- All Implemented Interfaces:
Serializable,Comparable<Predicates>,Constable
Utilities around predicates.
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Nested Class Summary
Nested classes/interfaces inherited from class java.lang.Enum
Enum.EnumDesc<E extends Enum<E>> -
Method Summary
Modifier and TypeMethodDescriptionstatic <T> Predicate<T> always()static <T> Predicate<T> never()static BooleanSupplieronce()static PredicatesReturns the enum constant of this class with the specified name.static Predicates[]values()Returns an array containing the constants of this enum class, in the order they are declared.
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Method Details
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values
Returns an array containing the constants of this enum class, in the order they are declared.- Returns:
- an array containing the constants of this enum class, in the order they are declared
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valueOf
Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)- Parameters:
name- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException- if this enum class has no constant with the specified nameNullPointerException- if the argument is null
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always
- Type Parameters:
T- type of the predicate- Returns:
- a predicate that accepts all input values
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never
- Type Parameters:
T- type of the predicate- Returns:
- a predicate that rejects all input values
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once
- Returns:
- a
BooleanSupplierwhich suppliestruethe first time it is called, andfalsesubsequently.
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