In Java 9, how can we get the ID of a running process?

Java 9 has improved the Process API to obtain the PID## of a running process #, Get the child processes and/or descendant processes of a process, and also add a new help to list all running processes , get about Information about any process and classes for traversing the process tree. The information returned by these methods can be a snapshot of the processes running on the operating system.

In the following example, we can use the

pid() method of ProcessHandle to get the ID of the running process.

Example

public class ProcessHandleTest {
   public static void main(String args[]) {
      <strong>ProcessHandle </strong>processHandle = <strong>ProcessHandle.current()</strong>;
      System.out.println("PID of running Process: " + <strong>processHandle</strong>.<strong>pid()</strong>);
      System.out.println("Command: " + <strong>processHandle.info()</strong>.<strong>command()</strong>.orElse("N/A"));
      System.out.println("CPU Duration: " + <strong>processHandle.info()</strong>.<strong>totalCpuDuration().get().getSeconds()</strong> + " seconds");
   }
}

Output

<strong>PID of the running Process: 4248
Command: C:\Program Files\Java\jdk-9.0.4\bin\java.exe
CPU Duration: 0 seconds</strong>

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