在 Intellij Kotlin 应用程序中导入 java 类

Question

I am using IntelliJ for the first time to write a Kotlin program for windows.

I need to read a file so I used code from a sample site:

import java.io.File
import java.io.InputStream

fun main(args: Array<String>) {
  val inputStream: InputStream = File("bezkoder.txt").inputStream()
  val lineList = mutableListOf<String>()

  inputStream.bufferedReader().useLines { lines -> lines.forEach { lineList.add(it)} }
  lineList.forEach{println(">  " + it)}
}

The thing is that it doesn't recognise the import for the java classes.

I guess it is something in my setup but I have no idea where to look and haven't managed to find an answer.

This is my SDK setup screen

Answer 1

You can't use Java SDK classes in the Kotlin/Native projects, only in Kotlin/JVM.

Please also make sure you have a valid JDK configuration in the project. See this answer for more details.

If you want to read a file in Kotlin Native, see CsvParser.kt example.