Java Tips Blog

import java.util.Enumeration;
import java.util.Iterator;
import java.util.Vector;
 
public class link {
	public static void main (String []str){
 
		Enumeration enum_cities;
 
		Vector cities = new Vector();
		cities.add("New York");
		cities.add("Sydney");
		cities.add("Frankfurt");
		cities.add("Delhi");
		cities.add("Milan");
		cities.add("Paris");
 
		enum_cities = cities.elements();
 
		while (enum_cities.hasMoreElements())
			System.out.println(" -Enum- " + enum_cities.nextElement()); 
 
		Iterator it_cities = cities.iterator();
		String str_temp= "";
 
		System.out.println(" Actual size of vector: " + cities.size());
 
		while (it_cities.hasNext())
		{
			str_temp = it_cities.next().toString();
			if(str_temp.equals("Sydney"))
				it_cities.remove();
			else
				System.out.println(" -Iterator- " + str_temp);
		}
 
		// iterator removed Sydney from vector so its size is reduced to 5
		System.out.println("Current size of vector: " + cities.size());
 
	}	
 
} 
 
If you want to use enumeration with arrays, following code sample code:
 
import java.lang.reflect.Array;
import java.util.Enumeration;
 
final public class ArrayFactory {
	static public Enumeration makeEnumeration(final Object obj) {
		Class type = obj.getClass();
		if (!type.isArray()) {
			throw new IllegalArgumentException(obj.getClass().toString());
		} else {
			return (new Enumeration() {
				int size = Array.getLength(obj);
 
				int cursor;
 
				public boolean hasMoreElements() {
					return (cursor < size);
				}
 
				public Object nextElement() {
					return Array.get(obj, cursor++);
				}
			});
		}
	}
 
	public static void main(String args[]) {
		Enumeration e = makeEnumeration(new int[] { 1, 3, 4, 5 });
		while (e.hasMoreElements()) {
			System.out.println(e.nextElement());
		}
 
	}
}