Swing

  • Deprecated support for Applet/JApplet

The Applet API has been deprecated for removal with Java 9 and formally been removed with Java 26. Support for those containers will be removed after the 2027-12 release.

When opening a JApplet with the editor, the root element will be annotated with <Deprecated>

Deprecation indication in Designer editor

When trying to create a new JApplet with the editor, the entry in the "New" wizard and the dialog tile will be annotated with (Deprecated)

Deprecation indication in "New JApplet" wizard

See https://bugs.openjdk.org/browse/JDK-8359053

What’s new - v1.21.0