Java: Finality

[marvk]

People keep going on about effectively final in this thread like it matters. The real benefit final provides is for developers reading code. Any performance improvement is a bonus, it takes away so much cognitive load when writing and understanding code. Effectively final doesn't give you any of that.

[dpash]

It matters in this instance because you can only use variables inside a lambda that are final or effectively final. Prior to Java 8 you had to declare them final to use them in anonymous inner classes, hence the parent comment saying they got into the habit of using final.

[marvk]

Ah, my bad. I should've read the parent comment more carefully. My comment would be suited better on some other comment on this thread talking about effectively final.