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:org.nuclos.client.main.MainController.java

/**
 * - cleanup old preferences./* ww  w . j a va2s.c  o  m*/
 * - not in use any more.
 */
private void removeUnusedPreferences() {
    getExplorerController().prefs.remove(ExplorerController.PREFS_NODE_EXPLORERVIEWS_XML);
    getExplorerController().prefs.remove(ExplorerController.PREFS_NODE_EXPLORERVIEWS);
    getExplorerController().prefs.remove(ExplorerController.PREFS_NODE_EXPLORER_EXPANDEDPATHS);

    Preferences settingsPrefs = ClientPreferences.getUserPreferences().node("explorer").node("settings");
    settingsPrefs.remove("showExplorerMode");
    settingsPrefs.remove("showTaskpanelMode");
    settingsPrefs.remove("transparencyLevel");

    try {
        ClientPreferences.getUserPreferences().node(PREFS_NODE_MDIWINDOWS).removeNode();
    } catch (BackingStoreException e) {
        LOG.error("removeUnusedPreferences failed: " + e, e);
    }
}

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From source file:org.pentaho.reporting.ui.datasources.jdbc.connection.JdbcConnectionDefinitionManager.java

private static void put(final Preferences node, final String key, final String value) {
    if (value == null) {
        node.remove(key);
    } else {/*  w  w  w.  j a va 2 s .  co  m*/
        node.put(key, value);
    }

}

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From source file:org.rhq.server.control.command.AbstractInstall.java

private void clearAgentPreferences() throws Exception {
    log.info("Removing any existing agent preferences from default preference node");

    // remove everything EXCEPT the security token
    Preferences agentPrefs = getAgentPreferences();
    String[] prefKeys = null;//from   w  w  w  . j  a v  a2  s  . com

    try {
        prefKeys = agentPrefs.keys();
    } catch (Exception e) {
        log.warn("Failed to get agent preferences - cannot clear them: " + e);
    }

    if (prefKeys != null && prefKeys.length > 0) {
        for (String prefKey : prefKeys) {
            if (!prefKey.equals(PREF_RHQ_AGENT_SECURITY_TOKEN)) {
                agentPrefs.remove(prefKey);
            }
        }
        agentPrefs.flush();
        Preferences.userRoot().sync();
    }
}

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