JEP 458, Launch Multi-File Source-Code Programs, has been Closed/Delivered for JDK 22. This JEP proposes to enhance the Java Launcher to execute an application supplied as one or more files of Java so ...

In order to do so, name your file as ‘SampleFile.java’ (You can name the file anything, as long as the file extension is .java and from File type, select ‘All Files’.