Systems Engineering Software

Installing Java manually


This page describes how to install Java manually. However, most bundled IDE releases include Java and do not require manual installation of Java.

The Systems Engineering tooling runs on Eclipse, which runs on Java. Our software generates Java code that must be compiled at runtime. For this reason, you need a Java Development Kit (JDK). A Java Runtime Environment (JRE) does not suffice! Currently, we only support Oracle JDK releases, version 8 update 31 (8u31) and higher.

The x64 (64-bit) version of Java can be used only on 64-bit operating systems. The x86 (32-bit) version of Java can be used on both 32-bit and 64-bit operating systems. If you are unsure whether you have a 32-bit or 64-bit operating system, it is thus safest to use the x86 (32-bit) version of Java. However, the x64 (64-bit) version of Java is preferred, as it can use more memory.

You can download a JDK from the Oracle Java downloads page.

The installation instructions differ per operating system. Below the instructions are given for Windows, Linux, and Mac OS X.

After you’ve installed the JDK, you can continue with the manual installation of Eclipse.

Installing a JDK on Windows

During installation, when asked what to install (Development Tools, Source Code, and/or Public JRE), you may set the Public JRE to This feature will not be available. To do this, click the icon left to that text and select This feature will not be available from the list. If you skip this step, then after the installation of the JDK, another installer will start to allow you to install a JRE as well, which you don’t need to use our software. You may also set Source Code to This feature will not be available, if you want, as the source code is not needed for our software.

For more information on installing JDK 8 on Windows, see Oracle’s JDK Installation for Microsoft Windows page.

Installing a JDK on Linux

For information on installing JDK 8 on Linux, see Oracle’s JDK Installation for Linux Platforms page.

Note that many Linux distributions allow installation of Java via their package managers. If you choose to install Java this way, please ensure you install a JDK, and not a JRE. Furthermore, we currently only support the Oracle JDK. That is, we have not tested any other JDKs, such as OpenJDK.

Whichever way you choose to install the JDK, make sure that java runs the java binary from the JDK. Especially if you have multiple versions of Java installed (possibly including both JREs and JDKs), this is an essential step. For further information, see

Installing a JDK on Mac OS X

Some versions of Mac OS X ship with a JDK pre-installed. However, this may not be a version that we support. Also, in more recent versions, they appear to be absent more frequently.

For more information on installing JDK 8 on Mac OS X, see Oracle’s JDK 8 Installation for OS X page.