JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS


Java Enumeration Sample Code

Description:

A class that implements Enumeration interface provides access to series of elements one at a time. You need to call nextElement method to get next element in the series. Also hasMoreElements() method gives you status about the availability of next element in the series.


Code:
package com.myjava.Enumeration;

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

public class MyEnumeration {
    public static void main(String a[]){
        Vector<String> lang = new Vector<String>();
        Enumeration<String> en = null;
        lang.add("JAVA");
        lang.add("JSP");
        lang.add("SERVLET");
        lang.add("EJB");
        lang.add("PHP");
        lang.add("PERL");
        en = lang.elements();
        while(en.hasMoreElements()){
            System.out.println(en.nextElement());
        }
    }
}

Example Output

JAVA
JSP
SERVLET
EJB
PHP
PERL

List Of Collection Classes Sample Programs:


List Of Util Classes Sample Programs:

Knowledge Center
What is fail-fast in java?
A fail-fast system is nothing but immediately report any failure that is likely to lead to failure. When a problem occurs, a fail-fast system fails immediately. In Java, we can find this behavior with iterators. Incase, you have called iterator on a collection object, and another thread tries to modify the collection object, then concurrent modification exception will be thrown. This is called fail-fast.

About Author

My name is Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me at java2novice@gmail.com or you can comment on the page.

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Reference: Java™ Platform Standard Ed. 6 - API Specification | Java is registered trademark of Oracle.
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