How to read this line in Java stack trace?

Question

The stack is more complicated with lambda (note that the line number is lost due to obstruction). What does “access to $ lambda $ 12” really mean, and is there a way to find this in code without knowing the actual line number?

at com.group.RKGroup.com.my.MyClass access$lambda$12(com.group.RKGroup,int,com.my.PType) (RKGroup.java:43324)

The line number is useless because this stack trace was limited to Proguard.

Answer 1

It looks like lambdainside a method, but ...

javacdoes not generate such names (next to this, but not this). javac(even if it is never specified) generates them as

lambda$<method-name-where-used>$<incremental-number>

Or if you have something like this:

List<Integer> r = Stream.of(1).map(x -> x).collect(Collectors.toList());
lambda$new$<incremental-number> 

, (access), retro-lambda android. IIRC , , , access -, 12- . , IIRC, - .

Answer 2

, ​​ access. , 12- ... .

, - .

, , void [sic] . , .

, , , - -.

trace . , . , . - - .