2015-11-03 12:00:44 -08:00
|
|
|
|
// preferences/PreferencesDemo.java
|
2015-11-14 16:18:05 -08:00
|
|
|
|
// <20>2016 MindView LLC: see Copyright.txt
|
2015-06-15 17:47:35 -07:00
|
|
|
|
import java.util.prefs.*;
|
|
|
|
|
|
|
|
|
|
|
|
public class PreferencesDemo {
|
|
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
|
|
|
|
Preferences prefs = Preferences
|
|
|
|
|
|
.userNodeForPackage(PreferencesDemo.class);
|
|
|
|
|
|
prefs.put("Location", "Oz");
|
|
|
|
|
|
prefs.put("Footwear", "Ruby Slippers");
|
|
|
|
|
|
prefs.putInt("Companions", 4);
|
|
|
|
|
|
prefs.putBoolean("Are there witches?", true);
|
|
|
|
|
|
int usageCount = prefs.getInt("UsageCount", 0);
|
|
|
|
|
|
usageCount++;
|
|
|
|
|
|
prefs.putInt("UsageCount", usageCount);
|
|
|
|
|
|
for(String key : prefs.keys())
|
2015-11-03 12:00:44 -08:00
|
|
|
|
System.out.println(key + ": "+ prefs.get(key, null));
|
2015-06-15 17:47:35 -07:00
|
|
|
|
// You must always provide a default value:
|
2015-11-03 12:00:44 -08:00
|
|
|
|
System.out.println(
|
|
|
|
|
|
"How many companions does Dorothy have? " +
|
2015-06-15 17:47:35 -07:00
|
|
|
|
prefs.getInt("Companions", 0));
|
|
|
|
|
|
}
|
2015-09-07 11:44:36 -06:00
|
|
|
|
}
|
|
|
|
|
|
/* Output:
|
2015-06-15 17:47:35 -07:00
|
|
|
|
Location: Oz
|
|
|
|
|
|
Footwear: Ruby Slippers
|
|
|
|
|
|
Companions: 4
|
|
|
|
|
|
Are there witches?: true
|
|
|
|
|
|
UsageCount: 33
|
|
|
|
|
|
How many companions does Dorothy have? 4
|
2015-09-07 11:44:36 -06:00
|
|
|
|
*/
|
