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

    Hashtable m=jlh.scene.getNamedObjects();
    if(m!=null && m.size()>0){
      // TODO map these objects into corresponding ActiveNode
      // or do it for all the branchgroup sub nodes
      System.out.println("Scene contains :");
      Iterator it=m.keySet().iterator();
      while(it.hasNext()){
        Object v=it.next();
        System.out.println(v+"<=>"+m.get(v));
      }
    }

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         System.out.println(key.getClientTags());
      }
      {
         MsgKeyData md = new MsgKeyData(new Global(args));
         Hashtable map = md.toJXPath();
         Iterator it = map.keySet().iterator();
         while (it.hasNext()) {
            String key = (String)it.next();
            System.out.println(key + " -> '" + map.get(key) + "'");
         }
      }

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    if (sections == null)
    {
      return null;
    } // if (sections == null)


    TreeSet sectionSet = new TreeSet(sections.keySet());
    return new Vector(sectionSet);
  } // getSections(String chapter)


  /**
   * Returns a map of all keys and their values for the given chapter and

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                }
                if (allText == null) {
                    Hashtable buddyStatuses = BuddyList.getInstance()
                            .getBuddyStatuses();
                    if (buddyStatuses != null) {
                        Iterator iterator = buddyStatuses.keySet().iterator();
                        while (iterator.hasNext()) {
                            String user2 = (String) iterator.next();
                            BuddyStatus buddy2 = (BuddyStatus) buddyStatuses.get(user2);
                            if (buddy2.equals(buddy) == false
                                     && buddy2.getConversation() != null

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      try
      {
         // Obtain the environment naming context.
         Context initCtx = new InitialContext();
         Hashtable env = initCtx.getEnvironment();
         Iterator keys = env.keySet().iterator();
         log.info("InitialContext.env:");
         while( keys.hasNext() )
         {
            Object key = keys.next();
            log.info("Key: "+key+", value: "+env.get(key));

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        Hashtable newDirectoryMap = makeDirectoryMap(newDirectories);


        assertEquals(oldDirectories.size(), oldDirectoryMap.keySet().size());
        ArrayList oldDirectoryTypes = new ArrayList(oldDirectoryMap.keySet());
        Collections.sort(oldDirectoryTypes);
        ArrayList newDirectoryTypes = new ArrayList(newDirectoryMap.keySet());
        Collections.sort(newDirectoryTypes);
        assertEquals(oldDirectoryTypes, newDirectoryTypes);


        for (int i = 0; i < oldDirectoryTypes.size(); i++)
        {

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            Hashtable oldFieldMap = makeFieldMap(oldItems);
            Hashtable newFieldMap = makeFieldMap(newItems);


            Set missingInNew = new HashSet(oldFieldMap.keySet());
            missingInNew.removeAll(newFieldMap.keySet());


            Set missingInOld = new HashSet(newFieldMap.keySet());
            missingInOld.removeAll(oldFieldMap.keySet());


            //            dump("missingInNew", missingInNew);

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            Hashtable newFieldMap = makeFieldMap(newItems);


            Set missingInNew = new HashSet(oldFieldMap.keySet());
            missingInNew.removeAll(newFieldMap.keySet());


            Set missingInOld = new HashSet(newFieldMap.keySet());
            missingInOld.removeAll(oldFieldMap.keySet());


            //            dump("missingInNew", missingInNew);
            //            dump("missingInOld", missingInOld);
            //            dump("newFieldMap.keySet()", newFieldMap.keySet());

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            //            assertEquals(oldFieldMap.keySet(), newFieldMap.keySet());
            //            assertEquals(oldFieldMap.keySet(), newFieldMap.keySet());


            ArrayList oldFieldTags = new ArrayList(oldFieldMap.keySet());
            Collections.sort(oldFieldTags);
            ArrayList newFieldTags = new ArrayList(newFieldMap.keySet());
            Collections.sort(newFieldTags);
            assertEquals(oldFieldTags, newFieldTags);


            for (int j = 0; j < oldFieldTags.size(); j++)
            {

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        Map expectedFieldValues = new Hashtable();
        expectedFieldValues.put(new Integer(EXIF_TAG_MAKE.tag), "Canon");
        expectedFieldValues.put(new Integer(EXIF_TAG_MODEL.tag), "Canon PowerShot SD750");
        expectedFieldValues.put(new Integer(EXIF_TAG_MODIFY_DATE.tag), "2007:12:25 13:34:39");
        Iterator expectedTags = expectedFieldValues.keySet().iterator();
        while (expectedTags.hasNext()) {
            Integer tag = (Integer) expectedTags.next();
            Object expectedValue = expectedFieldValues.get(tag);


            assertTrue(fieldMap.containsKey(tag));

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