Class NotNullPredicate<T>
- java.lang.Object
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- org.apache.commons.collections4.functors.NotNullPredicate<T>
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- All Implemented Interfaces:
java.io.Serializable
,Predicate<T>
public final class NotNullPredicate<T> extends java.lang.Object implements Predicate<T>, java.io.Serializable
Predicate implementation that returns true if the input is not null.- Since:
- 3.0
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description static Predicate
INSTANCE
Singleton predicate instanceprivate static long
serialVersionUID
Serial version UID
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Constructor Summary
Constructors Modifier Constructor Description private
NotNullPredicate()
Restricted constructor.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
evaluate(T object)
Evaluates the predicate returning true if the object does not equal null.static <T> Predicate<T>
notNullPredicate()
Factory returning the singleton instance.private java.lang.Object
readResolve()
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Field Detail
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serialVersionUID
private static final long serialVersionUID
Serial version UID- See Also:
- Constant Field Values
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INSTANCE
public static final Predicate INSTANCE
Singleton predicate instance
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Method Detail
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notNullPredicate
public static <T> Predicate<T> notNullPredicate()
Factory returning the singleton instance.- Type Parameters:
T
- the type that the predicate queries- Returns:
- the singleton instance
- Since:
- 3.1
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evaluate
public boolean evaluate(T object)
Evaluates the predicate returning true if the object does not equal null.
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readResolve
private java.lang.Object readResolve()
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