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How many Functional Interfaces are available in Java containing 'Filter' in their name?

 
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Hi,

How many functional interfaces with Filter in their name can you find in the
Java API? Which ones add value over Predicate<T>?

I do not see any Functional Interfaces with name conataining 'Filter' in it under "java.util.function "

I have just copied the exact question from book "Java 8 for the really impatient". Could you please help to clarify this?

Thanks,
Raghu
 
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One of them is java.io.FileFilter. Nobody said a functional interface can only be found in java.util.function package.

I checked sources of JDK 1.8.0_60 and there are 3 interfaces with Filter in their name marked with @FunctionalInterface annotation.
 
Raghavendra Desoju
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Thank you !!
 
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