Every class that extends jme3.app.SimpleApplication has properties that can be configured by customizing a com.jme3.system.AppSettings object. Configure the settings before you call app.start() on the application object. If you change display settings during runtime, call app.restart() to make them take effect.

Note: Other runtime settings are covered in SimpleApplication.

public static void main(String[] args) {
  AppSettings settings = new AppSettings(true);
  settings.setResolution(640,480);
  ... // other properties see below
 
  MyGame app = new MyGame(); // or Main or whatever you called your SimpleApplication
  app.setSettings(settings);
  app.start();
}

Set the boolean in the AppSettings contructor to true if you want to keep the default settings for everything that you do not specify. Set this parameter to false if you want to change some of the settings, but otherwise want the application to load user settings from previous launches.

An AppSettings object also supports the following methods:

• Use settings.save("unique_key") to save your settings via standard java.io serialization.
• Use settings.load("unique_key") to load your settings.
• Use settings2.copyFrom(settings) to copy a settings object.

Usage:

Provide the unique name of your jME3 application as the String argument. For example com.foo.MyCoolGame3.

    try { settings.save("com.foo.MyCoolGame3"); } 
    catch (BackingStoreException ex) { /** could not save settings */ }

• On Windows, the preferences are saved under the following registry key:
  HKEY_CURRENT_USER\Software\JavaSoft\Prefs\com\foo\MyCoolGame3
• On Linux, the preferences are saved in an XML file under:
  $HOME/.java/.userPrefs/com/foo/MyCoolGame3
• On Mac OS X, the preferences are saved as XML file under:
  $HOME/Library/Preferences/com.foo.MyCoolGame3.plist