Issue on Enumeration Interface in java

Question

1.00/5 (2 votes)

See more:

Here i know that Enumeration is a interface.is interface has the ability of hold data within it.This code i have got from Javatutorialpoint site.please clarifymu doubt.

Java

import java.util.Vector;
import java.util.Enumeration;

public class EnumerationTester {

   public static void main(String args[]) {
      Enumeration days;
      Vector dayNames = new Vector();
      dayNames.add("Sunday");
      dayNames.add("Monday");
      dayNames.add("Tuesday");
      dayNames.add("Wednesday");
      dayNames.add("Thursday");
      dayNames.add("Friday");
      dayNames.add("Saturday");
      days = dayNames.elements();
      while (days.hasMoreElements()){
         System.out.println(days.nextElement()); 
      }
   }
}

Posted 15-Nov-15 18:43pm

Member 11944583

Updated 15-Nov-15 19:16pm

Patrice T

v2

Add a Solution

Comments

Patrice T 16-Nov-15 1:16am

Not a question.
Improve the question until one can understand it without the knowledge of details you didn't tell us.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Answer 1 · 2015-11-15T19:38:00

No, you "know" it wrong. Interface is not something that holds data. Interface is interface. And there is no "doubt" to clarify. It would be good if you explained some doubt, but you just show the code sample, not even written by you. This is not a question, and not a productive way of getting knowledge.

The sample you've looked at is from here: http://www.tutorialspoint.com/java/java_enumeration_interface.htm[^].

(It's too bad you did not provide the link. Do you think that members have nothing more useful to do than searching articles by your code fragments? Please always reference all you quote. After all, failure to do that violates basic rights of the authors of the original content.)

The interface uses in this code sample is this: http://docs.oracle.com/javase/7/docs/api/java/util/Enumeration.html[^].

Everything is explained quite clearly. The purpose of this interface is to provide the construct supporting iteration, "for" loops.

First of all, it's important not to mix up this particular interface with enumeration types: https://docs.oracle.com/javase/tutorial/java/javaOO/enum.html[^].

Most likely, the only thing which can help you would be systematic study of the language and technology, starting from the fundamentals. You need to learn very well what are types and instances, variables and objects, what is interface, how interfaces work, and a lot more.

—SA