* Java
  :PROPERTIES:
  :ANKI_DECK: soft-eng::java
  :END:

** In Java, how many bits are bytes, short, int and long?
   :PROPERTIES:
   :ANKI_NOTE_TYPE: Basic
   :ANKI_NOTE_ID: 1763087705395
   :ANKI_NOTE_HASH: 1f777ace85184d321501920a4871de59
   :END:

8, 16, 32, 64.

** How to erase the lowest bit in a word with a single operation?       :epi:
   :PROPERTIES:
   :ANKI_NOTE_TYPE: Basic
   :ANKI_NOTE_ID: 1763087705404
   :ANKI_NOTE_HASH: d449995a49d1e260ea13daa3357d83a8
   :END:

=x&(x-1)=

where =&= is bitwise and.