Functional Interface prior to Java 8 | okay java | Java 8 Functional Interface | Function interface

Functional Interface prior to Java 8 | okay java | Java 8 Functional Interface | Function interface

Can you name any functional interface which was there prior to java 8?

1) Runnable Interface
public abstract void run();

2) Comparator Interface
public int compareTo(T o);

3) ActionListener
public void actionPerformed(ActionEvent e);

What is new in Java 8 Functional Interfaces?
1) @FunctionalInterface annotation
2) Predicate - test()
3) Function - apply()
4) Consumer - accept()
5) Supplier - get()
6) BiPredicate - test()
7) BiFunction - apply()
8) BiConsumer - accept()

1. Java 8 new features

2. Java 8 functional interface part

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4. Functional Interface prior to Java 8

5. Default methods in interface

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7. Java 8 lambda expression

8. Lambda expression variable scope interview questions

9. Java 8 predicate functional Interface

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25. Create Immutable class in Java

26. what is a web service ?

27. Watch Introduction to Microservices 08.50 Minutes

28. Watch Microservices components in one video 20 Minutes

29. Watch How to Install Spring Tool Suite on Windows Machine

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29. Watch How to Install Spring Tool Suite on Windows Machine

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[tippabatinisantoshkumar]

It has not only one compare to but also equals so it is not FI