DEV Community: Sanchit Singhal

Want to start your journey as a Java Developer?✨ But how to learn Java with industries oriented way?🔥😎

Sanchit Singhal — Sat, 08 Aug 2020 22:15:15 +0000

An easy way to excel in the field of Java as a Full-stack or Back-end Developer

Learn Java from scratch just like the implementation in IT industries👨‍💻.

What we will cover🧾 ?

Role of Java in any software application
How to start learning Java from scratch?
Business Unit(BU) Requirements for Java Developer
Learning Path for Implementation based learning Java 8 +

Role of Java in Software Applications

Either you are working on a web-based, multiple-platform, android based, and stand-alone applications Java plays a very important when it comes to applying logic at the backend. While working with a Full-stack application you can completely build your backend with Java.
Most of the companies are using Java and its frameworks like Spring MVC, Spring Boot, and so on for building their backend of the applications. So if you are thinking to become a backend developer then you can opt for Java and start learning with the path specified by IT industries person.

How to start learning Java from scratch?

First of all, you need to decide whether you are learning Java for personal interest or to become a professional Java Developer.
If you want to become a Java Developer then you start learning the Java with the Implementation based learning. Because when you will work on the project in the IT industry then you need to know the correct and as many as the implementation of each and every topic in Java.
So for that, you can start learning Java as Industry oriented based and for that you must have prior knowledge of BU requirements of any company related to Java Programming.

Business Unit(BU) Requirements for Java Developer

While you enter in any company as a Java Developer then you must have knowledge of some most important concepts of Java with their real-life implementations. For e.g., you should know when you need to apply OOPs concepts in which scenario of a particular project, and how you can handle exceptions at which point.
Some of the business requirements related to Java 8+ Programming are listed below:

Declarations and Access Control
Object Oriented Programming (OOPs concepts)
Assignments
Operators
Flow Control, Exceptions
Maven Framework
JUnit Testing
String, I/O Formatting and Parsing
Generics and Collections
Threads
Concurrent Patterns
Concurrent Collections
Lambda Expression
Stream API
Layered Architecture
Regular Expression

Learning Path for Implementation based learning Java 8

So the most awaited moment is here. The learning path for Implementation based of Java Programming. I am implementing the Java Programming based questions which are designed by a France based MNC and it is purely for those who want to become a Java Developer. You can find the complete implementation with the proper comments and documentation so that you can find the questions behind the implementations. I am attaching the Github links below for Implementation based learning.

I hope you like it and found it useful. If so then please give me a star⭐ on Java repository and follow me on Github for more such kinds of updates related to Java and another Programming.

✨GITHUB LINKS for Implementation based Java Programming✨

1️⃣ First you can refer the Professional-Level-1 which is mentioned below:

sanchit2107 / Learn-Java-with-Implementation-Professional-Level-1

A complete series of Java Implementation from Hello World to important concepts like OOPs, Multi-Threading, Exception Handling, Abstract Classes, Overloading/Overriding, and so on.

Learn-Java-with-Implementation

A complete series of Java Implementation from Hello World to important concepts like OOPs, Multi-Threading, Exception Handling, Abstract Classes, Overloading/Overriding, and so on. With these implementation of the Java Questions, you can make your own project working with Java backend An easy way to excel in the field of Java as a Full-stack or Back-end Developer.

Java is the most commonly used programming language all over the world by most of the big Product based companies.

There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult. – C.A.R. Hoare (British computer scientist, winner of the 1980 Turing Award)

📌 Topics to be covered for Implementation:

Object Oriented Programming

Encapsulation
Inheritance, Is-A, Has-A
Polymorphism
…

View on GitHub

2️⃣ Second you can refer the Professional-Level-2 (Project-based learning) which is mentioned below:

sanchit2107 / Java-Implementation-Professionals-Level-2

Java-based programs -- part of Java Full-Stack Program. A complete series to learn Java for becoming a Full-Stack Java Developer

😊Project based learning- Learn Java like IT Professionals

Java-based programs -- part of Java Full-Stack Program. A complete series to learn Java for becoming a Full-Stack Java Developer.

📌 Topics to be covered for Implementation:

Declarations And Access Control..

Identifiers & JavaBeans
Legal Identifiers
Sun's Java Code Conventions
JavaBeans Standards
Declare Classes
Source File Declaration Rules
Class Declarations and Modifiers
Concrete Subclass
Declaring an Interface
Declaring Interface Constants
Declare Class Members
Access Modifiers
Non-access Member Modifiers
Constructor Declarations
Variable Declarations
Declaring Enums

Operators

Java Operators
Assignment Operators
Relational Operators
instanceofComparison
Arithmetic Operators
Conditional Operator
Logical Operators

Maven Fundamentals

Introduction
Folder Structure
The pom.xml
Dependencies
Goals
Scopes
The Compiler Plugin
Source Plugin
Jar Plugin

JUnit Testing

Types of Tests
Why Unit Tests Are Important
What's JUnit?
JUnit 5 Architecture
IDEs and Build Tool Support
Setting up JUnit with Maven
Lifecycle Methods
Test Hierarchies
Assertions
Disabling Tests
Assumptions
Test Interfaces and…

View on GitHub

If you like any of the two Java Implementation based Programming repository then Please give me a star⭐ on Github, it makes my day and will pay off my hard work while creating this post and repository🤝🏻.

I hope you like this post and if you want similar posts in the future related to Java frameworks like Spring Boot or any other technologies like Web Development or Database then please mention the same in the comment box👇🏻.

It will be great if you follow me on Github to share new ideas and share knowledge.

My Github Profile

sanchit2107 / sanchit2107

It is a 😁 secret😁 and ✨special ✨ repository that you can use to add a README.md to your GitHub profile. Make sure it’s public and initialize it with a README to get started.

Hello Developers 👋

📌 Here are some idea about my profile and work:

👨‍💻 I’m currently working on ...

Java and Spring Boot
Angular and REST API
Google Cloud Platform

🌱 I’m currently learning ..

MongoDB
Linux Programming Constructs
Django

👯 I’m looking to collaborate on ..

Open source Projects
Full-stack Development
Software Development, Training and Consulting

🤔 I’m looking to work with ..

IT industries
SDE team

💬 Ask me about ..

Computer Science and Engineering
Web Development

📫 How to reach me ..

View on GitHub

See you soon Developers with another post

Happy Learning and Stay safe

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Flight Management System: Angular 9 + Spring Boot + REST APIs

Sanchit Singhal — Wed, 20 May 2020 19:22:08 +0000

Abstract

The Flight Management System is a Java-based booking solution for flight tickets. It consolidates data provided by different airline carriers and hence provides the user details and rates in real-time. Travelers may want to make changes in their bookings. The application allows them to book, cancel, view, and update their bookings with ease. Other than this, it eases the management of bookings too. All the bookings, flights, schedules, and routes can be viewed, added, and modified on a single application by the administrator.

Scope

Inscope:

Following is the functionality provided by the system:
There are two categories of people who would access the system: customer and administrator.
Each of these would have some exclusive privileges.

The customer can:

Create his user account.
Login into the application.
Check for available flights.
Make a booking.
View the bookings made.
Cancel or modify a booking.

The administrator can:

Login into the application.
Add flight, schedule and route details.
View the flight, schedule and route details.
Cancel or modify the flight, schedule and route details.

Outscope:

The following functionalities have not been covered under the application:

The application does not cover boarding pass generation and seating plans.
Third-party applications like email & SMS integrations.
Payments are not yet accepted by the application.

How I built it

Hey, all of you are curious to know how I build this and working with different technologies while working on this Project. First of all this project was running under my leadership. I started working from backend with Spring Boot (Java-based framework) then go with the implementation of REST APIs and Controllers and finally, I built the frontend using Angular with all required validations and all.

Technologies Stack:

Backend:

Java
Spring Boot
REST
Microservices
JPA

Frontend

HTML 5
CSS 3
Bootstrap 4
Angular 9

Apart from this, I used Agile methodology while working on this project and look at the Sprint Backlog on a daily basis. You can find the Sprint and Product Backlog on my Github Profile.

Strategy followed while doing code:

While doing code for the project I tried to make a different branch on git for the different module or you can say that for different components. This made my task easy and I am able to integrate the project effectively and followed the Agile methodology just because while each time I merge the branch into master then the project was in demonstration state to the client. In this way, till the end I used to follow these steps and developing the project.

Link to Code

I know you all are curious to have a look at my code and will give suggestions for my improvement. So here is my GitHub link for the code.
In the attached github url you can find my code for the above mentioned project based on Angular 9 and Spring Boot.

Checkout my Code at GitHub and follow me there for more tech related stuffs:

sanchit2107 / Flight-Management-System

This consists of the Flight Management System using Spring Boot and Angular 9. A complete example of learning Full-stack Development along with implementation

Flight Reservation System

🌐 Description

The Flight Reservation System is a Java-based solution that allows users to quickly book flights and manage booking information, updates, and cancellations easily. It consolidates data from different airline carriers and thus provides all the necessary details and rates in real-time. In addition, administrators of flight data can also quickly view, create, and update any information about flights, bookings, routes, and schedules.

💻 Technologies

Backend Technologies:

Java 8
Spring Boot
JPA
REST API
JUnit Testing

Frontend Technologies

HTML
CSS
Bootstrap
Typescript
Angular

Database Management

Oracle
H2 Database

ℹ️ Background

How many times have you started dreaming of a new trip, but then the hassle of planning, finding the right flight, and booking it was so frustrating as to make you wonder if the trip was worth it?! Those frustrations end today with the Flight Reservation System's one-stop shop for your tickets!

✈️ Features

The Flight…

View on GitHub

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I hope you like this post and it will be useful for you during your development phase. If you like this and find any of the useful thing for your part then Please like and share this post and follow me for more updates related to Open Source Contribution.

Thanks

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Sanchit Singhal

My strengths are my attitude that I like to take challenges, self motivated and self disciplined person.