Java 8 part 4 New Features Interview Questions And Answers Live Demo
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Consumer : It will consume Item. Consumers never return anything (never supply), they just consume.
Consumer Chaining :
We can combine / chain multiple consumers together with andThen .
There is only one ways to combine consumers:
c1.andThen(c2).apply(Input); - first c1 then c2
No compose() in consumer.
Multiple consumers can be chained together like :
c1.andThen(c2).andThen(c3).andThen(c4).apply(Inputs);
Supplier :
It will just supply required objects and will not take any input
Its always going to supply never consume / take any input.
EG : always supply me current date.
No chaining as no input is given to this. Only it gives u output.
Advantages:
Write once, use anywhere.
Code Reusability
BiCinsumer Bisupplier :
What if we need 2 arguments for operation?
Then we need Bi XYZ Functional Interfaces.
There is no input in supplier so no 1 or 2 Input arguments needed. Hence no BiSupplier.
Q) If we want to operate on 3 arguments then triPredicate?
There are no TriPredicate or TriFunction etc.
No QuadPredicate No QuadFunction.
Java 8 has inbuilt Functional interfaces that can take only 1 or 2 arguments no more.
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29 сен 2024
