JCEKS stands for Java Cryptography Extension KeyStore and it is an alternative keystore format for the Java platform. Storing keys in a KeyStore can be a measure to prevent your encryption keys from being exposed. Java KeyStores securely contain individual certificates and keys that can be referenced by an alias for use in a Java program.The process of storing and loading different entries in JCEKS is similar to what JKS does. So please refer to the article Different types of keystore in Java -- JKS. Change the keystore type from JKS to JCEKS accordingly when calling KeyStore.getInstance().In ...

This tutorial assumes that you already have an activity and are using an XML layout.Open the layout XML and add the button element.  Assign an ID with the “@+id” operator.  The + tells Android to generate an ID for this element so that you can reference it in your Java files.This is an example. Your layout and text elements will probably be very different. In this example case, the ID of the button is “close”.<Button android:id="@+id/close" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="tru...

Sass is one kind of CSS Preprocessor, it can make CSS development simple and maintainable. But to show its real power we may need to have Compass.This article is to introduce Compass. Once you learn Compass, your CSS development efficiency will be largely improved.Here we assume you have mastered the major uses of CSS, if you know Sass, then it's better. It's still ok if you don't know Sass.1. What is Compass?In simple, Compass it the toolkit of Sass.Sass itself is only a compiler, Compass encapsulates some templates and modules based on Sass. The relationship between Sass and Compass is simil...

You might have seen my earlier post related to installing PHP, Apache and MySQL on UBUNTU 11.10. That process contains number of steps and some lengthy commands which we can not remember easily.After good comments from Gaurav and Coward I have managed to get that lengthy process in just 2 steps. So I thought its great to share with all readers to they can get benefit as well.Before starting make sure that you have root user’s access to perform the sudo action. So now let...

This Bash shell scripting guide is not a detailed study but a quick reference to the BASH syntax. So lets begin...Common environment variablesPATH - Sets the search path for any executable command. Similar to the PATH variable in MSDOS.HOME - Home directory of the user.MAIL - Contains the path to the location where mail addressed to the user is stored. IFS - Contains a string of characters which are used as word seperators in the command line. The string normally consists of the space, tab and the newline characters. To see them you will have to do an octal dump as follows:$ echo $IFS | od -b...

My friend contacted me on twitter and asked for advice on different sources on how to learn iOS apps. Since this paragraph will already exceed 140 characters, I'm posting here, instead.(Obviously, reading this blog regularly is a great way to pick up some iOS development tricks)To get started, some people buy a book or find some good online tutorials. I tried both approaches, and the online tutorials were definitely better. I found Stanford's class on iPhone Development, available for free on iTunesU, to be a great place to start. However, watching lectures is time-consuming and, frankly, bori...

Update #3: Using the techniques outlined in this article I have rolled out and initial release of imgscalr.com.Feel free to download the JS source (it is heavily commented) and take a look at how it was rolled out. Unfortunately the required File API support is only in Chrome and Firefox currently, Safari gets it in version 6, Opera possibly in version 11 and possibly IE 10 (9 has no support).IntroductionOver the last day I’ve been trying to learn how to use the new HTML5 Drag and Drop API as well as the new File API. I want to create a really nice drag-and-drop...

Step 1 - AJAX file uploadAJAX file upload tutorialFirst of all I have to say that to create a pure AJAX file upload system is not possible because of security limitations of JavaScript. All of the Ajax upload systems I know use some third party tool/package or only mimics the AJAX feeling. Even so it makes file upload process a bit nicer. In the next section I will present you a solution which imitates the AJAX process, but uses a normal upload process and iFrames.The concept: Create a simple HTML form for file uploadSet the target to an iFrame which is on the actual page but not visibleC...