Chapter 67. Installing and configuring Java Runtime Environment
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Installing and configuring Java Runtime Environment

Chapter 67. Installing and configuring Java Runtime Environment

Revision History
	10.05.2017
First edition
	07.09.2017
Java configuration has been moved to a separate section.

Some devices of Tillypad XL use the Java Runtime Environment. To make sure they operate correctly, you need to install and configure Java.

In addition to installing the correct Java client version, you also need to configure additional Windows variables settings.

Updating or installing Java

Tillypad XL devices require 32-bit Java, version 7 or higher.

To check your current version of Java, go to Start Menu > Java > About Java.

Figure 67.1. Verifying Java version

If you need to update Java, make sure you delete the old versions first. After that, install the most recent version of Java.

Configuring JRE_HOME

JRE_HOME is a system variable. After updating Java, you need to change its value.

Open System properties: Control panel – System – Advanced system parameters.

Figure 67.2. System properties

On the bottom right, press Environment Variables... This will open the Environment Variables window.

Figure 67.3. Environment variables

If JRE_HOME is not in the list, you must create it. To do so, press New... in User variables. If JRE_HOME has already been created, select it and press Edit...

In the Variable name field, enter JRE_HOME. In the Variable value field, specify the path to the installed Java distribution kit.

Figure 67.4. Creating a user variable

Press OK to save your changes.

Configuring the Path variable

In the Environment Variables window, select the Path variable under System variables and press Edit...

Figure 67.5. Changing the Path variable

Press New and enter %JRE_HOME%\bin.

Figure 67.6. Adding the value of the Path variable

Press OK to save your changes.