IntelliJ says "Warning: java: foo/bar/Baz.java uses unchecked or unsafe operations", but it doesn't say in which line it is referring to

To compile with -Xlint:unchecked in IntelliJ IDEA:

• Go to Settings dialog (Ctrl+Alt+S or ⌘ +, )
• Select Compiler > Java Compiler

• Add following into the field Additional command line parameters:

  -Xlint:unchecked

• Run your compile again

IntelliJ IDEA 15

A faster solution:

• Press Ctrl + Shift + A

• Type "Additional com" and press Enter:

  

• Type -Xlint:unchecked > OK

  

• Press Ctrl + Shift + F9 to recompile (or go to Build > Compile ... )

  • you can select a class / module from the project tree to specify what you want to be recompiled

• You will see the line and the column where the problem appeared

  E.g.: Warning:(5,27) java: unchecked ...

I'm not sure why your IDE does not show you generic warnings, but you can try to compile with

-Xlint:unchecked

to get more details.