[1.10.2] IntelliJ "Run Minecraft Client" Not Working

[Osuology]

I have setup gradle for intellij, as the README.txt tells you to. I have generated the intellij runs, and have refreshed dependencies. After running minecraft client, I get the following error:

 

Exception in thread "main" java.lang.ClassNotFoundException: GradleStart

at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:264)

at com.intellij.rt.execution.application.AppMain.main(AppMain.java:123)

Java HotSpot 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

 

I understand what it means, and I'm pretty sure GradleStart isn't the right class to start minecraft with, but net.minecraft.Launcher.Launch isn't working. As a matter of fact, intellij doesn't recognize any of the vanilla packages at all for some reason.

[Choonster]

Have you set the module for each run configuration?

 

I'd recommend following

to set up your IDEA project.

[Osuology]

Ah, so my problem was not setting one part of the config for the application settings. Set "Use classpath of module" to <whatever>_main fixed everything. Thanks for linking that video!