- Trending Categories
Data Structure
Networking
RDBMS
Operating System
Java
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to get all children of a process using Process API in Java 9?
Process handling classes and related API have been introduced in Java 9. We can use the ProcessHandle interface and related methods to get pid and information about other related processes. We need to get all children of a process, then use java.lang.ProcessHandle.children() method. This method returns a stream, typically a process that has no children.
In the below example, we can get the first process and retrieve its children's process information.
Example
import java.util.stream.Stream; import java.util.Optional; public class ChilderenProcessTest { public static void main(String args[]) throws InterruptedException { System.out.println("---------------------------"); System.out.println("Children Processes:"); Optional<ProcessHandle> processHandle = ProcessHandle.allProcesses().findFirst(); processHandle.ifPresent(proc -> proc.children().forEach(child -> System.out.println("PID: [ " + child.pid() + " ], Cmd: [ " + child.info().command() + " ]"))); } }
Output
--------------------------- Children Processes: PID: [ 0 ], Cmd: [ Optional.empty ] PID: [ 4 ], Cmd: [ Optional.empty ] PID: [ 424 ], Cmd: [ Optional.empty ] PID: [ 504 ], Cmd: [ Optional.empty ] PID: [ 560 ], Cmd: [ Optional.empty ] PID: [ 444 ], Cmd: [ Optional.empty ] PID: [ 1236 ], Cmd: [ Optional.empty ] PID: [ 1288 ], Cmd: [ Optional.empty ] PID: [ 1408 ], Cmd: [ Optional.empty ] PID: [ 1424 ], Cmd: [ Optional.empty ] PID: [ 1452 ], Cmd: [ Optional.empty ] PID: [ 1468 ], Cmd: [ Optional.empty ] PID: [ 5412 ], Cmd: [ Optional[C:\WINDOWS\System32\taskhostex.exe] ] PID: [ 3760 ], Cmd: [ Optional[C:\Program Files\Synaptics\SynTP\SynTPEnh.exe] ] PID: [ 5216 ], Cmd: [ Optional[C:\WINDOWS\explorer.exe] ] PID: [ 2460 ], Cmd: [ Optional[C:\Program Files (x86)\Dell Wireless\Bluetooth Suite\BtvStack.exe] ] PID: [ 6064 ], Cmd: [ Optional[C:\Program Files\Realtek\Audio\HDA\RtkNGUI64.exe] ] PID: [ 7172 ], Cmd: [ Optional[C:\Program Files (x86)\Google\Chrome\Application\chrome.exe] ] PID: [ 860 ], Cmd: [ Optional[C:\Program Files (x86)\Google\Chrome\Application\chrome.exe] ] PID: [ 9000 ], Cmd: [ Optional.empty ] PID: [ 4180 ], Cmd: [ Optional[C:\WINDOWS\System32\cmd.exe] ] PID: [ 3748 ], Cmd: [ Optional[C:\WINDOWS\System32\conhost.exe] ] PID: [ 3376 ], Cmd: [ Optional.empty ] PID: [ 2548 ], Cmd: [ Optional.empty ] PID: [ 1820 ], Cmd: [ Optional[C:\Program Files\Java\jdk-9.0.4\bin\java.exe] ]
- Related Articles
- How to get the parent process of the Process API in Java 9?
- How to terminate/destroy a process using Process API in Java 9?
- How to traverse a process tree of Process API in Java 9?
- How to get a snapshot of information about Process API in Java 9?
- How to retrieve all processes data of Process API in Java 9?
- What are the improvements in Process API in Java 9?
- How to create a process using ProcessBuilder in Java 9?
- What are the new methods added to Process API in Java 9?
- How to get all the Get-Process properties using PowerShell?
- What are the core library changes in Process API in Java 9?
- How can we get an ID of the running process in Java 9?
- How to print all attributes in StackFrame API in Java 9?
- How to get all the processes on the local computer with Get-Process command using PowerShell?
- How to get the Process performance counter using PowerShell?
- How to get the specific process(es) information using PowerShell?

Advertisements