Apache Wicket 11.x

New in Wicket 11

• A new baseline

  Wicket 11 requires Java 21 and runs on Jakarta Servlet 6.1, and its Spring integration moves to Spring 7. Applications on Wicket 10 already use jakarta.servlet, so the step up is your JDK and your container.

  Java

  21

  Jakarta Servlet

  6.1

  Spring

  7

• More secure by default

  Encryption is rebuilt on one authenticated scheme: encrypted URLs and stored pages cannot be altered unnoticed, the scheme generates its own key, and encrypted URLs stay cacheable. Components that write model values into markup escape them consistently, and the content security policy now covers script-src-attr and style-src-attr.

• Leaner components

  A component keeps its model, behaviors and metadata in one compact state object instead of a packed array. In the benchmarks, reading that state is 30 to 45% faster, and a component tree with Ajax behaviors serializes about 40% smaller, so sessions and the page store carry less.

• Ajax without jQuery

  A second, plain JavaScript implementation of the Ajax engine with the same client-side API. Opt in, and your pages, including autocomplete, palette and the upload progress bar, no longer download jQuery. jQuery remains the default and now supports jQuery 4.

  WicketApplication.java

  @Override
  protected void init() {
      super.init();
      getJavaScriptLibrarySettings().setWicketAjaxReference(
          WicketAjaxResourceReference.get());
  }
  

• Ajax veils

  PageVeilBehavior and LocalVeilBehavior in wicket-extensions cover a page or a single component while an Ajax request runs, so a second click on a slow button does not send the request twice. A spinner appears only when the request takes longer than 300 ms.

  BasePage.java

  public abstract class BasePage extends WebPage {
      public BasePage() {
          add(new PageVeilBehavior());
      }
  }
  

Documentation

• Docs

  The documentation for Wicket 11: tutorials, how-to guides, reference and explanation.

  The reference guide as one document

• Migration guide

  The migration guide from Wicket 10 is not published on the wiki yet. Upgrading from Wicket 10 in the release announcement lists the steps, and New in Wicket 11 lists the changes.

• API documentation

  Javadoc for Wicket 11: every class, method and setting.

Blog posts about Wicket 11

• 26 Oct 2026 · Major release

  Apache Wicket 11.0.0 released

  The Apache Wicket PMC is proud to announce Apache Wicket 11.0.0! Wicket 11 opens the quarterly release schedule. It moves to a current Java and Jakarta baseline, tightens...

All posts on the blog