Studio will not start with wrong Java version

Summary

This article describes an issue when Studio will not start when an unsupported version of Java is detected.

Applies to

• DataStax Studio 6.0
• DataStax Studio 6.7

Symptoms

When the Studio is started, the start script fails and an error message like this is returned:

Studio 6.0 requires Java 8. Java 10 is not supported.

Cause

Studio checks the JAVA_HOME environment variable at startup. JAVA_HOME and java -version might point to different java installations.

Note that even when the java -version command shows a supported Java version, it is possible that the JAVA_HOME environment variable is not set to the correct Java installation directory.

Solution

To ensure that Studio starts with the correct version of Java, make sure the JAVA_HOME environment variable points to the installation directory with the supported version of Java.

1. Ensure a supported Java version is installed:

$ java -version

See JREs and JDKs supported by DataStax products.

2. To set JAVA_HOME, run the following commands:

$ setenv JAVA_HOME <java-install-dir>
$ setenv PATH $JAVA_HOME/bin:$PATH
$ export PATH=$JAVA_HOME/bin:$PATH