UNIX/Linux

Copy CD to ISO image

In order to copy a CD or DVD to an ISO image in Linux, use one of the following commands below: dd if=/dev/cdrom of=image.iso or: […]

HTML, Javascript, JSP

A complete AJAX example

There are several third party libraries that simplify the programming that is needed to make your web pages communicate with the server more dynamically, and […]

Java

Java Programming Tips

Tip #1 – Avoid NullPointerException situations When comparing strings against specific values in Java, you can easily avoid the java.lang.NullPointerException problem by specifying the string […]