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Showing content from https://docs.oracle.com/en/java/javase/20/docs/api/java.base/java/util/function/Predicate.html below:

Predicate (Java SE 20 & JDK 20)

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.

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

Since:

1.8

• Method Summary

  Returns a composed predicate that represents a short-circuiting logical AND of this predicate and another.

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

  Returns a predicate that is the negation of the supplied predicate.

  Returns a composed predicate that represents a short-circuiting logical OR of this predicate and another.

  boolean

  Evaluates this predicate on the given argument.

• Method Details
  • test

    Evaluates this predicate on the given argument.

    Parameters:

    t - the input argument

    Returns:

    true if the input argument matches the predicate, otherwise false

  • and

    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

  • negate

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

    Returns:

    a predicate that represents the logical negation of this predicate

  • or

    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

  • isEqual

    Type Parameters:

    T - the type of arguments to the predicate

    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)

  • not

    Returns a predicate that is the negation of the supplied predicate. This is accomplished by returning result of the calling target.negate().

    Type Parameters:

    T - the type of arguments to the specified predicate

    Parameters:

    target - predicate to negate

    Returns:

    a predicate that negates the results of the supplied predicate

    Throws:

    NullPointerException - if target is null

    Since:

    11

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