Examples of java.util.Hashtable.keySet()

java.util.Hashtable.keySet()
Returns a {@link Set} view of the keys contained in this map.The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations. @since 1.2

    {
        super.setContextProperties(file);


        // Map the torque.xxx elements from the env to the contextProperties
        Hashtable env = super.getProject().getProperties();
        for (Iterator i = env.keySet().iterator(); i.hasNext();)
        {
            String key = (String) i.next();
            if (key.startsWith("torque."))
            {
                String newKey = key.substring("torque.".length());

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                if (newFiles.size() > 0) {
                    try {
                        // associate the resources with their respective
                        // RepositoryProvider
                        Hashtable table = getProviderMapping((IResource[]) newFiles.toArray(new IResource[newFiles.size()]));
                        Set keySet = table.keySet();
                        Iterator iterator = keySet.iterator();
                        while (iterator.hasNext()) {
                            IProgressMonitor subMonitor = Policy.subMonitorFor(monitor, 100);
                            SVNTeamProvider provider = (SVNTeamProvider) iterator.next();
                            List list = (List) table.get(provider);

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     */
    public static ObjectName createObjectName(Map nameMap) {
        Hashtable objectNameMap = new Hashtable(nameMap);
        String type = (String) nameMap.get(J2EE_TYPE);
        if ("JVM".equals(type)) {
            objectNameMap.keySet().retainAll(Arrays.asList(new String[] {J2EE_TYPE, J2EE_NAME, "J2EEServer"}));
            objectNameMap.put("J2EEServer", DEFAULT_SERVER_NAME);
        } else if ("J2EEDomain".equals(type)) {
            //special case J2EEDomain gbean
            objectNameMap.clear();
            objectNameMap.put(J2EE_TYPE, "J2EEDomain");

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     */
    public static ObjectName createObjectName(Map nameMap) {
        Hashtable objectNameMap = new Hashtable(nameMap);
        String type = (String) nameMap.get(J2EE_TYPE);
        if ("JVM".equals(type)) {
            objectNameMap.keySet().retainAll(Arrays.asList(new String[] {J2EE_TYPE, J2EE_NAME, "J2EEServer"}));
            objectNameMap.put("J2EEServer", DEFAULT_SERVER_NAME);
        } else if ("J2EEDomain".equals(type)) {
            //special case J2EEDomain gbean
            objectNameMap.clear();
            objectNameMap.put(J2EE_TYPE, "J2EEDomain");

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    }
    
    public QName[] getOperationQNames() {
        Hashtable operations = (Hashtable)getOption("Operations");
        if (operations == null) return null;
        Object[] keys = operations.keySet().toArray();
        QName[] qnames = new QName[keys.length];
        System.arraycopy(keys,0,qnames,0,keys.length);
        return qnames;
    }

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    }


    private void checkDefaultEntityHash(final DTD dtd) {
        Hashtable entityHash = dtd.entityHash;
        assertEquals(3, entityHash.size());
        Set keys = entityHash.keySet();
        Iterator iter = keys.iterator();
        int count = 0;
        while (iter.hasNext()) {
            String name = (String)iter.next();
            Entity entity = (Entity)entityHash.get(name);

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     */
    public static ObjectName createObjectName(Map nameMap) {
        Hashtable objectNameMap = new Hashtable(nameMap);
        String type = (String) nameMap.get(J2EE_TYPE);
        if ("JVM".equals(type)) {
            objectNameMap.keySet().retainAll(Arrays.asList(new String[] {J2EE_TYPE, J2EE_NAME, "J2EEServer"}));
            objectNameMap.put("J2EEServer", DEFAULT_SERVER_NAME);
        } else if ("J2EEDomain".equals(type)) {
            //special case J2EEDomain gbean
            objectNameMap.clear();
            objectNameMap.put(J2EE_TYPE, "J2EEDomain");

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                PropertySet set = (PropertySet) e.nextElement();
                names.addAll(set.getProperties().keySet());
            }
            if (negate) {
                //make a copy...
                HashSet complement = new HashSet(props.keySet());
                complement.removeAll(names);
                names = complement;
            }
            if (!getDynamic()) {
                cachedNames = names;

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                    byDir.put(parent, v);
                }
                v.addElement(thisLink);
            }
            // write a Properties file in each directory:
            for (Iterator dirs = byDir.keySet().iterator(); dirs.hasNext();) {
                File dir = (File) dirs.next();
                Vector linksInDir = (Vector) byDir.get(dir);
                Properties linksToStore = new Properties();


                // fill up a Properties object with link and resource names:

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            {
                fromClause.add(tableName);
            }
        }


        Iterator it = aliases.keySet().iterator();
        while(it.hasNext())
        {
          String key = (String)it.next();
          selectClause.add((String)aliases.get(key) + " AS " + key);
        }

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