7- Packaging Structure of our first Project

Spring Starter Project in STS 

Name-      spring-boot-first-app

Type-         Maven

Packaging- Jar

Artifact Id- spring-boot-first-app

Description -First Application created using spring boot

Dependencies-  Spring Web

Image 1 -    Packaging Structure of App in this Image

_______________________________________________________

  YELLOW IS for Java Project 

  BLUE IS for   Folder

  GREEN IS for Package

  RED IS for Class 

Pink is for  pom.xml

_________________________________________

spring-boot-first-app

      --> src/main/java

                 com.example.demo

                           HelloWorldController.java

                          SpringBootFirstApplication.java

                           Student.java

                           StudentCotroller.java

         -->   src/main/resources

                             static

                             templates

                             application.properties

           -->   src/test/java

           -->  JRE System Library

           -->  MavenDependencies

           -->  src

           --> target

        

           --> mvnw

           --> mvnw.cmd

        --> pom.xml

----------------------------------------------------------

     spring-boot-first-app  --> pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.6.3</version>

        <relativePath/> <!-- lookup parent from repository -->

    </parent>

    <groupId>com.springboot.app</groupId>

    <artifactId>spring-boot-first-app</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <name>spring-boot-first-app</name>

    <description>First Application created using spring boot</description>

    <properties>

        <java.version>11</java.version>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

       

       

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

       

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

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Explaining Each component of project structure

src/main/java

This is the main method to launch project...

Java source code for the artifact.

The main folder contains your application code and resources.

src/main/resources

Resources used in the project.

Static resources like css,js,images inside static folder  

jsp or html files under templates folder

Configuring all application level configuration in application.properties

pom.xml

 It is an XML file that contains information about the project and configuration details used by Maven to build the project.

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JRE System Library

Basically the  library of project(managed by IDE)

src/test/java

 The test folder contains  test code and resources.

Places your test use case code, like junit test.

 These codes would be executed when doing maven package things. These codes won't be packaged to your war or jar file.

src  

The src directory contains all of the source material for building the project, its site and so on. 

It contains a subdirectory for each type: main for the main build artifact, test for the unit test code and resources, site and so on.

 target 

 The target directory is used to house all output of the build.

mvnw 

The mvnw file is for Linux (bash) environment

mvnw.cmd

  The mvnw.cmd is for the Windows environment.