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Editorial Team
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Asked: 2026-06-05T21:55:31+00:00

I’m using Install4J mostly for it’s great jar file optimization and support for pack200.

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I’m using Install4J mostly for it’s great jar file optimization and support for pack200. The main hiccup I’m running up against is that we have several native libraries that are 32-bit only. We need to run with a 32 bit JVM for those to work, ideally dynamically downloding one and installing it when one’s not there.

The case that’s tricky is when there is a JVM installed above the minimum version we need, but that’s 64-bit instead of 32-bit. Any way we can detect that and download and install a 32-bit JVM to run with instead?

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1 Answer

  1. Editorial Team

    I actually had missed the fact that Install4J already handles this. Since the launcher itself is 32 bit, Install4J requires a 32 bit JVM. So it downloads one automatically if it’s not there.

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