Java Utililty Methods Hashtable Create

List of utility methods to do Hashtable Create

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Description

The list of methods to do Hashtable Create are organized into topic(s).

Method

HashtablecreateHashtable(int size)
create Hashtable 
return new Hashtable((int) Math.ceil((double) size / 0.75));
Object[]getArray(Hashtable hash)
This method was created in VisualAge. 
int len = hash.size();
Object[] objs = new Object[len];
Enumeration e = hash.elements();
for (int i = 1; e.hasMoreElements(); i++)
    objs[len - i] = e.nextElement();
return objs;
EnumerationgetGUIDS(Hashtable table)
get GUIDS 
TreeSet<String> set = new TreeSet<>();
Enumeration eenum = table.keys();
while (eenum.hasMoreElements()) {
    String str = (String) eenum.nextElement();
    set.add(str.substring(0, str.indexOf(";")));
return Collections.enumeration(set);
ObjectgetKeyByEntry(Hashtable t, Object value)
returns a value. 
Object key;
for (Enumeration e = t.keys(); e.hasMoreElements();) {
    key = e.nextElement();
    if (value.equals(t.get(key))) {
        return key;
return null;
...
HashtablenewHashtable(int initialCapacity)
new Hashtable 
return new Hashtable<K, V>(initialCapacity);
HashtablenewHashTable(int initialCapacity, float loadFactor)
new Hash Table 
return new Hashtable<>(initialCapacity, loadFactor);