Updated By - September 6, 2019

Portable Java - run Java from a USB flash drive

Portable Java on USB: An official portable version of Java has been released by PortableApps. By installing Java on a USB flash drive, you can run your .JAR files directly from the portable Java installation, eliminating the need to rely on a local JRE install.

About Portable Java

Portable Java is a convenient solution for developers and users who need to run Java applications on multiple systems without installing Java on each one. This portable version allows you to carry Java with you on a USB drive, enabling you to execute .JAR files and other Java programs on any compatible computer. Ideal for those who frequently work across different machines or environments, it ensures that you have a consistent Java runtime environment wherever you go.

Key Features Include:

  • No Installation Required: Run Java directly from a USB drive without needing to install it on the host computer.
  • Cross-Platform Compatibility: Compatible with Windows 11, 10, 8, and 7, making it versatile for different user environments.
  • Easy Setup: Simple process to install and configure Portable Java on your USB drive using the Portable Apps Platform.
  • Java Portable Launcher: A dedicated launcher to easily execute .JAR files from your portable installation.
  • Lightweight: The stand alone Java setup is compact, occupying only 108 MB before adding any Java programs.

Portable Java Setup Guide

This tutorial will walk you through installing the Portable Apps Platform, Java Portable, and Java Portable Launcher on a USB flash drive. Once complete, you'll be able to run Java applications from your USB stick via a standalone launcher.

Steps to Install Portable Java:

    1. Download Portable Apps and install it on your USB drive (Platform Only).
    2. Download Java Portable and proceed to install it on your USB flash drive.
    3. Download Java Portable Launcher and install it onto the USB drive as well.
    4. Run StartPortableApps.exe from the USB flash drive.
    5. Click Java Portable Launcher and select a .JAR file to open.
      Portable Java
    6. Select File > Load (filename) to run the desired file.

Now you can enjoy running your Java .JAR files portably from a USB flash drive!

Portable Java Specifications

  • Extracted Size: 108 MB (before adding any Java programs)
  • Software Author's Website: Authors Page
  • Developer: John Haller
  • License: Open Source
  • Operating System: Windows 11, 10, 8, 7
  • Price: Free (USD $0)
  • Application Category: Utilities, Portable Programming
  • Editor's Rating: 4 Stars