What is Functional interface in Java 8 Video

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Functional Interfaces are useful for passing functionality as parameter to Lambda expressions. In this video you will learn what are functional interface, what are the requirements to create functional interfaces, some examples, link to source code and some practical examples.
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Excellent explenation more use full keep

chirukamisetti
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Grt.. Small video but without any nasty activities or example u just taught well..Thanks ..

sumantarath
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You might want to add a video about neater newer ways to do sorts in Java 8, probably added to this playlist. You do mention the Comparator interface, but don't show anything here.

jvsnyc
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good explanation, but I don't think lambda expression are short hand notation for anonymous classes

JonDoe-fqsl
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Thanks a ton. Awesome explanation...Thumbs up.

nagendrasai
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thanks a lot... understood pretty well sir

ExplorerSumitRoy
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third one is bit confusing you said it could be funtional interface but in the presentation it is like not considered

SHKPriya
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Is it really an any interface extends object class only class can extends another class not interface??

hituraj