About J Singh

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So far J Singh has created 269 blog entries.

August 2016

Groovy Beginners Tutorial

By | 2017-07-21T21:42:27+00:00 August 12th, 2016|groovy|

Installation The only prerequisite for installing Groovy is that you must first have a 1.4 or 1.5 or 1.6 JDK installed (available free from http://java.sun.com/j2se/) and the JAVA_HOME environment variable set to the location of your JDK installation. […]

Compiling and Running Groovy

By | 2017-07-21T21:36:56+00:00 August 8th, 2016|groovy|

We have used Groovy in direct mode. In this part, there is another way of using Groovy  is to compile it to Java byte code and running it as regular Java application code within a Java Virtual Machine (JVM). This is called precompiled mode. Both ways execute Groovy inside a JVM eventually, and both ways [...]

July 2016

Getting started with react js

By | 2017-07-22T17:25:39+00:00 July 31st, 2016|React JS|

Introduction React JS is one of the most talked about front end frameworks of 2015. Facebook initially promoted it as “just the V in MVC” or “just the view layer” but I can assure you that it is much more than that. A lot of positive news has been around react for almost a couple [...]

June 2016

Android layout tutorial for beginners

By | 2016-06-12T05:40:22+00:00 June 12th, 2016|Android|

Making sure that your Android Applications looks modern, aligned and the way you want the world to see it is highly crucial. There are a number of reasons why the UI or the User interface holds a lot of importance in the application development process. First, the UI is the component that the user first [...]

Android Emulators

By | 2016-06-01T02:54:41+00:00 June 1st, 2016|Android|

Application development took pace ever since the Android Smartphone game started becoming strong. Several developers have made their way into Android Development, however, one of the most frequently asked questions is about the best way of testing an application after writing the code. […]

April 2016

JSP JSTL Core Tags – contd.

By | 2017-07-14T22:22:16+00:00 April 17th, 2016|JSP|

JSTL IF Tag The If tag evaluates an expression and displays its body content only if the expression evaluates to true. In the example, we are going to display “Special Discount” if a student is a gold customer. Code Example <c:if test="${tempStudent.goldCustomer}"> Special Discount </c:if> Explanation So this code basically is just checking whether a [...]

JSP JSTL Core Tags

By | 2017-07-14T22:22:01+00:00 April 17th, 2016|JSP|

As you know there are five collections of tags in JSTL, in this tutorial, we are going to discuss some of the core tags in the JSTL library. Now in JSTL Core Library, there are approximately 15 tags. Let’s quickly go through them one by one. […]

Java Date format

By | 2017-07-22T23:04:20+00:00 April 16th, 2016|Code Base|

Here i will provide list of Java Date formats that are used in Java frequently. There are different ways you can achieve the same result in Java. 1- Using Predefined Format You can directly use DateFormat class to format date in predefined style. DateFormat has predefined 4 styles which can be used for quick formatting [...]