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Predicate

public interface Predicate

java.util.function.Predicate<T>

Represents a predicate (boolean-valued function) of one argument.

This is a functional interface whose functional method is test(java.lang.Object).

Summary

Public methods
`default Predicate<T>`	`and(Predicate<? super T> other)` Returns a composed predicate that represents a short-circuiting logical AND of this predicate and another.
`static <T> Predicate<T>`	`isEqual(Object targetRef)` Returns a predicate that tests if two arguments are equal according to `Objects#equals(Object, Object)`.
`default Predicate<T>`	`negate()` Returns a predicate that represents the logical negation of this predicate.
`default Predicate<T>`	`or(Predicate<? super T> other)` Returns a composed predicate that represents a short-circuiting logical OR of this predicate and another.
`abstract boolean`	`test(T t)` Evaluates this predicate on the given argument.

Public methods

and

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`	`Predicate`: a predicate that will be logically-ANDed with this predicate

Returns
`Predicate<T>`	a composed predicate that represents the short-circuiting logical AND of this predicate and the `other` predicate

Throws
`NullPointerException`	if other is null

isEqual

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`	`Object`: the object reference with which to compare for equality, which may be `null`

Returns
`Predicate<T>`	a predicate that tests if two arguments are equal according to `Objects#equals(Object, Object)`

negate

public Predicate<T> negate ()

Returns a predicate that represents the logical negation of this predicate.

Returns
`Predicate<T>`	a predicate that represents the logical negation of this predicate

or

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`	`Predicate`: a predicate that will be logically-ORed with this predicate

Returns
`Predicate<T>`	a composed predicate that represents the short-circuiting logical OR of this predicate and the `other` predicate

Throws
`NullPointerException`	if other is null

test

public abstract boolean test (T t)

Evaluates this predicate on the given argument.

Parameters
`t`	`T`: the input argument

Returns
`boolean`	`true` if the input argument matches the predicate, otherwise `false`