Inversion of Control (IoC) Inversion of control is a common characteristic of frameworks. As the name suggests it inverts something. So, What aspect of control it is inverting? Early user interfaces were controlled by the application program. You can see commands like “Enter name”, “Enter address”; Your program would drive the prompts and pick…

Servlet A servlet is a small Java program that runs within a Web server. Servlets receive and respond to requests from Web clients, usually across HTTP, the HyperText Transfer Protocol. We can implement 2 types of interface. javax.servlet.GenericServlet javax.servlet.http.HttpServlet Life Cycle of Servlet First servlet is constructed, and initialized with init…

Flex-box Flexbox is also known as flexible box module. It is also known as one-dimensional layout module. The two axes of flexbox:- The main axis is defined by flex direction which have 4 values:- a. row b. row-reverse c. column d. column-reverse

Normalization is the way to organize data in database. It is used to remove insertion, updation and deletion anomalies. Normal form is used to reduce redundancy from the database. Types of Normal Forms:- First Normal Form:- First criteria of 1NF is that table must contain atomic value. Single attributes of a table can’t hold…

Time complexity Time complexity is the computational complexity that describes the amount of computer time it takes to run an algorithm. In simple words we can say that it tells how much time our program is taking to run. Calculating time complexity:- int i=0; Here i variable is taking constant time. …

In this blog we are going to see about collections in java. So collection is a framework in java by which we can do many predefined task by using predefined methods in collection framework. Array:- When we want to store more than one elements inside one reference then we use…

Object-Oriented Programming is a programming paradigm which is based on the concept of objects. Here objects contains 2 things data and code. Data can be in the form of fields. In other words fields can be called attributes or properties. Concepts in Object-Oriented Programming Object Class Inheritance Encapsulation Abstraction Polymorphism 1. Object: …