Question

I am debugging a GWT application and I need to print some stuff to the console for testing purposes. System.out.println and GWT.log don’t work. Does anyone have any ideas?

Answer 1

Quoting the documentation:

Adding GWT logging is really quite simple, as simple as the following code example. However — understanding how logging works, and
how to correctly configure it is important, so please do take the time
to read the rest of this document.

http://code.google.com/webtoolkit/doc/latest/DevGuideLogging.html

The simplest way to enable logging is:

# In your .gwt.xml file
<inherits name="com.google.gwt.logging.Logging"/>

# In your .java file
Logger logger = java.util.logging.Logger.getLogger("NameOfYourLogger");
logger.log(Level.SEVERE, "this message should get logged");