How Can I Get the Process ID (PID) of a Java Application?

How to Obtain a Java Process's ID (PID)?

Identifying a Java process's PID is a common task in Java programming. While platform-dependent solutions exist, finding a more generic approach can be beneficial.

Unfortunately, there is no truly platform-independent method guaranteed to function across all JVM implementations. However, ManagementFactory.getRuntimeMXBean().getName() has proven to be a reliable solution. It typically includes the PID and has the following format:

"12345@hostname"

where "12345" represents the PID.

It's important to note that the documentation provides no guarantees regarding the value returned. However, it has been consistently effective on Linux and Windows systems.

In Java 9 and later, the more modern process API offers a straightforward solution:

long pid = ProcessHandle.current().pid();

Utilizing this approach, you can easily retrieve the PID of your Java process in a manner that is both reliable and platform-agnostic.

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