This is a blog like article with a FAQ for d3web developers transitioning from Eclipse to IntelliJ IDEA:

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!Adding new files and classes to version control automatically:

Go to File -> Settings -> Version control -> Confirmation -> When files are created. You're probably looking for "Add silently".

!Save actions like in eclipse

Edit -> Macros -> Start macro recording\\
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Now we record the actual macro simulating our Save actions:

# Code -> Reformat Code  (formats the code according to the code style/template, also allows to optimize inputs)
# File -> Save all
# Build -> Compile (compiles the changes which also causes them to be hot swapped when in debug)

Edit -> Marcros -> Stop macro recording\\
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After that, I bound the macro to "Cmd + Alt + S". This way I still have the normal save, but also the macro which does more...

!Show Javadoc

Use View -> Quick Documentation or the corresponding keyboard shortcut (depends on OS and Keymap).\\
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It's also possible to enable automatic JavaDoc popup on code completion in Preferences -> Editor -> Code completion (Autopopup documentation).