Opening JNLP File in Java 6 JRE instead of JRE 7

java, java-web-start, windows

Solution

I have Java 6-based Java Web Start application ..How can I force JRE 6 just for this application?

Use an appropriate `version` attribute in the `j2se` element.

<resources>
    <!-- Any 1.6 JRE -->
    <j2se version='1.6*'>
    ...
</resources>

Warning

This solution no longer seems to work for installing earlier versions of the JVM!

The best reason I can think of for why it would fail to work is that Oracle is tiring of releasing security updates for earlier Java versions - so is forcing every user to use the latest JVM.

Problem

I have Java 6-based Java Web Start application that I need to open on a Windows machine. The machine has JRE 7 installed, with JRE 6 copied manually to the `Program Files` folder. The problem is that whenever I want to open the JWS application, it opens using Java 7. Even if I use the `javaws` executable from JRE 6, some properties still refer to JRE 7 files (I verified this by using `javaws -verbose app.jnlp`. How can I force JRE 6 just for this application?

Original source