If I reach absorption concentration are the hindrances fully gone? I am studying the jhanas and it says you can enter jhana without fully purifying the hindrances. I thought you can't reach the jhana without first fully suppressing the hindrance. How does one do that?

Here's what the book said.


  When a bhikkhu enters upon a jhána without [first] completely
  suppressing lust by reviewing the dangers in sense desires, etc., and without
  [first] completely tranquillizing bodily irritability37 by tranquillizing the body,
  and without [first] completely removing stiffness and torpor by bringing to
  mind the elements of initiative, etc., (§55), and without [first] completely
  abolishing agitation and worry by bringing to mind the sign of serenity, etc.,
  [152] and without [first] completely purifying his mind of other states that
  obstruct concentration, then that bhikkhu soon comes out of that jhána again,
  like a bee that has gone into an unpurified hive, like a king who has gone into an
  unclean park.
It depend on whether you practice Samatha or Vipassana.
In Samatha practice you suppress the hindrances.
They are fully eradicated by Vipassana practice and following Noble Eightfold Path.