4.8.3. Debugging Web Widgets

You can use GWT Super Dev Mode to debug web widgets on the browser side.

  1. Setup the debugWidgetSet task in build.gradle.

  2. Deploy the application and start Tomcat.

  3. Run the debugWidgetSet task:

    gradlew debugWidgetSet

    The running GWT Code Server will recompile your widgetset on modification.

  4. Open http://localhost:8080/app?debug&superdevmode in Chrome web browser and wait for the widgetset is built for the first time.

  5. Open the debug console in Chrome:

    debugWidgetSet chrome console

  6. After changing the Java code in the web-toolkit module, refresh the web page in the browser. The widgetset will be rebuilt incrementally in approximately 8-10 seconds.