====== Preferences ======
===== User Preferences =====
You need to store keys and values that are both strings, for a specific user, with platform independence.
* note that the class needs a package name because this is how the user preference system stores the name
==== Example ====
**PreferencesTest/PreferencesTest.java**
package PreferencesTest;
import java.util.prefs.Preferences;
public class PreferencesTest{
Preferences prefs;
public PreferencesTest(){
System.out.println("Creating new PreferencesTest object...");
prefs = Preferences.userNodeForPackage(PreferencesTest.class);
loadPrefs();
}
private void loadPrefs(){
System.out.println("Loading preferences...");
// retrieve some preferences previously stored, with defaults
// in case this is the first run
String text = prefs.get("textFontName", "lucida-bright");
String display = prefs.get("displayFontName", "lucida-blackletter");
System.out.println("text: " + text);
System.out.println("display: " + display);
// assume the user chose new preference values: store them back
prefs.put("textFontName", "times-roman");
prefs.put("displayFontName", "helvetica");
}
public static void main(String[] args){
PreferencesTest pt = new PreferencesTest();
}
}
After running the program, the following is created or updated if it already exists (Mac OSX Example):
**~/Library/Preferences/com.apple.java.util.prefs.plist**
/
PreferencesTest/
displayFontName
helvetica
textFontName
times-roman