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Use ^N (Alt + Insert) everywhere to create folders, classes or generate
getters, test methods, etc.
Use ??F12 (Ctrl + Shift + F12) to expand the editor and hide tool windows.
Always use ??? (Ctrl + Shift + Enter) to complete statement.
Press ?, (Ctrl + Alt + S) to open settings quickly.
Use default live templates or create custom ones. Use ? to complete live
template.
Use ?? (Alt + Enter) for a quick-fix.
Use ?^L (Ctrl + Alt + L) to format code. IntelliJ IDEA has advanced
formatter and smart code arranger options for all supported languages and
frameworks.
Use ??T (Shift + Ctrl + T) to create or navigate to the test for current
class. This is a time-saver when you adopt test-driven development.
Use ??V (Ctrl + Alt + V) to introduce a variable quickly. No need in
selection. IntelliJ IDEA is smart enough to guess what you want at the
moment.
Use code completion twice to get more results. This includes completion of
static methods without typing class name (and not only).
Use ??C (Ctrl + Alt + C) to introduce a constant quickly. IntelliJ IDEA
will find and replace all code duplicates if you use ?A.
Use ?^F10 (Ctrl + Shift + F10) to run code at the caret.
Use ??? (Alt + Left) and ??? (Alt + Right) to navigate between open tabs.
Jump to float navigation bar with ?? (Alt + Home). This is the most
convinient way to navigate between packages. It supports other shortcuts
like create class, folder, etc.
Use ?F10 (Shift + F10) to run the active run configuration.
Use ?E (Ctrl + E) for navigation between recent files. It supports speed
search. Just start typing file or tool window you need and it will filter
the results.
Use ?1 (Alt + 1) to show or hide the project view.
http://blogs.jetbrains.com/idea/2012/10/intellij-idea-productivity-tips-part-1/
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