# Can't run Kotlin program - necessary to edit configuration

**URL:** <https://discuss.kotlinlang.org/t/cant-run-kotlin-program-necessary-to-edit-configuration/4685>\
**Category:** Uncategorized\
**Created:** [September 21, 2017, 4:27pm UTC](https://discuss.kotlinlang.org/t/cant-run-kotlin-program-necessary-to-edit-configuration/4685 "2017-09-21T16:27:38Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![fsn761304](https://avatars.discourse-cdn.com/v4/letter/f/ea666f/32.png) [@fsn761304](https://discuss.kotlinlang.org/u/fsn761304)\
**Post date:** [September 21, 2017, 4:27pm UTC](https://discuss.kotlinlang.org/t/cant-run-kotlin-program-necessary-to-edit-configuration/4685/1 "2017-09-21T16:27:38Z")

</div>

I downloaded latest IDEA, Ubuntu 16.04. I thought it supposed just to work - of out the box. I tried to run ‘hello world’, but when I click ‘run’ it proposes me to edit configurations.

---

<div class="post-metadata">

**Author:** ![yole](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.kotlinlang.org/yole/32/1425_2.png) [@yole](https://discuss.kotlinlang.org/u/yole)\
**Post date:** [September 21, 2017, 4:29pm UTC](https://discuss.kotlinlang.org/t/cant-run-kotlin-program-necessary-to-edit-configuration/4685/2 "2017-09-21T16:29:07Z")

</div>

To run the program, click on the gutter icon, as described in the [tutorial](http://kotlinlang.org/docs/tutorials/getting-started.html).

---

<div class="post-metadata">

**Author:** ![fsn761304](https://avatars.discourse-cdn.com/v4/letter/f/ea666f/32.png) [@fsn761304](https://discuss.kotlinlang.org/u/fsn761304)\
**Post date:** [September 21, 2017, 11:11pm UTC](https://discuss.kotlinlang.org/t/cant-run-kotlin-program-necessary-to-edit-configuration/4685/3 "2017-09-21T23:11:19Z")

</div>

I don’t have such:

 ![Screenshot_2017-09-22_03-09-07](https://us1.discourse-cdn.com/flex019/uploads/kotlinlang/original/2X/f/f03cf290f9373df7482adb4f0d1112ae715a1cb0.png)

---

<div class="post-metadata">

**Author:** ![ilogico](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.kotlinlang.org/ilogico/32/3725_2.png) [@ilogico](https://discuss.kotlinlang.org/u/ilogico)\
**Post date:** [September 22, 2017, 4:37am UTC](https://discuss.kotlinlang.org/t/cant-run-kotlin-program-necessary-to-edit-configuration/4685/4 "2017-09-22T04:37:58Z")

</div>

Write the main function outside the class. Right now, it is an instance method, not suitable to be run as main.

---

<div class="post-metadata">

**Author:** ![fsn761304](https://avatars.discourse-cdn.com/v4/letter/f/ea666f/32.png) [@fsn761304](https://discuss.kotlinlang.org/u/fsn761304)\
**Post date:** [September 22, 2017, 7:55am UTC](https://discuss.kotlinlang.org/t/cant-run-kotlin-program-necessary-to-edit-configuration/4685/5 "2017-09-22T07:55:43Z")

</div>

Thanks guys. It works now.