For those who are stuck with a Java project that y...

# announcements

[michaelzinn]

For those who are stuck with a Java project that you can’t port to Kotlin I backported Kotlin’s null safety to Java (meta-annotation, ?. and ?:) : https://github.com/cosee/null4j

[diego-gomez-olvera]

There is a javax.annotation.ParametersAreNonnullByDefault

[diego-gomez-olvera]

the difference is that @NotNullByDefault support fields and return types?

[michaelzinn]

NotNullByDefault applies to everything, yes.

[michaelzinn]

We experimented with having it not apply to local variables etc. but it was too confusing. Having it apply to everything means it’s just like Kotlin: “String” really means String and “@Nullable String” means String or null, no matter where “String” is actually written.