# Compilation errors

**URL:** <https://forum.codewithmosh.com/t/compilation-errors/3664>\
**Category:** Java\
**Created:** [March 29, 2021, 8:48pm UTC](https://forum.codewithmosh.com/t/compilation-errors/3664 "2021-03-29T20:48:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jeen](https://avatars.discourse-cdn.com/v4/letter/j/49beb7/32.png) [@jeen](https://forum.codewithmosh.com/u/jeen)\
**Post date:** [March 29, 2021, 8:48pm UTC](https://forum.codewithmosh.com/t/compilation-errors/3664/1 "2021-03-29T20:48:34Z")

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Hi, I am trying to run the ultimate Java 3 project but I get compilation errors with every file.  
Can you please upload instructions of how to set the configuration to run this project?  
Thanks in advance

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**Author:** ![jeen](https://avatars.discourse-cdn.com/v4/letter/j/49beb7/32.png) [@jeen](https://forum.codewithmosh.com/u/jeen)\
**Post date:** [March 29, 2021, 9:38pm UTC](https://forum.codewithmosh.com/t/compilation-errors/3664/2 "2021-03-29T21:38:13Z")

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How does Mosh runs the project?  
do each folder has to have a main class?

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**Author:** ![jmrunkle](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.codewithmosh.com/jmrunkle/32/3765_2.png) [@jmrunkle](https://forum.codewithmosh.com/u/jmrunkle)\
**Post date:** [August 17, 2022, 11:26pm UTC](https://forum.codewithmosh.com/t/compilation-errors/3664/3 "2022-08-17T23:26:52Z")

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Could you clarify what sorts of errors? Perhaps a specific file and the error you are getting?