IntelliJ System.out.println() - Cannot resolve method println(java.lang.String) -

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i using intellij idea, learning java. went until yesterday, when mentioned error occurred.

i didn't make changes. looking solution following ways:

  1. reboot pc
  2. restart intellij.
  3. delete project directory , use 1 (both on desktop)

nothing helps. buy running simple hello world method. keeps showing error:

screenshot

is there able me?

ok, solved.

file -> invalidated caches / restart


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