IntelliJ supports UTF-8?

One of my colleague complained that the IntelliJ does not support UTF-8 correctly:

1. System.out.println("Dealer Caterpillar ciężkiego używanego wyposażenia i używanych części"); when you run it, the special character corrupted.
2. After you safe the java file, restart the Intellij, the special character corrupted.

Here is my trick: In Intellij Settings->General->Default encoding, choose UTF-8 and restart, the java file will be stored in UTF-8 encoding.