# Deleting a JRE definition

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

1. Select Window > Preferences from the main menu bar.
2. From the left pane, expand the Java category and select Installed JREs.
3. Select the definition you want to delete and click Remove.
4. 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
Editing a JRE definition

Installed JREs preference page