Java and spring boot logo with a plus sign followed by eclipse logo

Intro

To those who develop in coffee present, it's virtually impossible to miss Spring framework and more specifically Leap Kick. Using this development stack, we gain more productivity and agility from small to large sized java projects. In this guide I'll demonstrate how to install, configure eclipse and create a simple Hullo-World using java, eclipse and spring boot.

The github repository of the example projection of this mail, can exist found at: https://github.com/danielpadua/java-bound-eclipse-example

Requirements

  • Java JDK eight or higher

Installing Eclipse

It's also worth to mention that installing Bound Tool Suite (STS) instead of pure eclipse, is highly valid. STS is basically eclipse configured with spring tools plugin, optimized for leap framework evolution

Utilise the following sections based in which operational system you'll be using:

Windows

In Windows we accept two options:

  • Directly download

    Get to eclipse download folio, select the latest version (on the writing date of this guide is the 4.x and install it using NNF (next, adjacent and finish).

  • Using a packet managing director (Chocolatey)

    If you lot don't know Chocolatey, take a look at this post.

    Open up powershell and install eclipse using the following command line:

Linux

In Linux we also have 2 options:

  • Direct download

    Go to eclipse download page, select the latest version (on the writing date of this guide is the 4.x, extract the .tar.gz file and execute the eclipse file.

  • Using a package manager

    Depending in which Linux distro you are using, you'll use a different packet manager. For instance, debian based distros, like the popular ubuntu, use apt-get. For Red Hat (or RHEL) based distros use yum or dnf. Search the best mode to install eclipse using your packet director.

macOS

In macOS we have 2 options over again:

  • Direct download

    Go to eclipse download page, select the latest version (on the writing appointment of this guide is the four.10 and install it every bit usual, dragging the app from the .dmg file to the apps binder of your mac.

  • Using a package managing director (Homebrew)

    If you don't know Homebrew, take a look at this post

    Open your favorite concluding and install eclipse using the following command line:

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    mash cask                            install                            eclipse-ide

Configuring eclipse

With eclipse installed, I suggest you to open it and start getting used with the GUI and also the shortcut keys.

If y'all installed Leap Tool Suite, it's not necessary to follow the installation of Spring Tools beneath

Leap Tools

In order to have a better evolution feel with Spring, I recommend you to install the eclipse plugin: Bound Tools. Go to menu Help > Eclipse Market… and search for spring:

Installing Spring Tools Installing Spring Tools

Install the latest version of Spring Tools (on the writing date of this guide information technology is the 4.2.1) and restart eclipse.

Creating the project

With everything correctly configured, it's time to create our projection. Go to carte du jour: File > New > Projection… and select the option Bound starter Project which is located below Spring Boot card, equally the post-obit paradigm:

Starting the project Starting the project

For this example, I'll exist using Maven as build-tool.

Fill the fields with the name of your antiquity and groupId, and select the Type field as Maven:

Starting the project using Maven Starting the projection using Maven

After clicking next, we'll have to especify which version of Spring we will exist using. Select the latest stable version (on the writing engagement of this guide it'southward the ii.1.4). As dependency, only select the Web and click Stop.

Select Spring version and dependencies Select Spring version and dependencies

Project created, at present information technology's time to create a Controller with a endpoint that will return a fixed String with the value: "Hullo-Earth". Right click the main package and select New > Class:

Creating a class Creating a class

And create a form named "ExampleController" and fill the suffix of the package with ".controllers", then a package named controllers will be created and nest your class, and it will group other controllers:

Creating ExampleController Creating ExampleController

Use the code below to create the endpoint that volition return "Hello-World!":

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                        bundle                        br.com.danielpadua.java_spring_eclipse_example.controllers                        ;                        import                        org.springframework.http.ResponseEntity                        ;                        import                        org.springframework.web.bind.annotation.GetMapping                        ;                        import                        org.springframework.web.demark.annotation.RequestMapping                        ;                        import                        org.springframework.web.bind.annotation.RestController                        ;                        /**  * ExampleController  *  * @author danielpadua  *  */                        @RestController                        @RequestMapping                        (                        "/api/example"                        )                        public                        class                        ExampleController                        {                        @GetMapping                        (                        "/hullo-globe"                        )                        public                        ResponseEntity                        <                        String                        >                        become                        ()                        {                        return                        ResponseEntity                        .                        ok                        (                        "Hello World!"                        );                        }                        }

Run the project by clicking the push button Boot Dashboard then the tab Boot Dashboard at the lesser of the screen. Select the name of your project and click the run button:

Running the project Running the project

Afterwards clicking run button, you will meet the output log of jump initialisation in panel tab:

Spring initialisation log Leap initialization log

To test the project, you but have to open your favorite browser and admission: http://localhost:8080/api/example/hello-globe and you lot should exist seeing the Hi Globe message:

Voilà Voilà

Determination

Eclipse and Spring Tool Suite (STS) are greate IDEs for developing robust coffee and bound based applications, and due to the stability of the tool, it ends up being super easy the 'first' of a elementary projection.

See you lot presently!