Enumeration

//第一个        Vector v = new Vector();        v.addElement("Lisa");        v.addElement("Billy");        v.addElement("Mr Brown");        Enumeration e = v.elements();// 返回Enumeration对象        while (e.hasMoreElements()) {            String value = (String) e.nextElement();// 调用nextElement方法获得元素            System.out.print(value);        }/////////////////////////////////////LisaBillyMr Brown

//第二个        Hashtable ht = new Hashtable();        ht.put("1", "One");        ht.put("2", "Two");        ht.put("3", "Three");        Enumeration e = ht.elements();        while (e.hasMoreElements()) {            System.out.println(e.nextElement());        }////////////////////////////////////*ThreeTwoOne*/