I use eclipse but now I am trying out intellij, as is the way with software, its not a one size fits all. In eclipse I select search in filename I can put the name of the file, filename.java select search in the search window, it will come up , just cick on it, it will open, you can even right click and show in package.
Not just multi-file find. The find-within-file function is now pretty awful.
This is especially annoying because traditionally one of the big selling (literal) points about IntelliJ was that it was so helpful for common application development. So mucking up search/replace, which is one of THE most common editing functions really stinks.
On top of that, Android development can put a severe hurt on system performance and I'm not running a Pentium 250 here.
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I don't know in which way you exactly used search functionality, but in IntelliJ IDEA you can search within:
Edit -> Find -> Find in Files a. project
In particular about the files. If I know the filename, I'd normally navigate first to a file "cmd (ctrl) + shift + o" and then simply "cmd (ctrl) + f".
And if you don't know the file, then search within the project works great, and that is the feature suffice me in majority of my search uses cases.
It sounded to me like the question was not about how to search for text, but rather, how to find a file with a particular name. If that's the case:
Go to Navigate -> File and type the name you're looking for.
Note also that it tells you the keyboard shortcut, which on my Mac is shift-command-N. On Windows it's... something similar I guess. I use this all the time, along with command-N to find a class by name.