Re:The Reason Java Is Still Popular
by piva00 on Thursday September 22, 2022 @06:51PM
(#32945643)
My issue with checked exceptions in Java is that it becomes another branch of control flow. It increases cognitive load to keep in mind that exceptional cases are basically running a `GOTO` that you have to keep track of.
I think they can have its place but operating well with lambdas would be a must... If Java supported a multi-value return, like Go and Python do, and control flow was based on `var a, err = obj.exec()` or some other syntax that could work nicely with Streams and the functional features of Java I wouldn't have an issue with checked exceptions. A multi-return for errors with checked exceptions would even allow the compiler to narrow down all the possible `err` types you could get, automatically generate a Java 17 `switch()` to parse through all the possible cases of checked exceptions. It could help a lot with error handling.
I think they can have its place but operating well with lambdas would be a must... If Java supported a multi-value return, like Go and Python do, and control flow was based on `var a, err = obj.exec()` or some other syntax that could work nicely with Streams and the functional features of Java I wouldn't have an issue with checked exceptions. A multi-return for errors with checked exceptions would even allow the compiler to narrow down all the possible `err` types you could get, automatically generate a Java 17 `switch()` to parse through all the possible cases of checked exceptions. It could help a lot with error handling.