The No Nonsense Guide To Java Spring Boot

Go from Java Developer to Backend Engineer using Java 17 + mySQL

What you'll learn

Java Spring Boot

Controller, Service, Repository layers

Exception Handling & Reponses

Validation

Query String Parameters, @Query, Search

JDBC, JPA, Hibernate, Spring Data, ORMs

Unit Testing

Headers

Relational Mappings

Logging

Cache

External API Integration

Spring Security (Basic Auth)

Spring Security (JWTs - JSON Web Tokens)

Dependecy Injection

Spring Boot Actuator

Transactions & @Transactional

Dependency Injection, Inversion of Control, Spring Container

Requirements

Proficient in Java 8

Description

This comprehensive course is designed to transition Java developers into proficient backend engineers by mastering the essentials of Spring Boot. Unlike other courses that dive into complex concepts before covering the basics, this course follows a hands-on, real-world approach. We focus on building practical applications using live production code techniques, modern Java abstractions, and clear naming conventions commonly used in industry projects.You’ll start by understanding how Spring Boot works before diving into the why—giving you the tools to build solid foundations before exploring advanced topics. Whether you’re new to Spring Boot or looking to solidify your backend skills, this course offers a straightforward, no-nonsense guide that covers all the essential components needed for building scalable, production-ready applications.What You Will Learn:Controllers, Services, Repositories, and Entities: Understand the core building blocks of Spring Boot applications, including how to set up RESTful APIs, business logic layers, and data access layers.Database Integration with MySQL: Learn how to run MySQL queries, set up database connections, and work seamlessly with relational databases.Exception Handling & Custom Error Responses: Master best practices for handling errors, defining custom error responses, and returning meaningful error messages in production.Input Validation: Implement input validation to ensure data integrity, and protect against invalid requestsSpring Data JPA & Custom Queries: Explore query string parameters, custom query methods with @Query, and interact with databases using Spring Data JPA.JDBC, JPA, and Hibernate: Learn the differences between JDBC and JPA, understand ORM (Object Relational Mapping) with Hibernate, and when to use each in your applications.Unit Testing: Write unit tests to ensure your code works as expected, covering both service and repository layers using tools like JUnit and Mockito.Working with HTTP Headers: Learn how to work with request and response headers, implement custom headers, and pass data effectively through API endpoints.Relational Mappings (OneToOne, OneToMany, ManyToMany): Understand how to model real-world relationships between entities in a relational database using JPA annotations.Logging: Implement effective logging strategies to track application behavior, debug issues, and monitor performance.Caching for Performance Optimization: Leverage caching strategies to improve application performance and scalability, including setting up default caching and custom cache eviction policies.External API Integration: Learn how to consume external APIs, handle authentication, and integrate third-party services into your Spring Boot application.Spring Security: Explore the built-in security mechanisms, set up Basic Authentication, and secure your applications with JWT (JSON Web Token) for token-based authentication.Dependency Injection & Inversion of Control (IoC): Gain a solid understanding of how Spring Boot manages dependencies and objects, ensuring modular and maintainable code.Monitoring with Spring Boot Actuator: Enable real-time monitoring of your application, track performance metrics, and expose health and status endpoints using Spring Boot’s Actuator.Transactions & @Transactional: Manage database transactions, understand transactional boundaries, and ensure data consistency using Spring’s @Transactional annotation.Advanced Java Concepts in Spring Boot: Delve into practical Java topics frequently used in Spring Boot applications, such as UUIDs for unique identifiers, event-driven programming, handling various return types, managing JSON data in MySQL, and implementing versioning for your APIs.

Overview

Section 1: Introduction

Lecture 1 Introduction

Lecture 2 Setup Environment

Lecture 3 HTTP Request Basics

Lecture 4 Controller Class

Lecture 5 Service Class

Lecture 6 Dependency Injection Basics

Lecture 7 Service Class Abstraction

Section 2: Database

Lecture 8 Intro

Lecture 9 Entity Class

Lecture 10 Repository Class

Lecture 11 Create Table in mySQL

Lecture 12 CRUD Explained with Http Requests

Lecture 13 DTOs

Lecture 14 Update Service Classes with Repository Calls

Section 3: Exception Handling

Lecture 15 Intro

Lecture 16 Spring Boot's Default Error Response

Lecture 17 Custom Exception

Lecture 18 Custom Response

Section 4: Validation

Lecture 19 Intro

Lecture 20 Custom Validation (if statements)

Lecture 21 Spring Starter Validation (annotations)

Lecture 22 Wrap Up

Section 5: Search

Lecture 23 Intro / Query String Parameter explained

Lecture 24 Spring Data JPA

Lecture 25 Custom Query Method / JPQL

Lecture 26 Note on Custom Native Query

Section 6: JDBC, JPA, Hibernate, Spring Data

Lecture 27 Discus the layers of Abstraction

Section 7: Unit Testing

Lecture 28 Intro

Lecture 29 Sanity Check

Lecture 30 Unit Test 1

Lecture 31 Unit Test 2

Lecture 32 Run all tests

Lecture 33 Notes

Section 8: Http Headers

Lecture 34 Intro

Lecture 35 Add a Header

Lecture 36 Return JSON or XML based on header

Section 9: Relational Mappings

Lecture 37 Intro

Lecture 38 OneToOne

Lecture 39 OneToOne Notes

Lecture 40 OneToMany

Lecture 41 ManyToMany

Lecture 42 Notes

Section 10: Logging

Lecture 43 Intro

Lecture 44 Logging

Lecture 45 Log File

Section 11: Cache

Lecture 46 Intro

Lecture 47 Get Baseline

Lecture 48 Enable Caching & @Cacheable

Lecture 49 Cache Evict

Lecture 50 Cache Put

Lecture 51 Custom Cache Configuration

Lecture 52 Scheduling Cache Evict

Lecture 53 Notes

Section 12: External API Integration

Lecture 54 Intro

Lecture 55 Coding

Lecture 56 Better Abstraction

Lecture 57 Error Handling

Section 13: Spring Security

Lecture 58 Intro

Lecture 59 Default Spring Security

Lecture 60 Basic Authorization Intro

Lecture 61 Security Filter Chain & Authenticated endpoints

Lecture 62 Cross Site Request Forgery

Lecture 63 Authorities with the Security Filter Chain

Lecture 64 Method Level Security

Lecture 65 User Detail Service in Database

Lecture 66 JWTs (JSON Web Tokens) Intro

Lecture 67 JWT Util

Lecture 68 Login endpoint

Lecture 69 Validate JWT

Lecture 70 Notes

Section 14: Dependency Injection

Lecture 71 Dependency Injection Explained

Section 15: The Actuator

Lecture 72 The Actuator

Section 16: Transactions

Lecture 73 Intro

Lecture 74 Coding

Lecture 75 Notes

Section 17: Miscellaneous Topics

Lecture 76 Intro

Lecture 77 Auto-generating tables & columns

Lecture 78 UUID / GUID

Lecture 79 Events

Lecture 80 Saving JSON to mySQL

Lecture 81 Versioning

Section 18: Final Exam

Lecture 82 Intro

Go from Java Developer to Backend Engineer using Spring Boot