This solution use the RuntimeMXBean. The name of the bean contains the pid (ex. 12345@localhost).
Warning : The returned name string can be any arbitrary string and a Java virtual machine implementation can choose to embed platform-specific useful information in the returned name string.
On the Sun JVM (Windows plateform), the PID is present.
public class SystemUtils {
private SystemUtils() {}
public static long getPID() {
String processName =
java.lang.management.ManagementFactory.getRuntimeMXBean().getName();
return Long.parseLong(processName.split("@")[0]);
}
public static void main(String[] args) {
String msg = "My PID is " + SystemUtils.getPID();
javax.swing.JOptionPane.showConfirmDialog((java.awt.Component)
null, msg, "SystemUtils", javax.swing.JOptionPane.DEFAULT_OPTION);
}
}
The result is
