IntelliJ IDEA code completion on Java External Library

Asked Mar 08 '16 at 00:41

Active Mar 08 '16 at 00:41

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I imported some java external libraries. I'm trying to configure my "IntelliJ IDEA 15 CE" code-completion feature to pick up the classes and methods in these external libraries.

I spent a couple hours trying to figure this out, so is this even possible?

Thanks.

asked Mar 08 '16 at 00:41

goswamibu

IntelliJ should pick them up when you add the jars to either the `dependencies` tab (in module settings), or as project or global libraries. – Xiongbing Jin Mar 08 '16 at 00:55
I've done all that. It works because the external libraries are listed on the sidebar, but it doesn't seem to translate into code-completion. – goswamibu Mar 08 '16 at 00:59
Have you tried this? http://stackoverflow.com/questions/6652540/rebuild-intellij-project-indexes – Xiongbing Jin Mar 08 '16 at 01:03
Does it have to be a certain file type and not .java or .class files? Thanks! – goswamibu Mar 08 '16 at 01:04
.jar, .java, .class should all work – Xiongbing Jin Mar 08 '16 at 01:06
I saw that post and it didn't work. – goswamibu Mar 08 '16 at 01:07
Is there something else should I do in addition to adding the jars to the dependences table in the module settings or as libraries? – goswamibu Mar 08 '16 at 01:12
Have you checked the settings to make sure autocompletion is on? in Editor > General > Code Completion – Xiongbing Jin Mar 08 '16 at 01:13
Yes, but there doesn't seem to be the option of whether to turn code completion on or off. It still works for the basic methods, but none of the external library methods. – goswamibu Mar 08 '16 at 01:17
If you don't have any important settings, try delete the settings folder (`.IdeaIC15` in your home folder, might be hidden), and see if that makes a difference. – Xiongbing Jin Mar 08 '16 at 01:19
I'm not finding it in my mac. I also re-installed it just a minute ago, and still got the same results. – goswamibu Mar 08 '16 at 01:22
See this link for the folder locations https://intellij-support.jetbrains.com/hc/en-us/articles/206544519-Directories-used-by-the-IDE-to-store-settings-caches-plugins-and-logs – Xiongbing Jin Mar 08 '16 at 01:26
Okay i found it. But this makes me a little nervous. Why would deleting .IdeaIC15 solve the issue? – goswamibu Mar 08 '16 at 01:28
Just wondering if some settings might be messed up. You can back them up before deletion. – Xiongbing Jin Mar 08 '16 at 01:30
I just did that. No luck. Just reinstalled it again to be safe. – goswamibu Mar 08 '16 at 01:38
I guess it's not a feature of the community edition. – goswamibu Mar 08 '16 at 01:58
Auto completion definitely works on community edition. Works here with no problem. Unfortunately cannot help you figure out the problem. – Xiongbing Jin Mar 08 '16 at 02:02
It's all good. I decided to switch to eclipse several minutes ago and it works perfectly. Thank you for your help. – goswamibu Mar 08 '16 at 03:42

IntelliJ IDEA code completion on Java External Library

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