Exporting the Preferences in a Subtree of Preference Nodes - Java Native OS

Java examples for Native OS:Preference

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Description

Exporting the Preferences in a Subtree of Preference Nodes

Demo Code

import java.io.FileOutputStream;
import java.io.IOException;
import java.util.prefs.BackingStoreException;
import java.util.prefs.Preferences;

public class Main {
  public void m() throws Exception {
    // Retrieve the user preference node for the package java.lang
    Preferences prefs = Preferences.userNodeForPackage(String.class);

    // Save some values
    prefs.put("myString", "a string"); // String
    prefs.putBoolean("myBoolean", true); // boolean
    prefs.putInt("myInt", 123); // int
    prefs.putLong("myLong", 123L); // long

    // Save some values in the parent node
    prefs = prefs.parent();/*from w  w  w.  j  a  va2 s.  c  o  m*/
    prefs.putFloat("myFloat", 12.3F); // float
    prefs.putDouble("myDouble", 12.3); // double
    byte[] bytes = new byte[10];
    prefs.putByteArray("myByteArray", bytes); // byte[]

    try {
      prefs.exportSubtree(new FileOutputStream("output.xml"));
    } catch (IOException e) {
    } catch (BackingStoreException e) {
    }
  }
}

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