September 16, 2024 - This is a quick introduction to application of Java ProcessHandle through a use case. ...

Returns the native process ID of the process. The native process ID is an identification number that the operating system assigns to the process. The operating system may reuse the process ID after a process terminates. Use equals or compareTo to compare ProcessHandles.

November 6, 2017 - public class ProcessHandleExample { public static void main(String[] args) throws Exception { ProcessBuilder processBuilder = new ProcessBuilder("notepad.exe"); Process process = processBuilder.start(); System.out.println("-- process handle --"); ProcessHandle processHandle = process.toHandle(); System.out.printf("PID: %s%n", processHandle.pid()); System.out.printf("isAlive: %s%n", processHandle.isAlive()); System.out.println("-- process info --"); ProcessHandle.Info info = processHandle.info(); info.command().ifPresent(str -> System.out.printf("Command: %s%n", str)); info.commandLine().ifPres

Returns the native process ID of the process. The native process ID is an identification number that the operating system assigns to the process. The operating system may reuse the process ID after a process terminates. Use equals or compareTo to compare ProcessHandles.

June 10, 2025 - @Test public void givenRunningProcesses_whenFilterOnProcessIdRange_thenGetSelectedProcessPid() { assertThat(((int) ProcessHandle.allProcesses() .filter(ph -> (ph.pid() > 10000 && ph.pid() < 50000)) .count()) > 0); } Java 9 introduced new options and methods for getting information about current and spawned processes.

/** * Obtain process ID via official API on Java 9. */ private static Long getProcessIdJava9() { try { Class c = Class.forName("java.lang.ProcessHandle"); Method _current = c.getDeclaredMethod("current"); Method _getPid = c.getDeclaredMethod("getPid"); Object _handle = _current.invoke(null); return (Long) _getPid.invoke(_handle); } catch (Exception ex) { System.err.println("ForcedGcMemoryProfiler: error obtaining PID"); ex.printStackTrace(); } return null; }

Returns the native process ID of the process. The native process ID is an identification number that the operating system assigns to the process. The operating system may reuse the process ID after a process terminates. Use equals or compareTo to compare ProcessHandles.

January 20, 2026 - The time between when a process terminates and the process id is reused for a new process is unpredictable. Race conditions can exist between checking the status of a process and acting upon it. When using ProcessHandles avoid assumptions about the liveness or identity of the underlying process.

July 15, 2025 - The time between when a process terminates and the process id is reused for a new process is unpredictable. Race conditions can exist between checking the status of a process and acting upon it. When using ProcessHandles avoid assumptions about the liveness or identity of the underlying process.

January 20, 2026 - Returns the native process ID of the process. The native process ID is an identification number that the operating system assigns to the process. The operating system may reuse the process ID after a process terminates. Use equals or compareTo to compare ProcessHandles.

January 20, 2026 - Returns the native process ID of the process. The native process ID is an identification number that the operating system assigns to the process. The operating system may reuse the process ID after a process terminates. Use equals or compareTo to compare ProcessHandles.

July 15, 2025 - The time between when a process terminates and the process id is reused for a new process is unpredictable. Race conditions can exist between checking the status of a process and acting upon it. When using ProcessHandles avoid assumptions about the liveness or identity of the underlying process.

Returns the native process ID of the process. The native process ID is an identification number that the operating system assigns to the process. The operating system may reuse the process ID after a process terminates. Use equals or compareTo to compare ProcessHandles.

March 13, 2020 - In the below example, we can print the pid of the current Process Handle by using the pid() method, and also checking the process is currently running by using the isAlive() method. import java.util.Optional; public class ProcessHandleTest { public static void main(String args[]) { long pid ...

October 20, 2025 - The ProcessHandle interface lets you identify and control native processes. The Process class is different from ProcessHandle because it lets you control processes started only by the methods ProcessBuilder.start and Runtime.exec; however, the Process class lets you access process input, output, ...

March 26, 2023 - Returns a hash code value for this ProcessHandle. ... public class Child { public static void main(String[] args) throws InterruptedException { TimeUnit.SECONDS.sleep(2); } } public class Main { public static void main(String[] args) throws IOException, InterruptedException { final var process = new ProcessBuilder("java", "Child").start(); final var current = ProcessHandle.current(); System.out.println("current : pid = " + current.pid()); System.out.println("current : hashCode = " + current.hashCode()); final var child = process.toHandle(); System.out.println("child : pid = " + child.pid()); System.out.println("child : hashCode = " + child.hashCode()); process.waitFor(); } } // Result // ↓ //> java Main //current : pid = 7260 //current : hashCode = 7260 //child : pid = 16924 //child : hashCode = 16924

Returns the native process ID of the process. The native process ID is an identification number that the operating system assigns to the process. The operating system may reuse the process ID after a process terminates. Use equals or compareTo to compare ProcessHandles.

January 6, 2022 - The time between when a process terminates and the process id is reused for a new process is unpredictable. Race conditions can exist between checking the status of a process and acting upon it. When using ProcessHandles avoid assumptions about the liveness or identity of the underlying process.

Using ProcessHandle.Info interface, we're getting the process information of the newly spawned process. package com.tutorialspoint; import java.time.ZoneId; import java.util.stream.Stream; import java.util.stream.Collectors; import java.io.IOException; public class Tester { public static void main(String[] args) throws IOException { ProcessBuilder pb = new ProcessBuilder("notepad.exe"); String np = "Not Present"; Process p = pb.start(); ProcessHandle.Info info = p.info(); System.out.printf("Process ID : %s%n", p.pid()); System.out.printf("Command name : %s%n", info.command().orElse(np)); Syste