Issues in running virtual threads program on intellij with java19

Question

I am trying to run below simple program with virtual threads on my intellij with java19 version selected.

Code

public class VTSimple {
    public static void main(String[] args) {
        Runnable runnable = () -> System.out.println("Inside Runnable");
        Thread.startVirtualThread(runnable);
    }
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.java19</groupId>
    <artifactId>java19-explore</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>19</maven.compiler.source>
        <maven.compiler.target>19</maven.compiler.target>
    </properties>

</project>

Project Settings

SDK - 19

Language Level - X Experimental Features as last version shown was 17(preview) in Language Level dropdown Also Tried SDK Default Option as well.

Error

When I ran the program it gave me below error

java: invalid source release 18 with --enable-preview
  (preview language features are only supported for release 19)

Few Trials

I tried to add --enable-preview in VM Options of this small program and as well as compiler settings in preferences but it didn't work.

Edit 1

Setup Details :

Mac OS Air M1 : 12.1 Monterey

Intellij Version : IntelliJ IDEA 2021.3.3 (Community Edition) Build #IC-213.7172.25, built on March 15, 2022

Java Version : openjdk 19.0.1 2022-10-18

OpenJDK Runtime Environment (build 19.0.1+10-21)

OpenJDK 64-Bit Server VM (build 19.0.1+10-21, mixed mode, sharing)

Edit 2

Updated Intellij to version IntelliJ IDEA 2022.2.3 (Community Edition) and java version 19 was showing in language level. But still there is an error

java: ofVirtual() is a preview API and is disabled by default.
  (use --enable-preview to enable preview APIs)

Note : I have already passed --enable-preview in VM Options of program and Compiler settings in preferences.

Answer 1

You need to use IntelliJ IDEA 2022.2 or newer for Java 19 support.

Answer 2

--enable-preview should be in VM options, NOT program arguments

You still need to have those settings in Java Compiler

And the project settings:

Also, you can run from the command line

java --enable-preview --source 19 Main.java

Sample code:

with the following results: