Example usage for java.util.prefs Preferences remove

Introduction

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

Prototype

public abstract void remove(String key);

Source Link

Document

Removes the value associated with the specified key in this preference node, if any.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    // Get the user preference node for java.lang
    Preferences prefs = Preferences.userNodeForPackage(String.class);

    // Remove a preference in the node
    final String PREF_NAME = "name_of_preference";
    prefs.remove(PREF_NAME);

    // Remove all preferences in the node

    prefs.clear();//  w w  w . jav  a 2s  . co  m

}

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From source file:Main.java

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

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

    prefs.addPreferenceChangeListener(new PreferenceChangeListener() {
        public void preferenceChange(PreferenceChangeEvent evt) {

            Preferences node = evt.getNode();
            String key = evt.getKey();
            String newValue = evt.getNewValue();
        }/* ww w.  j  a  v a 2s  .  c  o  m*/
    });
    prefs.put("key", "a string");
    prefs.put("key", "a new string");
    prefs.remove("key");
}

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From source file:com.vaadin.integration.maven.wscdn.CvalChecker.java

static void deleteCache(String productName) {
    Preferences p = Preferences.userNodeForPackage(CvalInfo.class);
    p.remove(productName);
}

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From source file:au.org.ala.delta.intkey.ui.UIUtils.java

public static List<Pair<String, String>> getPreviouslyUsedFiles() {
    List<Pair<String, String>> retList = new ArrayList<Pair<String, String>>();

    Preferences prefs = Preferences.userNodeForPackage(Intkey.class);
    if (prefs != null) {
        try {// w  w w .j ava 2s .c  o m
            String mru = prefs.get(MRU_FILES_PREF_KEY, "");
            if (!StringUtils.isEmpty(mru)) {
                String[] mruFiles = mru.split(MRU_FILES_SEPARATOR);
                for (String mruFile : mruFiles) {
                    String[] mruFileItems = mruFile.split(MRU_ITEM_SEPARATOR);
                    retList.add(new Pair<String, String>(mruFileItems[0], mruFileItems[1]));
                }
            }
        } catch (Exception e) {
            // An error occurred. Clear the most recently used files list and return an empty list.

            prefs.remove(MRU_FILES_PREF_KEY);
            try {
                prefs.sync();
            } catch (BackingStoreException bse) {
                throw new RuntimeException(bse);
            }
            return Collections.EMPTY_LIST;
        }
    }

    return retList;
}

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From source file:de.ailis.oneinstance.OneInstance.java

/**
 * Unregisters this instance of the application. If this is the first
 * instance then the server is closed and the port is removed from
 * the preferences. If this is not the first instance then this method
 * does nothing.//from  ww w.j a v  a2s. c  om
 * 
 * This method should be called when the application exits. But it is
 * not a requirement. When you don't do this then the port number will
 * stay in the preferences so on next start of the application this port
 * number must be validated. So by calling this method on application exit
 * you just save the time for this port validation.
 * 
 * @param mainClass
 *            The main class of the application. Must not be null.
 *            This is used as the user node key for the preferences.
 */
public void unregister(Class<?> mainClass) {
    if (mainClass == null)
        throw new IllegalArgumentException("mainClass must be set");

    // Nothing to do when no server socket is present
    if (this.server == null)
        return;

    // Close the server socket
    this.server.stop();
    this.server = null;

    // Remove the port from the preferences
    Preferences prefs = Preferences.userNodeForPackage(mainClass);
    prefs.remove(PORT_KEY);
    try {
        prefs.flush();
    } catch (BackingStoreException e) {
        LOG.error(e.toString(), e);
    }
}

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From source file:net.sf.ginp.setup.SetupManagerImpl.java

/**
 * @see net.sf.ginp.setup.SetupManager#deleteConfiguration(java.net.URL)
 *//*from  ww  w. jav  a 2s .com*/
public final void deleteConfiguration(final URL configUrl) {
    Preferences preferences = Preferences.userNodeForPackage(SetupManagerImpl.class);
    preferences.remove(configUrl.toExternalForm());

    try {
        preferences.flush();
    } catch (BackingStoreException e) {
        log.error("No big deal if we couldn't delete", e);
    }
}

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From source file:org.apache.cayenne.pref.CayennePreferenceEditor.java

public void save() {
    cayenneProjectPreferences.getDetailObject(DBConnectionInfo.class).save();

    if (restartRequired) {
        restart();/*from  w  w  w.j a v  a  2  s  . co  m*/
    }

    // update boolean preferences
    Iterator it = changedBooleanPreferences.entrySet().iterator();
    while (it.hasNext()) {
        Map.Entry entry = (Map.Entry) it.next();
        Preferences pref = (Preferences) entry.getKey();
        Map<String, Boolean> map = (Map<String, Boolean>) entry.getValue();

        Iterator iterator = map.entrySet().iterator();
        while (iterator.hasNext()) {
            Map.Entry en = (Map.Entry) iterator.next();
            String key = (String) en.getKey();
            Boolean value = (Boolean) en.getValue();

            pref.putBoolean(key, value);
        }
    }

    // update string preferences
    Iterator iter = changedPreferences.entrySet().iterator();
    while (iter.hasNext()) {
        Map.Entry entry = (Map.Entry) iter.next();
        Preferences pref = (Preferences) entry.getKey();
        Map<String, String> map = (Map<String, String>) entry.getValue();

        Iterator iterator = map.entrySet().iterator();
        while (iterator.hasNext()) {
            Map.Entry en = (Map.Entry) iterator.next();
            String key = (String) en.getKey();
            String value = (String) en.getValue();

            pref.put(key, value);
        }
    }

    // remove string preferences
    Iterator iterator = removedPreferences.entrySet().iterator();
    while (iterator.hasNext()) {
        Map.Entry entry = (Map.Entry) iterator.next();
        Preferences pref = (Preferences) entry.getKey();
        Map<String, String> map = (Map<String, String>) entry.getValue();

        Iterator itRem = map.entrySet().iterator();
        while (itRem.hasNext()) {
            Map.Entry en = (Map.Entry) itRem.next();
            String key = (String) en.getKey();
            pref.remove(key);
        }
    }

    // remove preferences node
    Iterator<Preferences> iteratorNode = removedNode.iterator();
    while (iteratorNode.hasNext()) {
        Preferences pref = iteratorNode.next();
        try {
            pref.removeNode();
        } catch (BackingStoreException e) {
            logger.warn("Error removing preferences");
        }
    }

    Application.getInstance().initClassLoader();
}

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From source file:org.apache.syncope.ide.netbeans.view.ResourceExplorerTopComponent.java

private void rootRightClickAction(final MouseEvent evt) {
    JPopupMenu menu = new JPopupMenu();
    JMenuItem refreshItem = new JMenuItem("Refresh Templates");
    JMenuItem resetConnectionItem = new JMenuItem("Reset Connection");
    menu.add(refreshItem);//ww w. java 2  s . co  m
    menu.add(resetConnectionItem);

    refreshItem.addActionListener(new ActionListener() {

        @Override
        public void actionPerformed(final ActionEvent e) {
            // simulate close and open to refresh the tree
            componentClosed();
            componentOpened();
        }
    });

    resetConnectionItem.addActionListener(new ActionListener() {

        @Override
        public void actionPerformed(final ActionEvent evt) {
            ServerDetailsView serverDetails = getRefreshServerDetails();
            // set previous preferences
            Preferences prefs = NbPreferences.forModule(ResourceExplorerTopComponent.class);
            serverDetails.setDetails(prefs.get("scheme", "http"), prefs.get("host", "localhost"),
                    prefs.get("port", "8080"), prefs.get("username", StringUtils.EMPTY),
                    prefs.get("password", StringUtils.EMPTY));
            // reset connection preferences
            prefs.remove("scheme");
            prefs.remove("host");
            prefs.remove("port");
            prefs.remove("username");
            prefs.remove("password");
            serverDetails.setVisible(true);
        }
    });
    menu.show(evt.getComponent(), evt.getX(), evt.getY());
}

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From source file:org.broad.igv.DirectoryManager.java

private static File getIgvDirectoryOverride() {
    Preferences userPrefs = null;
    File override = null;//from ww w .  ja  v  a2s.c o  m
    try {
        // See if an override location has been specified.  This is stored with the Java Preferences API
        userPrefs = Preferences.userNodeForPackage(Globals.class);
        String userDir = userPrefs.get(IGV_DIR_USERPREF, null);
        if (userDir != null) {
            override = new File(userDir);
            if (!override.exists()) {
                override = null;
                userPrefs.remove(IGV_DIR_USERPREF);
            }
        }
    } catch (Exception e) {
        userPrefs.remove(IGV_DIR_USERPREF);
        override = null;
        System.err.println("Error creating user directory");
        e.printStackTrace();
    }
    return override;
}

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From source file:org.mbs3.juniuploader.gui.frmMain.java

public static void removeUploadLocation(String url)
// TODO: Make this preferences aware
{
    Preferences sites = prefs.node(prefs.absolutePath() + "/sites");
    for (int i = 0; i < uploadLocations.getSize(); i++) {
        UploadSite ptr = (UploadSite) uploadLocations.getElementAt(i);
        if (url.equals(ptr.getUrl())) {
            uploadLocations.removeElementAt(i);
            i--;//from w  w w.  j  a  v a  2  s. co  m
            sites.remove(url);
        }
    }
}

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