Introduction to IOC and DI in Java development. — What is dependency injection? If one class is highly dependent on another class then we can say that both classes are tightly coupled. For example. In the above example, the Pet class is dependent on Dog and Cat class. Now let us use an Interface.

An introduction to servlets in Java Enterprise development. — What is Servlets? Servlets is a server-side Java API that along with the server is used to handle the requests from web clients. It is a collection of classes and interfaces which along with core Java API used to process requests. Why Servlets? Communication with any website is series of requests and responses. To handle…

Introduction to relational database normalization. — The goal of database design is to generate a set of relation schemas that allows us to store information without unnecessary redundancy or duplication. …

A brief introduction to the OOP concept in Java. — An object is a real-world entity that has both properties(states) and behaviors(methods). For ex. a book item can have properties like title, author, price, publishers, etc, and can have methods like getBookTitle, getBookPrice, etc. similarly in our software system there can be many entities that can be treated as an…

Need of collection framework — Why do we need a collection framework in java?. Before the collection framework was introduced, arrays, vectors, and the hash table were used to store data and perform add, search, sort, and delete operations on them. Following are differences between collection and array. To overcome the above problems with array collection framework was introduced in the Java 1.2 version.

A tool to keep track of software development. — What is the version control system?. A version control system which is also known as a source code manager is a tool that manages different versions of our source code. There are different types of version control systems like git, svn, etc. …

Object-oriented concepts in java — Following is a brief description of different OOP concepts. Objects: Objects represent a real-world entity that has properties and methods. An object can also contain some other object. For example, an library management system can have objects like books, students, etc. Class: Class is a blueprint or we can say…