Example usage for java.util.prefs Preferences removeNode

Introduction

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

Prototype

public abstract void removeNode() throws BackingStoreException;

Source Link

Document

Removes this preference node and all of its descendants, invalidating any preferences contained in the removed nodes.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    boolean exists = Preferences.userRoot().nodeExists("/yourValue"); // false

    Preferences.userRoot().node("/yourValue");

    exists = Preferences.userRoot().nodeExists("/yourValue"); // true

    Preferences prefs = Preferences.userRoot().node("/yourValue");
    prefs.removeNode();

    // exists = prefs.nodeExists("/yourValue");

    exists = prefs.nodeExists(""); // false
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    boolean exists = Preferences.userRoot().nodeExists("/yourValue");
    if (!exists) {
        Preferences prefs = Preferences.userRoot().node("/yourValue");
        prefs.removeNode();
        // prefs.removeNode();
    }// w  w  w  .  j  ava2s  . c o m
    Preferences prefs = Preferences.userRoot().node("/yourValue/child");
    exists = Preferences.userRoot().nodeExists("/yourValue");
    exists = Preferences.userRoot().nodeExists("/yourValue/child");

    Preferences.userRoot().node("/yourValue").removeNode();

    exists = Preferences.userRoot().nodeExists("/yourValue");
    exists = Preferences.userRoot().nodeExists("/yourValue/child");
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    boolean exists = Preferences.userRoot().nodeExists("/yourValue"); // false
    if (!exists) {
        Preferences prefs = Preferences.userRoot().node("/yourValue");
        prefs.removeNode();
        // prefs.removeNode();
    }/*from   w w  w .  ja v a 2 s  . co  m*/
    Preferences prefs = Preferences.userRoot().node("/yourValue/child");
    exists = Preferences.userRoot().nodeExists("/yourValue"); // true
    exists = Preferences.userRoot().nodeExists("/yourValue/child"); // true

    Preferences.userRoot().node("/yourValue").removeNode();

    exists = Preferences.userRoot().nodeExists("/yourValue"); // false
    exists = Preferences.userRoot().nodeExists("/yourValue/child"); // false
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    Preferences prefs = Preferences.userNodeForPackage(String.class);

    prefs.addNodeChangeListener(new NodeChangeListener() {
        public void childAdded(NodeChangeEvent evt) {
            Preferences parent = evt.getParent();
            Preferences child = evt.getChild();
        }/*w  w  w .  j  a v a2  s .c  o  m*/

        public void childRemoved(NodeChangeEvent evt) {
            Preferences parent = evt.getParent();
            Preferences child = evt.getChild();
        }
    });
    Preferences child = prefs.node("new node");
    child.removeNode();
    prefs.removeNode();
}

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From source file:de.tbuchloh.kiskis.KisKis.java

private static void resetPreferences() {
    try {//from w  w  w  .j  a v a2s . com
        final Preferences p = Preferences.userNodeForPackage(KisKis.class);
        p.removeNode();
        p.flush();

        if (PREF_FILE.exists()) {
            PREF_FILE.delete();
        }
        System.out.println("All preferences for package '" + KisKis.class.getPackage().getName()
                + "' were removed!\nYou can restart the application now!");
    } catch (final BackingStoreException e) {
        throw new Error(e);
    }
}

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From source file:de.tbuchloh.kiskis.gui.common.Application.java

/**
 * @param prefs//from w w  w. j a  v  a 2s  . c om
 *            is the location to store the program information
 * @param list
 *            is a list of Program objects
 */
public static void storePrograms(final Preferences prefs, final Collection list) {
    Preferences n = prefs.node(Settings.K_URL_ALLPROGS_NODE);
    try {
        n.removeNode();
    } catch (final BackingStoreException e) {
        throw new Error(e);
    }

    n = prefs.node(Settings.K_URL_ALLPROGS_NODE);
    int cnt = 0;
    for (final Iterator i = list.iterator(); i.hasNext();) {
        final Program p = (Program) i.next();
        final Preferences child = n.node(String.valueOf(cnt++));
        child.put(Settings.K_URL_PROG_PREFIX, p.getUrlRegex());
        child.put(Settings.K_URL_PROG_CMD, p.getCommand());
        LOG.debug("storing " + p); //$NON-NLS-1$
    }
    try {
        n.flush();
    } catch (final BackingStoreException e1) {
        throw new Error(e1);
    }
}

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From source file:de.tbuchloh.kiskis.util.Settings.java

public static Preferences initPreferences() {
    final Preferences n = Preferences.userNodeForPackage(Settings.class);
    final String newVersion = BuildProperties.getVersion();
    final String previousVersion = n.get(K_PROGRAM_VERSION, newVersion);

    if (LOG.isDebugEnabled()) {
        LOG.debug(String.format("oldVersion=%1$s, newVersion=%2$s", previousVersion, newVersion));
    }/*  w  w  w  .  jav a 2 s  .c  om*/

    if (!VersionTools.isCompatible(previousVersion, newVersion)) {
        LOG.debug("Versions not compatible! Recreating preference node for version=" + newVersion);
        try {
            n.removeNode();
        } catch (final BackingStoreException e) {
            LOG.error("Could not remove preference node", e);
        }

        final Preferences newN = Preferences.userNodeForPackage(Settings.class);
        newN.put(K_PROGRAM_VERSION, newVersion);
        return newN;
    }

    LOG.debug("Preferences seem to be compatible");
    return n;
}

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From source file:org.pdfsam.ui.DefaultStageService.java

public void clear() {
    Preferences prefs = Preferences.userRoot().node(STAGE_PATH);
    try {//from w ww.  ja  va 2  s.  c o  m
        prefs.removeNode();
        prefs.flush();
    } catch (BackingStoreException e) {
        LOG.error("Unable to clear stage status", e);
    }
}

---

From source file:org.pdfsam.news.DefaultNewsService.java

public void clear() {
    Preferences prefs = Preferences.userRoot().node(NEWS_PATH);
    try {//from  w  ww .j  a  v  a  2s . com
        prefs.removeNode();
        prefs.flush();
    } catch (BackingStoreException e) {
        LOG.error("Unable to clear latest news store", e);
    }
}

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From source file:org.pdfsam.ui.StatefullPreferencesStageService.java

void clearStageStatus() {
    Preferences prefs = Preferences.userRoot().node(STAGE_PATH);
    try {/*from   www  .  j  a v  a2  s. c o m*/
        prefs.removeNode();
        prefs.flush();
    } catch (BackingStoreException e) {
        LOG.error("Unable to clear stage status", e);
    }
}

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