compact1, compact2, compact3

java.util.function

Interface Predicate<T>

Type Parameters:

T - the type of argument to test

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface Predicate<T>

Determines if the input object matches some criteria.

Since:

1.8

Method Summary

Modifier and Type	Method and Description
default Predicate<T>	and(Predicate<? super T> p) Returns a predicate which evaluates to true only if this predicate and the provided predicate both evaluate to true.
default Predicate<T>	negate() Returns a predicate which negates the result of this predicate.
default Predicate<T>	or(Predicate<? super T> p) Returns a predicate which evaluates to true if either this predicate or the provided predicate evaluates to true.
boolean	test(T t) Returns true if the input object matches some criteria.
default Predicate<T>	xor(Predicate<? super T> p) Returns a predicate that evaluates to true if both or neither of the component predicates evaluate to true.

Method Detail

test

boolean test(T t)

Returns true if the input object matches some criteria.

Parameters:

t - the input object

Returns:

true if the input object matches some criteria, otherwise false

and

default Predicate<T> and(Predicate<? super T> p)

Returns a predicate which evaluates to true only if this predicate and the provided predicate both evaluate to true. If this predicate returns false then the remaining predicate is not evaluated.

Parameters:

p - a predicate which will be logically-ANDed with this predicate.

Returns:

a new predicate which returns true only if both predicates return true.

negate

default Predicate<T> negate()

Returns a predicate which negates the result of this predicate.

Returns:

a new predicate who's result is always the opposite of this predicate.

or

default Predicate<T> or(Predicate<? super T> p)

Returns a predicate which evaluates to true if either this predicate or the provided predicate evaluates to true. If this predicate returns true then the remaining predicate is not evaluated.

Parameters:

p - a predicate which will be logically-ORed with this predicate.

Returns:

a new predicate which returns true if either predicate returns true.

xor

default Predicate<T> xor(Predicate<? super T> p)

Returns a predicate that evaluates to true if both or neither of the component predicates evaluate to true.

Parameters:

p - a predicate which will be logically-XORed with this predicte.

Returns:

a predicate that evaluates to true if both or neither of the component predicates evaluate to true.