Jan 2, 2026 · This tutorial explains what a JNLP file is and how to open it on MacOS, Windows 10 and other Windows versions, and also open it using Chrome and Firefox. This example shows the basic outline of the JNLP file with settings for application attributes. The root element is jnlp, which has four subelements: information, security, resources, and application-desc. Apr 18, 2022 · A JNLP file is a Java Web Start (JWS) file, saved in the Java Network Launching Protocol (JNLP) format. It contains XML information used to launch and manage a Java program (.JAR file) over a network. May 29, 2024 · Discover how to easily open JNLP files on Windows 11 with our step-by-step guide. Get started with essential tips and troubleshooting advice. A JNLP file contains a script which Java Web Start application deployment technology uses to download and run a Java web application outside the browser. The contents of a JNLP file are written in Extensible Markup Language in accordance with Java Network Launching Protocol. Jul 22, 2024 · Java is a programming language that uses the JNLP file format to launch and manage various Java applications over a network or the Internet. The JNLP files are saved in the XML file format and contain information about an application written in Java, e.g., where to download it and how to launch it. Mar 13, 2025 · In the world of computing, file extensions play a critical role in determining how files are processed and used. Among these file types, .JNLP (Java Network Launch Protocol) files are essential for launching Java applications over a network or the web. JNLP (Java Network Launching Protocol) files are XML-based configuration files used by Java Web Start (JWS) to launch Java applications over a network. They contain instructions on how to locate, download, and execute a Java application. Jan 3, 2024 · In order to run and launch a Java Network Launch Protocol (JNLP) file on Windows, you first need to install Java on Windows and finally

if not done by default, set the Java (TM) Web Start Launcher (javaws.exe binary) as default app to open these files. Dec 7, 2025 · A file with a .JLNP file extension is created in the Java Network Launching Protocol (JNLP) format. JNLP files are formatted in XML and used for launching and managing Java programs on the Internet or as standalone applications over a private network.