How to get the process id (PID) of the running Java process

Java 8 and before: 

public static void main(String[] args) throws Exception{ Process proc = Runtime.getRuntime().exec(new String[]{ "/bin/sh", "-c", "echo $PPID" }); if (proc.waitFor() == 0) { InputStream in = proc.getInputStream(); int available = in.available(); byte[] outputBytes = new byte[available];; String pid = new String(outputBytes); System.out.println("Your pid is " + pid); }}
…from Java 9 on:

System.out.println("Your pid is " + Process.getCurrentPid());


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