java - Cannot be resolved error in JavaEE project -


i doing semestral project. opened javaee file , had issue, fine on friday last time opened can see dbao shows has none. says cannot resolved. file meant connect mysql database.

  1. restart eclipse
  2. project -> clean -> clean projects followed project -> build all
  3. right click on error project -> properties -> java build path -> check build path missing, looked jre missing, try selecting right or existing jre

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