Today, I will share a very basic Java program that converts an ArrayList to array. For most Java developers this is a routine task, but many new comers to Java have asked me this question of how to convert an array to ArrayList. Here is the example...

Amazon.com being the largest online retailer offers a variety of merchandise. Because of their huge selection of products it is no surprise that Amazon affiliate program is so popular among bloggers. With an astonishing number of products available...

My earlier post on how to validate email address, SSN and phone number validation using Java regex still attracts lot of visitors. Today I realized that another piece of data that many programmers need to validate is the date. Many Java applications...

One of most visited posts on this blog is How to read properties file in Java. In that post I explained how you can read from a properties file. But many people came to that post searching for an example on how to write to a properties file. So I...

One of the routine tasks in many Java applications is to convert a string to a number. For instance, you may have a form where user submits his or her age. The input will come to your Java application as a String but if you need the age to do some...