T
- the type of the input to the predicate@FunctionalInterface public interface Predicate<T>
This is a functional interface whose functional method is test(Object)
.
Modifier and Type | Method | Description |
---|---|---|
default Predicate |
and |
Returns a composed predicate that represents a short-circuiting logical AND of this predicate and another. |
static <T> Predicate |
isEqual |
Returns a predicate that tests if two arguments are equal according to Objects.equals(Object, Object) . |
default Predicate |
negate() |
Returns a predicate that represents the logical negation of this predicate. |
static <T> Predicate |
not |
Returns a predicate that is the negation of the supplied predicate. |
default Predicate |
or |
Returns a composed predicate that represents a short-circuiting logical OR of this predicate and another. |
boolean |
test |
Evaluates this predicate on the given argument. |
boolean test(T t)
t
- the input argumenttrue
if the input argument matches the predicate, otherwise false
default Predicate<T> and(Predicate<? super T> other)
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.
other
- a predicate that will be logically-ANDed with this predicateother
predicateNullPointerException
- if other is nulldefault Predicate<T> negate()
default Predicate<T> or(Predicate<? super T> other)
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.
other
- a predicate that will be logically-ORed with this predicateother
predicateNullPointerException
- if other is nullstatic <T> Predicate<T> isEqual(Object targetRef)
Objects.equals(Object, Object)
.T
- the type of arguments to the predicatetargetRef
- the object reference with which to compare for equality, which may be null
Objects.equals(Object, Object)
static <T> Predicate<T> not(Predicate<? super T> target)
target.negate()
.T
- the type of arguments to the specified predicatetarget
- predicate to negateNullPointerException
- if target is null
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/function/Predicate.html