Set the effective user ID of the Java process.

[DoWhile ForEach]

Hello.

Please explain someone why the Java API has not yet implemented a method
that allows you to set the effective user ID of the Java process.

To accomplish this simple task, you have to make some workarounds.
A striking example of such workarounds is jsvc tool from the Apache
commons-daemon project for Tomcat server:
https://github.com/apache/commons-daemon/blob/6702852984689bc6507690113949b478dba157ef/src/native/unix/native/jsvc-unix.c#L163