Represents a predicate (boolean-valued function) of one argument.
This is a functional interface
whose functional method is test(Object)
.
Public Method Summary
Predicate<T> | |
static <T> Predicate<T> |
isEqual(Object targetRef)
Returns a predicate that tests if two arguments are equal according
to
Objects.equals(Object, Object) . |
Predicate<T> |
negate()
Returns a predicate that represents the logical negation of this
predicate.
|
Predicate<T> | |
abstract boolean |
test(T t)
Evaluates this predicate on the given argument.
|
Public Methods
public Predicate<T> and (Predicate<? super T> other)
Returns a composed predicate that represents a short-circuiting logical
AND of this predicate and another. When evaluating the composed
predicate, if this predicate is false
, then the other
predicate is not evaluated.
Any exceptions thrown during evaluation of either predicate are relayed
to the caller; if evaluation of this predicate throws an exception, the
other
predicate will not be evaluated.
Parameters
other | a predicate that will be logically-ANDed with this predicate |
---|
Returns
- a composed predicate that represents the short-circuiting logical
AND of this predicate and the
other
predicate
Throws
NullPointerException | if other is null |
---|
public static Predicate<T> isEqual (Object targetRef)
Returns a predicate that tests if two arguments are equal according
to Objects.equals(Object, Object)
.
Parameters
targetRef | the object reference with which to compare for equality,
which may be null |
---|
Returns
- a predicate that tests if two arguments are equal according
to
Objects.equals(Object, Object)
public Predicate<T> negate ()
Returns a predicate that represents the logical negation of this predicate.
Returns
- a predicate that represents the logical negation of this predicate
public Predicate<T> or (Predicate<? super T> other)
Returns a composed predicate that represents a short-circuiting logical
OR of this predicate and another. When evaluating the composed
predicate, if this predicate is true
, then the other
predicate is not evaluated.
Any exceptions thrown during evaluation of either predicate are relayed
to the caller; if evaluation of this predicate throws an exception, the
other
predicate will not be evaluated.
Parameters
other | a predicate that will be logically-ORed with this predicate |
---|
Returns
- a composed predicate that represents the short-circuiting logical
OR of this predicate and the
other
predicate
Throws
NullPointerException | if other is null |
---|
public abstract boolean test (T t)
Evaluates this predicate on the given argument.
Parameters
t | the input argument |
---|
Returns
true
if the input argument matches the predicate, otherwisefalse