How to get VSCode to recognize Kotlin classes in Java code?

Question

I'm using VSCode. I have the following in myApi.kt:

package com.mycompany.myproject.myapi

data class MyClass(
    val accountNumber: String,
    val state: String,
    val country: String
)

...and I have the following in myApp.java:

import com.mycompany.myproject.myapi.*;

MyClass myObject = new MyClass();

Compilation and execution are all fine. The only problem is VSCode gives me a red squigly underline beneath references to MyClass in the java file. Hovering over it, it says:

MyClass cannot be resolved to a type Java(16777218)

I have the Kotlin plug-in installed in VSCode.

How can I get VSCode to recognize this Kotlin class in my java file?

This is not yet supported based on this open issue github.com/redhat-developer/vscode-java/issues/531 — Barry Wang
– Barry Wang, Commented Apr 12, 2019 at 5:38
Thanks, @Barry. Go ahead and put that as an answer and I'll accept it. — Jonathan M
– Jonathan M, Commented Apr 12, 2019 at 14:11
This is super frustrating, vscode works well while debuging using a kotlin configuration but errors on importing kotlin classes on java are a big down. In the other way debugging kotlin and java with intelliJ does not work when using WSL2. — OscarSanhueza
– OscarSanhueza, Commented Jan 6, 2022 at 9:10

Barry Wang · Accepted Answer · 2019-04-15 01:15:31Z

4

This is not yet supported based on this open issue

answered Apr 15, 2019 at 1:15

Barry Wang

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1 Comment

Malcolm Crum Over a year ago

There is a PR open to resolve the issue, so help may be on the way: github.com/fwcd/kotlin-language-server/pull/334

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