# Which version of Processing for an older version of Java?

**URL:** <https://discourse.processing.org/t/which-version-of-processing-for-an-older-version-of-java/8976>\
**Category:** Development\
**Created:** [March 5, 2019, 4:02pm UTC](https://discourse.processing.org/t/which-version-of-processing-for-an-older-version-of-java/8976 "2019-03-05T16:02:43Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![maathieu1](https://avatars.discourse-cdn.com/v4/letter/m/4af34b/32.png) [@maathieu1](https://discourse.processing.org/u/maathieu1)\
**Post date:** [March 5, 2019, 4:02pm UTC](https://discourse.processing.org/t/which-version-of-processing-for-an-older-version-of-java/8976/1 "2019-03-05T16:02:44Z")

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Hello everyone!

This is a bit of a strange question - please bear with me.

I have set my hands on an old Windows CE palmtop which happens to run JRE 1.5 (certain, and possibly JRE 1.6).

I was wondering if I could develop a simple Processing sketch that would run on this version of Java.

I know current Processing sketches (as exported from the latest 3.5.3) can run using JRE 1.8.0\_74.

Should I try developing with an earlier version of Processing? If so, which one? Or, can I rebuild the Processing libraries with J2SE 1.6 (since they only use the syntax for that version) and then manually compile my Processing 3 sketch?

Many thanks in advance,

m

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**Author:** ![GoToLoop](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/gotoloop/32/86_2.png) [@GoToLoop](https://discourse.processing.org/u/GoToLoop)\
**Post date:** [March 5, 2019, 4:40pm UTC](https://discourse.processing.org/t/which-version-of-processing-for-an-older-version-of-java/8976/2 "2019-03-05T16:40:26Z")

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[Download.Processing.org/processing-1.5.1-windows-expert.zip](http://Download.Processing.org/processing-1.5.1-windows-expert.zip)

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**Author:** ![maathieu1](https://avatars.discourse-cdn.com/v4/letter/m/4af34b/32.png) [@maathieu1](https://discourse.processing.org/u/maathieu1)\
**Post date:** [March 6, 2019, 10:18am UTC](https://discourse.processing.org/t/which-version-of-processing-for-an-older-version-of-java/8976/3 "2019-03-06T10:18:11Z")

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Thanks :). I will look into it. Pity that the language reference for that old version is not online anymore… I’ll see how I can backport my sketch (it’s a simple one).

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**Author:** ![GoToLoop](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/gotoloop/32/86_2.png) [@GoToLoop](https://discourse.processing.org/u/GoToLoop)\
**Post date:** [March 6, 2019, 2:09pm UTC](https://discourse.processing.org/t/which-version-of-processing-for-an-older-version-of-java/8976/4 "2019-03-06T14:09:45Z")

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> [@maathieu1](#):
>
> Pity that the language reference for that old version is not online anymore…

Go: “Help” ➡ “Reference”. 📘