Java ProcessHandle get longest running process

import java.time.Duration;
import java.time.Instant;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.Arrays;

public class Main {
  public static void main(String[] args) {
    System.out.printf("%nLongest Running Process:%n"); 
    ProcessHandle//  w  ww .  j  a  va2  s .  co m
       .allProcesses()
       .max(Main::compareStartTime)
       .ifPresent(Main::printInfo);

  }

  public static int compareStartTime(ProcessHandle ph1, ProcessHandle ph2) { 
    return ph1.info() 
            .startInstant() 
            .orElse(Instant.now()) 
            .compareTo(ph2.info() 
                    .startInstant() 
                    .orElse(Instant.now())); 
} 

  public static void printInfo(ProcessHandle handle) {
    // Get the process ID
    long pid = handle.pid();

    // Is the process still running
    boolean isAlive = handle.isAlive();

    // Get other process info
    ProcessHandle.Info info = handle.info();
    String command = info.command().orElse("");

    String[] args = info.arguments().orElse(new String[] {});

    String commandLine = info.commandLine().orElse("");

    ZonedDateTime startTime = info.startInstant().orElse(Instant.now()).atZone(ZoneId.systemDefault());

    Duration duration = info.totalCpuDuration().orElse(Duration.ZERO);

    String owner = info.user().orElse("Unknown");
    long childrenCount = handle.children().count();

    // Print the process details
    System.out.printf("PID: %d%n", pid);
    System.out.printf("IsAlive: %b%n", isAlive);
    System.out.printf("Command: %s%n", command);
    System.out.printf("Arguments: %s%n", Arrays.toString(args));
    System.out.printf("CommandLine: %s%n", commandLine);
    System.out.printf("Start Time: %s%n", startTime);
    System.out.printf("CPU Time: %s%n", duration);
    System.out.printf("Owner: %s%n", owner);
    System.out.printf("Children Count: %d%n", childrenCount);
  }
}