Executing PowerShell Commands in Java Program

Question

I have a PowerShell Command which I need to execute using Java program. Can somebody guide me how to do this?

My command is Get-ItemProperty HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\* | Select-Object DisplayName, DisplayVersion, Publisher, InstallDate | Format-Table –AutoSize

possible duplicate of [Execute Powershell script using java](http://stackoverflow.com/questions/17467676/execute-powershell-script-using-java) — tnw, Apr 09 '15 at 17:57
Yes,I have gone through that question but can you give me a basic examle to set me going? I want to learn this. — question, Apr 09 '15 at 18:00
You need to exercise your google-fu and look up some examples. There's no reason you can't at least make an attempt at researching this. — tnw, Apr 09 '15 at 18:18

score 38 · Accepted Answer · edited Jun 23 '16 at 04:47

You should write a java program like this, here is a sample based on Nirman's Tech Blog, the basic idea is to execute the command calling the PowerShell process like this:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class PowerShellCommand {

 public static void main(String[] args) throws IOException {

  //String command = "powershell.exe  your command";
  //Getting the version
  String command = "powershell.exe  $PSVersionTable.PSVersion";
  // Executing the command
  Process powerShellProcess = Runtime.getRuntime().exec(command);
  // Getting the results
  powerShellProcess.getOutputStream().close();
  String line;
  System.out.println("Standard Output:");
  BufferedReader stdout = new BufferedReader(new InputStreamReader(
    powerShellProcess.getInputStream()));
  while ((line = stdout.readLine()) != null) {
   System.out.println(line);
  }
  stdout.close();
  System.out.println("Standard Error:");
  BufferedReader stderr = new BufferedReader(new InputStreamReader(
    powerShellProcess.getErrorStream()));
  while ((line = stderr.readLine()) != null) {
   System.out.println(line);
  }
  stderr.close();
  System.out.println("Done");

 }

}

In order to execute a powershell script

String command = "powershell.exe  \"C:\\Pathtofile\\script.ps\" ";

In case the path to the/a `.ps1` file contains a space, you can modify the `command` to: ```String command1 = "powershell.exe & 'C:/test folder with spaces/yourPowershellScript.ps1' ";``` to run the script from eclipse. — a.t., Jun 05 '19 at 15:14
Just incase someone would like to execute multiple commands at one time, use `-and` or `-or` between your commands to connect them. — Wayne Wei, Aug 23 '20 at 16:25

score 24 · Answer 2 · edited May 12 '23 at 15:07

24

No need of reinvent the wheel. Now you can just use jPowerShell. (Disclosure: I am the author of this tool.)

String command = "Get-ItemProperty " +
                "HKLM:\\Software\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\* " +
                "| Select-Object DisplayName, DisplayVersion, Publisher, InstallDate " +
                "| Format-Table –AutoSize";

System.out.println(PowerShell.executeSingleCommand(command).getCommandOutput());

edited May 12 '23 at 15:07

daveloyall

2,140
21
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answered Jan 16 '16 at 18:25

profesor_falken

559
6
10

1

I found your JAR to be not that robust, check my question + answer ---> http://stackoverflow.com/questions/42065666/executing-ads-related-powershell-command-through-java-does-not-work-giving-2-dif – Am_I_Helpful Feb 08 '17 at 09:41
1

Hello, for what I understand your problem was basically in the command string you sent to jPowershell and not in the JAR itself. – profesor_falken Feb 24 '17 at 22:55
Just came across this post and comment. I tried jPowerShell and got a couple simple examples working so just wanted to give my anecdotal endorsement of solution. Thanks @profesor_falken – MarkyMarksFunkyBunch Oct 21 '20 at 18:03
Is there anyway to use this library to execute commands which require admin privileges such as Disable-PnpDevice and Enable-PnpDevice? – Ron McLeod Aug 30 '23 at 21:57

score 5 · Answer 3 · answered Apr 09 '15 at 18:00

5

you can try to calle the powershell.exe with some commands like :

String[] commandList = {"powershell.exe", "-Command", "dir"};  

        ProcessBuilder pb = new ProcessBuilder(commandList);  

        Process p = pb.start();

answered Apr 09 '15 at 18:00

Katarak

79
2

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just a code sniped out of an old projekt you usualy dont need it – Katarak Apr 09 '15 at 18:10

score -3 · Answer 4 · edited Aug 19 '19 at 08:29

-3

You can use -ExecutionPolicy RemoteSigned in the command.

String cmd = "cmd /c powershell -ExecutionPolicy RemoteSigned -noprofile -noninteractive C:\Users\File.ps1

edited Aug 19 '19 at 08:29

Kumar Saurabh

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answered Aug 19 '19 at 07:39

Nitin Kumar

17

Executing PowerShell Commands in Java Program

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