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@GwtCompatible public interface Predicate<T>
Determines a true or false value for a given input.
Method Summary | |
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boolean |
apply(T input)
Returns the result of applying this predicate to input . |
boolean |
equals(Object object)
Indicates whether another object is equal to this predicate. |
Method Detail |
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boolean apply(@Nullable T input)
input
. This method is generally
expected, but not absolutely required, to have the following properties:
Objects.equal
(a, b)
implies that predicate.apply(a) ==
predicate.apply(b))
.
NullPointerException
- if input
is null and this predicate does not accept null
argumentsboolean equals(@Nullable Object object)
Most implementations will have no reason to override the behavior of Object.equals(java.lang.Object)
.
However, an implementation may also choose to return true
whenever object
is a
Predicate
that it considers interchangeable with this one. "Interchangeable"
typically means that this.apply(t) == that.apply(t)
for all t
of type
T
). Note that a false
result from this method does not imply that the
predicates are known not to be interchangeable.
equals
in class Object
object
- the reference object with which to compare.
true
if this object is the same as the obj
argument; false
otherwise.Object.hashCode()
,
Hashtable
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