# My new tiny library "does not exist"

**URL:** <https://discourse.processing.org/t/my-new-tiny-library-does-not-exist/12989>\
**Category:** Libraries\
**Created:** [July 26, 2019, 12:44am UTC](https://discourse.processing.org/t/my-new-tiny-library-does-not-exist/12989 "2019-07-26T00:44:17Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![tove](https://avatars.discourse-cdn.com/v4/letter/t/cdc98d/32.png) [@tove](https://discourse.processing.org/u/tove)\
**Post date:** [July 26, 2019, 5:02am UTC](https://discourse.processing.org/t/my-new-tiny-library-does-not-exist/12989/3 "2019-07-26T05:02:32Z")

</div>

I did read both of those – I wouldn’t have made it this far without them 🙂 – but I’m not seeing where I’m diverging from the instructions. I also tried to read through this forum thread: [Including shared pde files across projects](https://discourse.processing.org/t/including-shared-pde-files-across-projects/1701/8) (though I got a little lost in which things did and did not work) and I _think_ what I have follows the example in [https://github.com/GoToLoop/Processing\_Jar\_Creation](https://github.com/GoToLoop/Processing_Jar_Creation)

But I’m not in any sense a Java developer so it’s entirely possible I got the “building the .jar” part wrong, since that’s the part that’s glossed over in the Wiki entry. What I did was run, in a directory containing only `name.java`:

```auto
javac -d ./build -classpath /Applications/Processing/Processing.app/Contents/Java/core/library/core.jar:/Applications/Processing/Processing.app/Contents/Java/modes/java/libraries/net/library/net.jar *.java
cd build
jar cvf name.jar *

```

Do I maybe need other things in that directory when I make the .jar?

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