How to print to the console in GWT

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. Do

Answer 1

I needed to do this in the context of a GWT application that was deployed to an Android device/emulator via PhoneGap (and gwt-phonegap). Neither System.out.println() nor GWT logging as above (with module declaration) showed up in Android's logcat, so I resorted to a simple JSNI wrapper to console.log:

  public void onModuleLoad()
  {
    Logger logger = Logger.getLogger("Test1.java");
    logger.log(Level.INFO, "ash: starting onModuleLoad (1)"); // not in logcat
    System.out.println( "ash: starting onModuleLoad (2)" ); // not in logcat
    consoleLog( "ash: starting onModuleLoad (3)" ); // This shows up
    ...
  }

  native void consoleLog( String message) /*-{
      console.log( "me:" + message );
  }-*/;