Effective programming tips
Here is a list of 10 commonly used Eclipse shortcuts for Java developers. Ctrl + Shift + T: Open a type (e.g.; a class, an interface) without browsing through list of packages Ctrl + Shift + R: Open any file quickly without browsing for it in the Package Explorer Ctrl + O: Go directly to …
Here is a simple Javascript function to validate a date in US format. function isDateValid(date) { //RegEx to validate date /* * ^[0-1][1-2] : The month starts with a 0 or 1 followed by either a 1 or a 2 * [- / ]?: Followed by an optional “-” or “/”. * (0[1-9]|[12][0-9]|3[01]) : The …
Joomla is a wonderful platform to publish websites. With readily available templates you can have your website up and running in no time. Sometimes though you may need to direct your visitors to a different page than your regular home page, for instance you may want to direct all the visitors to a promotion page …
Recently a reader contacted me with a question about sorting numbers in Java. After sorting the number the program then needs to print the largest and smallest values. I have written a post earlier that shows one way of finding largest and smallest numbers. That approach used Arrays but the reader wanted to find largest …
Many Java beginners find it difficult to differentiate between == operator and the “equals()” method when comparing String variables in Java. They assume that both operations perform the same function and either one can be used to compare two string variables. I have even seen many experienced programmers committing the mistake of using “==” to …
As web developers we have the tendency to blame web browsers for inconsistencies and for not displaying the pages as designed. Most of the time the blame is justified, but there are instances when the blame lies at the feet of the web developers. For example, incorrect CSS declarations, missing closing tags in HTML documents …
Using margin or padding properties of CSS in the following syntax is straight forward. { padding-top:5px; padding-right:12px; padding-bottom: 15px; padding-left: 20px; } But the shorthand version of these properties may be a little difficult to remember for CSS beginners. The above CSS declaration can be written as; {padding:5px 12px 15px 20px;} Now how do you …
It is amazing that many web developers still use onload method embedded in the BODY tag, like <HEAD> <BODY onload=”document.contact.userID.focus();”> <form name=”contact”> <input type=”text” name=”userID” > </form> </BODY> </HEAD> There are two problems with this line of code. Embedding code (behavior) with HTML (structure) makes it difficult to maintain the page. onload() method will executes …
Color coordination plays a big role in the look and feel of a website. An appealing color scheme is an important prerequisite for eye catching web design. Dull or very sharp colors or mismatch colors will not only look ugly it may overshadow other nice elements of your website. Choosing vibrant, harmonious colors that are …
Positioning text in the center of an element is easily done using text-align:center property. But how do you position an entire element, for e.g; a div or an image in the center of the containing parent element? For example, if you want to put an image at the center of your header div how do …