Execute DOS Commands from a Java Program

Rather unintuitively, you can’t run DOS commands directly by specifying Runtime.getRuntime().exec(dosCommand) in Java. Instead, to execute a DOS command (such as DIR, or RD) from a Java program, you need to prepend the command to run the Windows command shell cmd /c to the command you want to execute. The /c switch terminates the command shell after the desired command completes. Here’s the syntax:

Runtime.getRuntime().exec("cmd /c " + dosCommand);

And here’s an example that gets the file list in a directory and its subdirectories using the DIR command with the /s (include subdirectories) switch:

import java.io.IOException;import java.io.InputStream;public class ExecuteDOSCommand {   public static void main(String[] args) {      final String dosCommand = "cmd /c dir /s";      final String location = "C:\WINDOWS";      try {         final Process process = Runtime.getRuntime().exec(            dosCommand + " " + location);         final InputStream in = process.getInputStream();         int ch;         while((ch = in.read()) != -1) {            System.out.print((char)ch);         }      } catch (IOException e) {         e.printStackTrace();      }   }}
Share the Post:
Share on facebook
Share on twitter
Share on linkedin

Overview

The Latest

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS