For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

January 20, 2026 - For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

September 16, 2024 - Until the release of Java 9, I had a code that mainly uses Runtime.getRuntime().exec("ps aux...") to find and kill processes that hangs or exceed time limit. I had quite a bit of code, an ugly code, written to manage processes. I got really exited when I came across Java 9 ProcessHandle interface.

November 6, 2017 - In following example, we will 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.i...

For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

July 15, 2025 - For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

/** * 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; }

January 20, 2026 - For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

October 20, 2025 - Previous Next JavaScript must be enabled to correctly display this content · 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, and error streams. See Filtering Processes with Streams for an example of the ProcessHandle interface.

January 6, 2022 - For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

January 20, 2026 - For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

July 15, 2025 - For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...

March 13, 2020 - import java.util.Optional; public class ProcessHandleTest { public static void main(String args[]) { long pid = ProcessHandle.current().pid(); ProcessHandle currentProcess = ProcessHandle.current(); System.out.println("PID: " + currentProcess.pid()); Optional<ProcessHandle> processHandle = ProcessHandle.of(pid); boolean isAlive = processHandle.isPresent() && processHandle.get().isAlive(); System.out.println(isAlive); } }

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

June 10, 2025 - It’s also possible to get the process information of a newly spawned process. In this case, after we spawn the process and get an instance of the java.lang.Process, we invoke the toHandle() method on it to get an instance of java.lang.ProcessHandle.

For example, an embedded system might use a 16-bit value. Status information about a process is retrieved from the native system and may change asynchronously; processes may be created or terminate spontaneously. The time between when a process terminates and the process id is reused for a ...