2018
Evans - Optimizing Java
    836A1C83D6790023853AB4C6EBB5432D
    !!! a lot of low-level stuff
    626A82E0261A2D33839C8680CCE8A561
    ! ru
Urma - Modern Java in Action 2nd ed
Sharan - Java Language Features 2nd ed
Farrell - Java Programming 9th ed
Horstman - Core Java SE 9 for the Impatient 2nd ed