Behavior of var with Lambda Parameters in Java 11+ for OCP

[RoseBL]

Hi all,
While studying for the OCP exam, I noticed that Java 11 allows using var for lambda parameters. I’m a bit confused about how this affects type inference and annotations.

For example, in a lambda like (var x, var y) -> x + y, does using var change anything in terms of type safety or compilation compared to explicitly specifying the parameter types? Also, are there any scenarios in the exam where using var in lambdas could lead to a tricky question?
Retro Bowl
Would really appreciate a clear explanation or example.

Thanks!

[admin]

No, there is no issue with type safety here because the compiler will deduce the type of var from the functional method parameters of the interface that the lambda is trying to implement.

In case of (var x, var y) -> x + y, you have to see the context where this expression is used. That will determine the functional method and thus the types of both the vars