i think i’ve found a bug in kotlin converter, Java Code

Collection<Long> values = fetchList();
            Long[] valuesAsArray = new Long[values.size()];
            values.toArray(valuesAsArray);

Kotlin conversion

val values = fetchList()
            val valuesAsArray = arrayOfNulls<Long>(values.size)
            values.toTypedArray()

and all elements in valuesAsArray will be null

I think there's no bug. Typed arrays of non primitives have null values by default in java

the bug is that valuesAsArray in java had the data

Java Code and Kotlin Code are different, aren’t they?

yes and that’s the problem. i have converted using intellij java to kotlin converter

In third line

kotlin code should be

val values = fetchList()
val valuesAsArray = values.toTypedArray()

:youtrack:

@karelpeeters https://youtrack.jetbrains.com/issue/KT-20534 🙂