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What does the import statement in java do? In an earlier tutorial we saw an introduction to java. In this tutorial, we will look at using imports in java. To state it plainly – import statements allows us to use the name of the class in our code instead of its fully qualified name. What … Read more
Introduction to Java – The first Java program In the first tutorial we saw an introduction to java class and objects and then we learnt about Java packages. In this tutorial, we start our wonderful journey into the world of java by writing our first program. We will write the ubiquitous “Hello World” program. The … Read more
If you get an error on PhoneGap App that says “Unable to download archive from the server” when using PhoneGap on Windows then try this : Download the latest build zip from https://github.com/phonegap/phonegap-app-desktop/releases and replace the contents of C:\Program Files (x86)\Adobe\PhoneGap\PhoneGap Desktop with the contents from this zip Open up Windows firewall -> Click on … Read more
What is Bridge design pattern? The Bridge Design Pattern is used when there is one set of classes (abstraction) that define features and another set of classes (implementation) that provide the implementation for that features. You then ‘add’ a bridge by injecting the base of the implementation hierarchy to the base of the abstraction hierarchy. … Read more
This tutorial gives an introduction to Amazon EC2 Instance. Introduction to Amazon EC2 instance (Elastic Cloud Compute) What is Amazon Elastic Cloud Compute (EC2) Amazon Elastic Cloud Compute (EC2) is a service from Amazon that allows you to create machines in the cloud on-demand. Traditionally, the procedure for obtaining a new machine is probably not … Read more
This tutorial provides an introduction to java packages and explains their features and benefits. What are Java Packages? Java packages are a way to logically and physically organize your code. Think of packages as a hierarchical folder structure within which you place your file. Let’s start with an example. In this example, we create a … Read more
This article shows how to Mount Amazon Elastic File System (EFS) to EC2 on Amazon AWS. For those of you who don’t know what EFS and EC2 are, here’s a one line introduction. One line introduction to Amazon Elastic File System (EFS) and Amazon EC2 EFS – Elastic File System – Amazon EFS is a … Read more
In this tutorial, we will introduce Java class and object. By now you must have heard that Java is an object-oriented programming language and everything in java is an object backed by a template called a class.The aim of this tutorial is to introduce new programmers to classes and objects and not to explain the … Read more
If you are new to programming in Java, then this is the first article that you should read. In this article we explain how a java program is written and run. The purpose of this example is give you a feel of a simple Hello World program in java, don’t worry if you don’t understand … Read more
Contents Pre-Requisite Concept Overview Required Libraries Diagrammatic Representation Sample Program Source Package Structure Source Code Running Sample Program Browsing the Program In this tutorial we model a one to many bidirectional relationship between two entities using JPA Annotations. This tutorial is divided primarily into the following sections: Concept Overview Sample program Pre-requisite Basic familiarity with … Read more