# Deleting a JRE definition

You can delete Java runtime environment definitions that are available for executing Java programs in the workbench.

1. Open the Java > Installed JREs preference page.
2. Select the definition you want to delete and click Remove.
3. Check the box for the definition that you want to use as the default JRE for the workbench.

Java development tools (JDT)

Working with JREs
Adding a new JRE definition
Choosing a default JRE
Choosing a JRE for launching a project

Installed JREs preference page