Example usage for java.util.prefs Preferences parent

Introduction

In this page you can find the example usage for java.util.prefs Preferences parent.

Prototype

public abstract Preferences parent();

Source Link

Document

Returns the parent of this preference node, or null if this is the root.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {

    Preferences prefs = Preferences.userNodeForPackage(java.lang.String.class);

    Preferences node = prefs.parent(); // /java
    node = node.parent(); // null

    String[] names = null;/* w ww .  j a  va2s . c om*/
    names = prefs.childrenNames();

    for (int i = 0; i < names.length; i++) {
        node = prefs.node(names[i]);
    }
}

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From source file:PreferenceExample.java

public static void main(String args[]) throws Exception {
    Preferences prefsRoot = Preferences.userRoot();
    Preferences myPrefs = prefsRoot.node("PreferenceExample");

    myPrefs.put("A", "a");
    myPrefs.put("B", "b");
    myPrefs.put("C", "c");

    System.out.println("Node's name: " + myPrefs.name());
    System.out.println("Node's parent: " + myPrefs.parent());
    System.out.println("NODE: " + myPrefs);

}

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From source file:Main.java

public static void main(String[] argv) throws Exception {

    // Get the system root
    Preferences prefs = Preferences.systemRoot();

    // Get the user root
    prefs = Preferences.userRoot();

    // The name of a root is ""
    String name = prefs.name();//  w ww. j a  v  a 2s .co  m

    // The parent of a root is null
    Preferences parent = prefs.parent();

    // The absolute path of a root is "/"
    String path = prefs.absolutePath();
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    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();
    prefs.putFloat("myFloat", 12.3F); // float
    prefs.putDouble("myDouble", 12.3); // double
    byte[] bytes = new byte[10];
    prefs.putByteArray("myByteArray", bytes); // byte[]

    prefs.exportSubtree(new FileOutputStream("output.xml"));
}

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From source file:PreferenceExample.java

public void printInformation(Preferences p) throws BackingStoreException {
    System.out.println("Node's absolute path: " + p.absolutePath());

    System.out.print("Node's children: ");
    for (String s : p.childrenNames()) {
        System.out.print(s + " ");
    }// ww  w  . j av  a2s  .  c o  m
    System.out.println("");

    System.out.print("Node's keys: ");
    for (String s : p.keys()) {
        System.out.print(s + " ");
    }
    System.out.println("");

    System.out.println("Node's name: " + p.name());
    System.out.println("Node's parent: " + p.parent());
    System.out.println("NODE: " + p);
    System.out.println("userNodeForPackage: " + Preferences.userNodeForPackage(PreferenceExample.class));

    System.out.println("All information in node");
    for (String s : p.keys()) {
        System.out.println("  " + s + " = " + p.get(s, ""));
    }
}

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