The easiest way to check is
entity == null. There is no shorter way to do that.
Note that there is a method for this in the standard lib:
And another one which is the opposite of the above one:
And there is yet another one which can be used to force a value to be not
null, it throws a
Note: The Objects class was added in Java 7, but the
nonNull() methods were added only in Java 8.