Handling Lambda Expressions with Interface java 8 [duplicate]

Question

Since I have an interface with two methods, how do I implement it with a concrete class? How do I write Lambda expressions for these two methods?

 interface LambdaExpression {
     void methodA();
     void methodB();
 }

@AndreyTyukin, please don't edit out proper grammar and/or punctuation. You've made this nearly unreadable. — ChiefTwoPencils
– ChiefTwoPencils, Commented Jan 21, 2018 at 17:13
@ChiefTwoPencils Sorry, there was a race condition between the two edits, for some reason "the system" decided to take my (less elaborate) edit. I didn't even attempt to fix the grammar or add any punctuation in this one. Could one roll it back to your version somehow, I agree that your version made much more sense. — Andrey Tyukin
– Andrey Tyukin, Commented Jan 21, 2018 at 17:17
No worries @AndreyTyukin. I think you can roll yours back if you want. — ChiefTwoPencils
– ChiefTwoPencils, Commented Jan 21, 2018 at 17:19
@ChiefTwoPencils ok, rolled back to your version, additionaly changed "Experession" to "Expression". [cleaning up the comment section] — Andrey Tyukin
– Andrey Tyukin, Commented Jan 21, 2018 at 17:30

Anurag Sharma · Accepted Answer · 2018-01-21 17:01:04Z

3

You can not. Lambda expressions are for functional interfaces ie interface with only one abstract method.

answered Jan 21, 2018 at 17:01

Anurag Sharma

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3 Comments

What are solutions for this case in Java 8

@WaseemSaeed: create two interfaces with one abstract method each.

Thanks @Anurag That is the only solution I guess. Thanks, Mate.!