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

                String key = (String)lists.next();
                str = str + "\n    " + "Referencees list name: " + key;
                Hashtable list = (Hashtable)_refLists.get(key);
                if(list!=null)
                {
                    Object[] keys = (Object[])list.keySet().toArray();
                    for(int i=0; i<keys.length; i++)
                        str = str + "\n      " + keys[i]; // + "   xpath=" + list.get(keys[i]);
                }
            }
        }

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                ValidCommand command = (ValidCommand)commands.next();
                    //System.out.println("command = " + command.getName());
                ht.put(command.getName(), command.getUsageText());
            }
            
            Vector v = new Vector(ht.keySet());
                //sort commands in alphabetical order
            Collections.sort(v);


            printHTMLCommands(v);
            printHTMLUsageText(v, ht);

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     * @return Formated String
     */
    public String toString() {
        StringBuffer sb=new StringBuffer("ProcessManager instances:");
        Hashtable htTemp=getProcesses();
        Iterator it=htTemp.keySet().iterator();
        String key=null, status=null, type=null;
        Process process=null;
        ProcessInstance pInstance=null;
        while(it.hasNext()) {
            key=(String)it.next();

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        Iterator  domainNames = mDomainTable.keySet().iterator();
        while (domainNames.hasNext())
        {
                String    domainName  = (String) domainNames.next();
                Hashtable aTable    = (Hashtable)mDomainTable.get(domainName);
                mbeans.addAll(aTable.keySet());
        }
        return ( mbeans );
    }
  
    /**

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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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                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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                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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    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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