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PreferencesDemo.java
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30 lines (29 loc) · 974 Bytes
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//: io/PreferencesDemo.java
package io; /* Added by Eclipse.py */
import java.util.prefs.*;
import static net.mindview.util.Print.*;
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())
print(key + ": "+ prefs.get(key, null));
// You must always provide a default value:
print("How many companions does Dorothy have? " +
prefs.getInt("Companions", 0));
}
} /* Output: (Sample)
Location: Oz
Footwear: Ruby Slippers
Companions: 4
Are there witches?: true
UsageCount: 53
How many companions does Dorothy have? 4
*///:~