Jakarta Expression Language

This feature enables support for the Jakarta Expression Language 4.0.

If you are updating your application from using the expressionLanguage-4.0 feature to using the expressionLanguage-5.0 feature, changes in API behavior might require you to update your application code. For more information, see Differences between Jakarta Expression Language 5.0 and 4.0.

Enabling this feature

To enable the Jakarta Expression Language 4.0 feature, add the following element declaration into your server.xml file, inside the featureManager element:


Standard API packages provided by this feature

  • jakarta.el

Supported Java versions

  • JavaSE-1.8

  • JavaSE-11.0

  • JavaSE-17.0

  • JavaSE-20.0

Developing a feature that depends on this feature

If you are developing a feature that depends on this feature, include the following item in the Subsystem-Content header in your feature manifest file.

io.openliberty.expressionLanguage-4.0; type="osgi.subsystem.feature"