Java Installation

Java is available for installation from a number of sources. Below are just a few of the sources:

• OpenWebStart (includes Java).
• Linux Distribution’s Package Repository.
• Oracle Java.

Notes:

• Your choice of where to get Java is generally based upon the license, features, and ease of installation. A more complete list is sources along with license information is available at Wikipedia. Linux users should generally install Java from their distribution’s standard package repository.
• NASA-managed computers: The Java installed on NASA-managed computers does not include WebStart/IcedTea. You can install OpenWebStart (even if you already have Java from the “Software Center” or “Self-Service Portal”) and select the option to install for a single user. That option will not overwrite a “system” installation of Java and will not require administrative privileges to install.

Java Version

Java versions after 8 have significant functional and licensing incompatibilities with version 8. SKTEditor runs on 8 and later versions. The following provides some guidance when choosing a version:

• Java 11 or higher:
  • If you choose to use Java 11, you must install the IcedTea component. Installing IcedTea on Linux is no more difficult than installing Java. At this time, only OpenWebStart includes IcedTea so it is recommended for Windows and macOS users.
• Java 8:
  • Users of Oracle’s traditional Java (available from www.java.com and www.oracle.com/java) should choose version 8 because it includes the WebStart component. Newer versions do not include WebStart.
  • Users of AdoptOpenJDK’s Java should choose version 8 because the msi installer includes an option to install the IcedTea component.

Java Installation Instructions

Instructions for installing Java on the following platforms

• Microsoft Windows
• Apple macOS
• Linux

are provide below.

Microsoft Windows Java Installation Procedures

Download and install OpenWebStart.

Apple macOS Java Installation Procedures

Download and install OpenWebStart.

Linux Java Installation Procedures

Choose from one of the following Java installation procedures based upon the Linux distribution you are using.

• Debian/Ubuntu based distributions
  1. $ sudo apt install openjdk-11-jdk
  2. $ sudo apt install icedtea-netx
• RPM based distributions
  1. $ sudo dnf install java-11-openjdk-devel
  2. $ sudo dnf install icedtea-web

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