Package org.apache.commons.io.function
Interface IOPredicate<T>
- Type Parameters:
T- the type of the input to the predicate
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
Like
Predicate but throws IOException.- Since:
- 2.12.0
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Method Summary
Modifier and TypeMethodDescriptionstatic <T> IOPredicate<T> Always false.static <T> IOPredicate<T> Always true.default IOPredicate<T> and(IOPredicate<? super T> other) Creates a composed predicate that represents a short-circuiting logical AND of this predicate and another.static <T> IOPredicate<T> Creates a predicate that tests if two arguments are equal usingObjects.equals(Object, Object).default IOPredicate<T> negate()Creates a predicate that represents the logical negation of this predicate.default IOPredicate<T> or(IOPredicate<? super T> other) Creates a composed predicate that represents a short-circuiting logical OR of this predicate and another.booleanEvaluates this predicate on the given argument.
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Method Details
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alwaysFalse
Always false.- Type Parameters:
T- the type of the input to the predicate- Returns:
- a constant predicate that tests always false.
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alwaysTrue
Always true.- Type Parameters:
T- the type of the input to the predicate- Returns:
- a constant predicate that tests always true.
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isEqual
Creates a predicate that tests if two arguments are equal usingObjects.equals(Object, Object).- Type Parameters:
T- the type of arguments to the predicate- Parameters:
target- the object to compare for equality, may benull- Returns:
- a predicate that tests if two arguments are equal using
Objects.equals(Object, Object)
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and
Creates a composed predicate that represents a short-circuiting logical AND of this predicate and another. When evaluating the composed predicate, if this predicate isfalse, then theotherpredicate 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
otherpredicate 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
otherpredicate - Throws:
NullPointerException- if other is null
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asPredicate
- Returns:
- an UncheckedIOException Predicate.
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negate
Creates a predicate that represents the logical negation of this predicate.- Returns:
- a predicate that represents the logical negation of this predicate
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or
Creates a composed predicate that represents a short-circuiting logical OR of this predicate and another. When evaluating the composed predicate, if this predicate istrue, then theotherpredicate 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
otherpredicate 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
otherpredicate - Throws:
NullPointerException- if other is null
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test
Evaluates this predicate on the given argument.- Parameters:
t- the input argument- Returns:
trueif the input argument matches the predicate, otherwisefalse- Throws:
IOException- if an I/O error occurs.
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