Introduction In this chapter, we will explore Spring Boot Embedded Servers, which are integral to creating stand-alone, production-grade Spring applications. Embedded servers allow you to run your Spring Boot applications without the need for an external server setup, simplifying the deployment and development processes. What are Spring Boot Embedded Servers? Spring Boot Embedded Servers are …
Introduction In this chapter, we will explore the Spring Boot Parent Starter, a crucial component in managing dependencies and configurations in Spring Boot projects. The Parent Starter simplifies dependency management by providing a common base configuration that ensures consistency across Spring Boot applications. What is the Spring Boot Parent Starter? The Spring Boot Parent Starter …
Introduction In this chapter, we will explore Spring Boot Starters. Starters are a set of convenient dependency descriptors provided by Spring Boot that you can include in your project to get a predefined set of libraries and configurations. They simplify dependency management and make it easier to get started with Spring Boot. What are Spring …
Introduction In this chapter, we are going to build our first simple “Hello World” REST API using Spring Boot. We are going to use: Java 21 Spring Boot 3.2 Maven IntelliJ IDEA Browser Creating a New Spring Boot Project Using Spring Initializr Open Spring Initializr: Navigate to Spring Initializr in your web browser. Configure Project …
Introduction In this chapter, we will explain Spring Boot Auto-Configuration in simple words. Auto-Configuration is one of the most powerful and convenient features of Spring Boot, enabling developers to get started with minimal setup and configuration. What is Spring Boot Auto-Configuration? Spring Boot Auto-Configuration is a mechanism that automatically configures your Spring application based on …
Introduction In this chapter, we will guide you through the process of creating and setting up your first Spring Boot application using IntelliJ IDEA and Spring Initializr. IntelliJ IDEA is a powerful and popular Integrated Development Environment (IDE) that offers comprehensive support for Spring Boot, making it easier for developers to build and manage their …
Create and Setup Your First Spring Boot App in IntelliJ IDEA (using Spring Initializr) Read More »
Introduction In this chapter, we will explore the various methods to create Spring Boot projects. Each method has its advantages and is suited to different development workflows and preferences. 1. Using Spring Initializr What is Spring Initializr? Spring Initializr is a web-based tool that simplifies the process of bootstrapping a new Spring Boot project. It …
Introduction In this chapter, we will guide you through the process of setting up your development environment for Spring Boot. Required Tools To get started with Spring Boot, you need to have the following tools installed on your system: Java Development Kit (JDK) Integrated Development Environment (IDE) Build Tool (Maven or Gradle) Spring Boot CLI …
Introduction Spring provides a comprehensive programming and configuration model for modern Java-based enterprise applications; Spring Boot builds on top of Spring to simplify the development process by reducing the need for boilerplate code and configuration. This chapter will explore the key differences between Spring and Spring Boot, helping you understand when and why to use …
Introduction Spring Boot is designed to simplify the development of Spring applications by providing various features that reduce the need for boilerplate code and configuration. In this chapter, we will explore the key features of Spring Boot, each explained in detail to understand how they contribute to making Spring application development easier and faster. Key …
Introduction The Spring Framework is a powerful framework for building enterprise Java applications, but it can be complex and challenging to work with. Common issues include the need for extensive configuration, managing dependencies, deployment complexities, and handling boilerplate code. Spring Boot was created to solve these problems, making it easier for developers to build, run, …
Introduction In this chapter, we will explore what Spring Boot is, its key features, and why it has become a popular choice for building Java applications. We will delve into how Spring Boot simplifies the development process by handling most of the boilerplate configuration for you, allowing you to focus on writing business logic. Let’s …
The double keyword in Java is used to declare a variable of type double, which is a double-precision 64-bit IEEE 754 floating point. The double data type is used to store decimal numbers and is more precise than the float data type. Table of Contents Introduction double Keyword Syntax Understanding double Examples Declaring Double Variables …
The float keyword in Java is used to declare a variable of type float, which is a single-precision 32-bit IEEE 754 floating point. The float data type is used to store decimal numbers, and it is particularly useful when you need to save memory in large arrays of floating point numbers. Table of Contents Introduction …
The permits keyword in Java is used in conjunction with the sealed keyword to specify the classes that are allowed to extend or implement a sealed class or interface. This feature, introduced in Java 17, enables a more controlled and restricted inheritance hierarchy, ensuring that only specified classes or interfaces can be subclasses or implementors …
The extends keyword in Java is used to indicate that a class is inheriting from another class. It establishes an inheritance relationship where a subclass (child class) inherits fields and methods from a superclass (parent class). This mechanism allows for code reuse, method overriding, and polymorphism.
The instanceof keyword in Java is used to test whether an object is an instance of a specific class or interface. It is a binary operator that returns a boolean value: true if the object is an instance of the specified type, and false otherwise.
The record keyword in Java is used to define a special kind of class called a record. Records provide a concise syntax for declaring immutable data carriers with automatically generated methods such as equals(), hashCode(), and toString(), as well as accessor methods for their fields. Records were introduced in Java 14 as a preview feature …
The native keyword in Java is used to declare a method that is implemented in platform-specific code, typically using languages like C or C++. These methods are part of the Java Native Interface (JNI), which allows Java code running in the Java Virtual Machine (JVM) to call and be called by native applications and libraries …
The import keyword in Java is used to bring classes, interfaces, or entire packages into the current file so that their members can be accessed without needing to fully qualify their names. This makes the code more readable and easier to maintain by reducing redundancy.
The strictfp keyword in Java is used to restrict floating-point calculations to ensure consistent and platform-independent results. When a class, method, or interface is declared with strictfp, all floating-point computations within its scope are performed using strict floating-point rules, which adhere to the IEEE 754 standard for floating-point arithmetic.
The transient keyword in Java is used to indicate that a field should not be serialized when the object containing it is serialized. Serialization is the process of converting an object into a byte stream, typically for storage or transmission. When an object is deserialized, transient fields are not restored to their original values, as …
The return keyword in Java is used to exit from a method and optionally pass a value back to the caller. It plays a crucial role in determining the flow of execution and in providing outputs from methods.
The void keyword in Java is used to specify that a method does not return any value. It is a return type that indicates the method performs an action but does not produce a result that can be used or returned to the caller.
The non-sealed keyword in Java is used to declare that a class or interface that extends or implements a sealed class or interface is open to further subclassing. This feature, introduced in Java 17, allows for flexibility in extending a class hierarchy that would otherwise be restricted by the sealed keyword.