mostly used by technicians.
The structure of the file was made on the principles of client-server architecture and the file is one of the important parts of the network layer stack for application communication. The .JNLP files are currently used by many of the Oracle’s proprietary business solutions as they allow remote application launches and deployment over the network. These files also support API for third part programming.
Program(s) that can open the .JNLP file
How to open JNLP files
If you cannot open the JNLP file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable software that supports JNLP among those that are installed on your device.
A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the JNLP file can be found in the table. Now just download and install the appropriate application.
Possible problems with the JNLP format files
The inability to open and operate the JNLP file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the Java Network Launching Protocol Format file. Below is a list of possible problems.
- Corruption of a JNLP file which is being opened
- Incorrect links to the JNLP file in registry entries.
- Accidental deletion of the description of the JNLP from the Windows registry
- Incomplete installation of an application that supports the JNLP format
- The JNLP file which is being opened is infected with an undesirable malware.
- The computer does not have enough hardware resources to cope with the opening of the JNLP file.
- Drivers of equipment used by the computer to open a JNLP file are out of date.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the JNLP file should operate with your programs without any problem. If the problem with the JNLP file has not been solved, it may be due to the fact that in this case there is also another rare problem with the JNLP file. In this case, the only you can do is to ask for assistance of a professional staff.
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How to associate the file with an installed software?
If you want to associate a file with a new program (e.g. my-file.JNLP) you have two ways to do it. The first and the easiest one is to right-click on the selected JNLP file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK. The second and more difficult to do is associate the JNLP file extension to the corresponding software in the Windows Registry.
Is there one way to open unknown files?
Many files contain only simple text data. It is possible that while opening unknown files (e.g. JNLP) with a simple text editor like Windows Notepad will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.