Java Web Start without Java: How to Launch Enterprise JNLPs Without a Java Installation

Plenty of enterprises still depend on Java Web Start (JNLP) applications for core systems. While it’s been several years since Java Web Start was deprecated by Oracle, many teams are still relying on Java applications that are delivered by this method. Often, these applications are third-party, making it impossible to replace their deployment method.

CheerpJ JNLP Runner offers a long-term, maintainable alternative, without locking teams to legacy versions of Java, or to third-party alternatives. It lets Java applications run straight in the browser, with no plugin or local Java Desktop install needed. It works reliably across modern browsers, including Chrome and Edge.

Why It’s Time to Move Past Temporary Workarounds

JNLP (Java Network Launch Protocol) files were used to run Java applications via the Java Web Start protocol, an approach that was seen as a modern replacement to old-style Java Applets whenever applications needed to be delivered via the Web Browser.

With Java Web Start, the web page triggers the download of a JNLP file to the local system, which parses and launches it via the Java Web Start application, a standard part of OpenJDK until Java 8.

Starting from Java 9, Oracle deprecated Java Web Start, making the technology de facto outdated.

Many organisations adopted workarounds, such as dedicated virtual machines, remote desktop solutions or custom deployment hacks. Alternatively, they have relied on third-party Java Web Start providers or third-party Java distributions.

All these options come with a cost, in terms of maintenance overhead and poor user experience.

The Cost of Carrying On

Workarounds might have done the job at the time, but most of them were never meant to be permanent. Hosting and maintaining virtual machines eats into infrastructure budgets. RDP-based access slows users down and adds complexity for IT support. Every patch or update can become a coordination nightmare.

Then there’s the compliance headache. Running legacy Java versions often opens up questions around patching, security, and audit-readiness. Many IT teams are stuck maintaining fragile, outdated stacks simply to avoid disrupting business-critical applications.

CheerpJ JNLP Runner: Run Java Apps Without a Plugin

CheerpJ JNLP Runner is a browser-based runtime for launching JNLP applications directly, without requiring any Java installation or plugins.

Key Features:

No Java on the machine: Runs fully in-browser.
Works with modern browsers: Edge and Chrome
Supports complex Java apps: Including Swing, AWT and networking.
Enterprise-grade: Commercial support, SLAs and ongoing maintenance.

CheerpJ is a strategic alternative to legacy workarounds. It gives teams control and a better user experience.

How It Works

Point your existing JNLP file to the CheerpJ JNLP Runner.
The runner loads and executes the application in-browser.
No local Java install, no extra infrastructure.

Deploying through CheerpJ avoids the headaches of VMs, RDP environments or user-side Java dependencies.

A Simple Example: Internal Logistics System

One enterprise logistics team had a Java-based shipping and inventory dashboard built over a decade ago. When Java Web Start support was dropped, they moved the system onto a handful of dedicated virtual machines accessible over RDP. It worked, just about. But IT were constantly fielding performance complaints, login issues and VPN headaches.

They switched to CheerpJ JNLP Runner and now the same application launches in the browser with no setup, no RDP session and no support tickets. Performance is better, user feedback has improved, and IT can finally start retiring the legacy infrastructure.

Who Is It For?

Enterprises with internal Java applications
Teams tired of maintaining fragile deployment setups
Organisations needing a browser-native, long-term solution

Conclusion

If you’re still relying on a workaround to launch Java applications, it’s time to switch. CheerpJ JNLP Runner provides a supported, browser-native path forward that removes plugin dependencies for good.

No plugins. No Java installs. No more duct tape fixes.

Get started: https://cheerpj.com/cheerpj-jnlp-runner