Information Density: Spring – Signal Evidence & AI Readability

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[H1] Spring makes Javasimple.modern.productive.reactive.cloud-ready.
Why SpringQuickstart
[H1] What Spring can do
[IMG: Generative AI]
[H2] Generative AI
Integrate AI into your Spring applications without reinventing the wheel.
[IMG: Microservices]
[H2] Microservices
Quickly deliver production‑grade features with independently evolvable microservices.
[IMG: Reactive]
[H2] Reactive
Spring's asynchronous, nonblocking architecture means you can get more from your computing resources.
[IMG: Cloud]
[H2] Cloud
Your code, any cloud—we’ve got you covered. Connect and scale your services, whatever your platform.
[IMG: Web apps]
[H2] Web apps
Frameworks for fast, secure, and responsive web applications connected to any data store.
[IMG: Serverless]
[H2] Serverless
The ultimate flexibility. Scale up on demand and scale to zero when there’s no demand.
[IMG: Event Driven]
[H2] Event Driven
Integrate with your enterprise. React to business events. Act on your streaming data in realtime.
[IMG: Batch]
[H2] Batch
Automated tasks. Offline processing of data at a time to suit you.@SpringBootApplication@RestControllerpublic class DemoApplication {@GetMapping("/helloworld")public String hello() {return"Hello World!";}}
[H2] Level up your Java™ code
With Spring Boot in your app, just a few lines of code is all you need to start building services like a boss.
New to Spring? Try our simple quickstart guide.
[IMG: Quote]
Most [of our] services today are all based on Spring Boot. I think the most important thing is that [Spring] has just been very well maintained over the years...that is important for us for the long term because we don’t want to be switching to a new framework every two years.
[IMG: Paul Bakker, Senior Software Engineer, Netflix]
Paul Bakker, Senior Software Engineer, NetflixWatch now
[H2] Get ahead
VMware offers training and certification to turbo-charge your progress.Learn more
[H2] Get support
Tanzu Spring offers support and binaries for OpenJDK™, Spring, and Apache Tomcat® in one simple subscription.Learn more
[H2] Upcoming events
Check out all the upcoming events in the Spring community.View all

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[H1] Spring Quickstart Guide

[H4] What you'll build
You will build a classic “Hello World!” endpoint which any browser
can connect to. You can even tell it your name, and it will respond
in a more friendly way.

[H4] What you’ll need

An Integrated Developer Environment (IDE)
Popular choices include IntelliJ IDEA,
Visual Studio Code with
Spring Boot Extension Pack, or
Eclipse with Spring Tools,
and many more.

A Java™ Development Kit (JDK)
We recommend BellSoft Liberica JDK version 17 or 21.

[H2] Step 1: Start a new Spring Boot project
Use start.spring.io to create a “web” project. In the “Dependencies” dialog search for and add the “web” dependency as shown in the screenshot. Hit the “Generate” button, download the zip, and unpack it into a folder on your computer.

[IMG: Quick Start On Start.spring.io]
[IMG: Quick Start On Start.spring.io]

Projects created by start.spring.io contain Spring Boot , a framework that makes Spring ready to work inside your app, but without much code or configuration required. Spring Boot is the quickest and most popular way to start Spring projects.
[H2] Step 2: Add your code
Open up the project in your IDE and locate the DemoApplication.java file in the src/main/java/com/example/demo folder. Now change the contents of the file by adding the extra method and annotations shown in the code below. You can copy and paste the code or just type it.
package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@RestController
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
@GetMapping("/hello")
public String hello(@RequestParam(value = "name", defaultValue = "World") String name) {
return String.format("Hello %s!", name);
}
}
This is all the code required to create a simple “Hello World” web service in Spring Boot.
The hello() method we’ve added is designed to take a String parameter called name, and then combine this parameter with the word "Hello" in the code. This means that if you set your name to "Amy" in the request, the response would be “Hello Amy”.
The @RestController annotation tells Spring that this code describes an endpoint that should be made available over the web. The @GetMapping(“/hello”) tells Spring to use our hello() method to answer requests that get sent to the http://localhost:8080/hello address. Finally, the @RequestParam is telling Spring to expect a name value in the request, but if it’s not there, it will use the word "World" by default.
[H2] Step 3: Try it
Let’s build and run the program. Open a command line (or terminal) and navigate to the folder where you have the project files. We can build and run the application by issuing the following command:
MacOS/Linux:
./gradlew bootRun
Windows:
.\gradlew.bat bootRun
You should see some output that looks very similar to this:
[IMG: Quick Start On Start.spring.io]
The last couple of lines here tell us that Spring has started. Spring Boot’s embedded Apache Tomcat server is acting as a webserver and is listening for requests on localhost port 8080. Open your browser and in the address bar at the top enter http://localhost:8080/hello. You should get a nice friendly response like this:
[IMG: Quick Start On Start.spring.io]
[H2] Pop quiz
What should happen if you add ?name=Amy to the end of the URL?
[H2] Next, try these popular guides
You've already seen how simple Spring can be, but it's also very flexible. There are thousands of things you can do with Spring, and we have lots of guides available to take you through the most popular choices. Why not keep on learning and try one of these additional guides?
[H2] Building a RESTful Web Service
Learn how to create a RESTful web service with Spring.
[H2] Consuming a RESTful Web Service
Learn how to retrieve web page data with Spring's RestTemplate.
[H2] Accessing Data with JPA
Learn how to work with JPA data persistence using Spring Data JPA.
[H2] Get ahead
VMware offers training and certification to turbo-charge your progress.Learn more
[H2] Get support
Tanzu Spring offers support and binaries for OpenJDK™, Spring, and Apache Tomcat® in one simple subscription.Learn more
[H2] Upcoming events
Check out all the upcoming events in the Spring community.View all

Skip to main contentLearn more about Day 0 access to security patches via Enterprise support.
[H1] Projects
From configuration to security, web apps to big data—whatever the infrastructure needs of your application may be, there is a Spring Project to help you build it. Start small and use just what you need—Spring is modular by design.
Release Calendar
Version Mappings
[IMG: Spring Boot]
[H1] Spring Boot
Takes an opinionated view of building Spring applications and gets you up and running as quickly as possible.4.0.6+ 5 versions
[IMG: Spring Framework]
[H1] Spring Framework
Provides core support for dependency injection, transaction management, web apps, data access, messaging, and more.7.0.7+ 7 versions
[IMG: Spring Data]
[H1] Spring Data
Provides a consistent approach to data access – relational, non-relational, map-reduce, and beyond.2025.1.0+ 6 versions
[IMG: Spring Cloud]
[H1] Spring Cloud
Provides a set of tools for common patterns in distributed systems. Useful for building and deploying microservices.2025.1.1+ 9 versions
[IMG: Spring Cloud Data Flow]
[H1] Spring Cloud Data Flow
Provides an orchestration service for composable data microservice applications on modern runtimes.2.11.5+ 7 versions
[IMG: Spring gRPC]
[H1] Spring gRPC
Provides a Spring-friendly API and abstractions for developing gRPC applications.1.0.3+ 2 versions
[IMG: Spring Security]
[H1] Spring Security
Protects your application with comprehensive and extensible authentication and authorization support.7.0.5+ 7 versions
[IMG: Spring Authorization Server]
[H1] Spring Authorization Server
Provides a secure, light-weight, and customizable foundation for building OpenID Connect 1.0 Identity Providers and OAuth2 Authorization Server products.1.5.7+ 1 version
[IMG: Spring for GraphQL]
[H1] Spring for GraphQL
Spring for GraphQL provides support for Spring applications built on GraphQL Java.2.0.3+ 7 versions
[IMG: Spring Session]
[H1] Spring Session
Provides an API and implementations for managing a user’s session information.4.0.3+ 10 versions
[IMG: Spring Integration]
[H1] Spring Integration
Supports the well-known Enterprise Integration Patterns through lightweight messaging and declarative adapters.7.0.4+ 11 versions
[IMG: Spring HATEOAS]
[H1] Spring HATEOAS
Simplifies creating REST representations that follow the HATEOAS principle.3.0.2+ 6 versions
[IMG: Spring Modulith]
[H1] Spring Modulith
Spring Modulith allows developers to build well-structured Spring Boot applications and guides developers in finding and working with application modules driven by the domain.2.0.6+ 6 versions
[IMG: Spring REST Docs]
[H1] Spring REST Docs
Lets you document RESTful services by combining hand-written documentation with auto-generated snippets produced with Spring MVC Test or REST Assured.4.0.0+ 3 versions
[IMG: Spring AI]
[H1] Spring AI
Spring AI is an application framework for AI engineering. At its core, Spring AI addresses the fundamental challenge of AI integration: Connecting your enterprise Data and APIs with the AI Models.1.1.7+ 4 versions
[IMG: Spring Batch]
[H1] Spring Batch
Simplifies and optimizes the work of processing high-volume batch operations.6.0.3+ 1 version
[IMG: Spring AMQP]
[H1] Spring AMQP
Applies core Spring concepts to the development of AMQP-based messaging solutions.4.0.3+ 8 versions
[IMG: Spring for Apache Kafka]
[H1] Spring for Apache Kafka
Provides Familiar Spring Abstractions for Apache Kafka.4.0.5+ 10 versions
[IMG: Spring LDAP]
[H1] Spring LDAP
Simplifies the development of applications that use LDAP by using Spring's familiar template-based approach.4.0.3+ 9 versions
[IMG: Spring for Apache Pulsar]
[H1] Spring for Apache Pulsar
Provides Familiar Spring Abstractions for Apache Pulsar2.0.5+ 3 versions
[IMG: Spring Shell]
[H1] Spring Shell
Makes writing and testing RESTful applications easier with CLI-based resource discovery and interaction.4.0.2+ 3 versions
[IMG: Spring Statemachine]
[H1] Spring Statemachine
Provides a framework for application developers to use state machine concepts with Spring applications.4.0.1+ 2 versions
[IMG: Spring Web Flow]
[H1] Spring Web Flow
Supports building web applications that feature controlled navigation, such as checking in for a flight or applying for a loan.4.0.0+ 5 versions
[IMG: Spring Web Services]
[H1] Spring Web Services
Facilitates the development of contract-first SOAP web services.5.0.1+ 6 versions
[H2] Projects in the Attic
Spring CLISpring Cloud - Cloud Foundry Service BrokerSpring Cloud CLISpring Cloud ConnectorsSpring Cloud for Cloud FoundrySpring Cloud PipelinesSpring Cloud SecuritySpring Cloud SkipperSpring Cloud Stream Kafka BinderSpring Cloud Stream Rabbit BinderSpring Data for Apache GeodeSpring Data for Apache SolrSpring Data for VMware GemFireSpring Data JDBC ExtensionsSpring FlexSpring for AndroidSpring for Apache HadoopSpring Integration Groovy DSLSpring Integration Scala DSLSpring IO PlatformSpring MobileSpring RooSpring ScalaSpring Security OAuthSpring Security SAMLSpring SocialSpring Social FacebookSpring Social GitHubSpring Social LinkedInSpring Social TripItSpring Social TwitterSpring XD
[H2] Release Calendar
iCal
[H2] Get ahead
VMware offers training and certification to turbo-charge your progress.Learn more
[H2] Get support
Tanzu Spring offers support and binaries for OpenJDK™, Spring, and Apache Tomcat® in one simple subscription.Learn more
[H2] Upcoming events
Check out all the upcoming events in the Spring community.View all

Skip to main contentLearn more about Day 0 access to security patches via Enterprise support.
[H1] Why Spring?
Spring makes programming Java quicker, easier, and safer for everybody. Spring’s
focus on speed, simplicity, and productivity has made it the
world's most popular
Java framework.“We use a lot of the tools that come with the Spring framework and reap the benefits of having a lot of the out of the box solutions, and not having to worry about writing a ton of additional code—so that really saves us some time and energy.”SEAN GRAHAM, APPLICATION TRANSFORMATION LEAD, DICK’S SPORTING GOODSWatch now
[H1] Spring is everywhere
Spring’s flexible libraries are trusted by developers all over the world. Spring delivers delightful experiences to millions of end-users every day—whether that’s streaming TV, online shopping, or countless other innovative solutions. Spring also has contributions from all the big names in tech, including Alibaba, Amazon, Google, Microsoft, and more.
[H1] Spring is flexible
Spring’s flexible and comprehensive set of extensions and third-party libraries let developers build almost any application imaginable. At its core, Spring Framework’s Inversion of Control (IoC) and Dependency Injection (DI) features provide the foundation for a wide-ranging set of features and functionality. Whether you’re building secure, reactive, cloud-based microservices for the web, or complex streaming data flows for the enterprise, Spring has the tools to help.
[H1] Spring is productive
Spring Boot transforms how you approach Java programming tasks, radically streamlining your experience. Spring Boot combines necessities such as an application context and an auto-configured, embedded web server to make microservice development a cinch. To go even faster, you can combine Spring Boot with Spring Cloud’s rich set of supporting libraries, servers, patterns, and templates, to safely deploy entire microservices-based architectures into the cloud, in record time.
[H1] Spring is fast
Our engineers care deeply about performance. With Spring, you’ll notice fast startup, fast shutdown, and optimized execution, by default. Increasingly, Spring projects also support the reactive (nonblocking) programming model for even greater efficiency. Developer productivity is Spring’s superpower. Spring Boot helps developers build applications with ease and with far less toil than other competing paradigms. Embedded web servers, auto-configuration, and “fat jars” help you get started quickly, and innovations like LiveReload in Spring DevTools mean developers can iterate faster than ever before. You can even start a new Spring project in seconds, with the Spring Initializr at start.spring.io.
[H1] Spring is secure
Spring has a proven track record of dealing with security issues quickly and responsibly. The Spring committers work with security professionals to patch and test any reported vulnerabilities. Third-party dependencies are also monitored closely, and regular updates are issued to help keep your data and applications as safe as possible. In addition, Spring Security makes it easier for you to integrate with industry-standard security schemes and deliver trustworthy solutions that are secure by default.
[H1] Spring is supportive
The Spring community is enormous, global, diverse, and spans folks of all ages and capabilities, from complete beginners to seasoned pros. No matter where you are on your journey, you can find the support and resources you need to get you to the next level: quickstarts, videos, meetups, support, or even formal training and certification.
[H1] What Spring can do?
[IMG: Generative AI]
[H2] Generative AI
Integrate AI into your Spring applications without reinventing the wheel.
[IMG: Microservices]
[H2] Microservices
Quickly deliver production‑grade features with independently evolvable microservices.
[IMG: Reactive]
[H2] Reactive
Spring's asynchronous, nonblocking architecture means you can get more from your computing resources.
[IMG: Cloud]
[H2] Cloud
Your code, any cloud—we’ve got you covered. Connect and scale your services, whatever your platform.
[IMG: Web apps]
[H2] Web apps
Frameworks for fast, secure, and responsive web applications connected to any data store.
[IMG: Serverless]
[H2] Serverless
The ultimate flexibility. Scale up on demand and scale to zero when there’s no demand.
[IMG: Event Driven]
[H2] Event Driven
Integrate with your enterprise. React to business events. Act on your streaming data in realtime.
[IMG: Batch]
[H2] Batch
Automated tasks. Offline processing of data at a time to suit you.
[H2] Get ahead
VMware offers training and certification to turbo-charge your progress.Learn more
[H2] Get support
Tanzu Spring offers support and binaries for OpenJDK™, Spring, and Apache Tomcat® in one simple subscription.Learn more
[H2] Upcoming events
Check out all the upcoming events in the Spring community.View all