Java Download and Installation Instructions

You may want to print these instructions before proceeding, so that you can refer to them while downloading and installing Java. Or, just keep this document in your browser. You should read each step completely before performing the action that it describes.

This document shows downloading and installing Java 8 update 221 on Windows 10 in Summer 2010. You should download and install the latest version of Java. The current latest (as of Summerd 2019) is Javal 8 update 221.

Remember that you must install Java, Python, and Eclipse all as 64-bit applications (for some, like Eclipse, you have no choice).


The following instructions were composed for installing Sun Java 1.8.0_221 (aka Java SE Development Kit (JDK) 8, Update 221). The version you download may be newer. The current is Version 8 Update 144.

The Java download requires about 76 MB of disk space; keep it on your machine, in case you need to reinstall Java (not likely necessary). When installed, Java requires about an additional 160 MB of disk space.

Remember that you must install Java, Python, and Eclipse all as 64-bit applications (for some, like Eclipse, you have no choice).


  1. Click Java Downloads.

    The following page will appear in your browser.

  2. Click the third red-bulleted item Windows Offline. This is the 64-bit edition.

    The following pop-up window titled Opening jre-8u221-windows-x64.exe will appear.

    Click the Save File button.

    This file should start downloading into your standard download folder. This file is about 76 Mb, so it may take a few minutes to download.

    The file should appear as

    Terminate the window browsing the Java download page.

  3. Move this file to a more permanent location, so that you can install Java (and reinstall it later, if necessary).

  4. Start the Installing instructions directly below.


  1. Double click the jre-8u221-windows-x64.exe file that you just downloaded and moved.

    When run, a User Account Control pop-up window may appear on your screen. I could not capture its image, but it asks, Do you want to allow this app to make changes to your device.

  2. Click the Yes button.

    A Java Setup - Welcome pop-up window will appear.

  3. Click the Install > button.

    A Java Setup - Progress pop-up window will appear, with the following message at the top of the window: Status: Installing Java

    A green progress bar will appear, showing the progress as it installs Java, and will finally disappear (on my machine this took about 30 seconds).

    A Java Setup - Complete pop-up window will appear.

  4. Click Close

    If you know how to bring up system prompt/cmd window, you can test the Java installation by typing java -version to the prompt and pressing the Enter key. It should show the following.

    After seeing this message (look for java version "1.8.0_221" on the line after the command) or an error message, type exit in the cmd.exe window and press the Enter key.

The installed files are typically stored (in Windows) in the folder C:\Program Files\Java. Inside this folder should be the folder: jre1.8.0_221, which itself should contain a bin and lib folder, and some miscellaneous .txt and a Welcome.html file.

You can now follow the instructions to download and install Python and then the Eclipse IDE.