How can a Java program get its own process ID?

Question

How do I get the id of my Java process?

I know there are several platform-dependent hacks, but I would prefer a more generic solution.

Answer 1

For completeness there is a wrapper in Spring Boot for the

String jvmName = ManagementFactory.getRuntimeMXBean().getName();
return jvmName.split("@")[0];

solution. If an integer is required, then this can be summed up to the one-liner:

int pid = Integer.parseInt(ManagementFactory.getRuntimeMXBean().getName().split("@")[0]);

If someone uses Spring boot already, she/he might use org.springframework.boot.ApplicationPid

ApplicationPid pid = new ApplicationPid();
pid.toString();

The toString() method prints the pid or '???'.

Caveats using the ManagementFactory are discussed in other answers already.