17 Best Java Web Frameworks for Web Applications (2026)
Choosing the right Java web framework is one of the most important decisions when building a web application. Whether you need a full-stack MVC framework, a lightweight REST API framework, or a cloud-native microservices framework, Java has a rich ecosystem to cover every use case. This guide covers the most popular and trending Java frameworks for web application development in 2026. For data and reporting needs, also see our guides on Java persistence frameworks and Java reporting frameworks.
What is a Java web application framework?
A Java web application framework is a ready-made foundation for building websites and web APIs in Java. It handles the repetitive plumbing, such as receiving HTTP requests, routing URLs to your code, converting JSON, security, and talking to databases, so you only write the parts unique to your application.
Without a framework, you'd be parsing raw HTTP yourself. With one, a URL like /hello/Asha maps to a
single Java method in a few lines (see the same endpoint in five frameworks below). New to
Java? Start with what Java is and
interfaces, which these frameworks use heavily.
Which Java web framework should you use?
There's no single best framework, only the best fit for what you're building. Pick your situation:
What are you building?
A typical business web app or REST API
Choose Spring Boot.
- Largest ecosystem: security, data access, messaging, and cloud integrations are all ready-made
- Easiest to hire for and to find answers online
- Fast enough for the vast majority of applications
Microservices on Kubernetes or serverless
Choose Quarkus or Micronaut.
- Fast startup and low memory, especially as GraalVM native images
- Quarkus feels familiar if you know Jakarta EE; Micronaut if you know Spring
- Spring Boot also supports native images if your team already uses Spring
A small API, a prototype, or learning
Choose Javalin.
- A working server in a handful of lines
- Almost nothing hidden behind annotations, so you see how HTTP works
- Easy to move to a bigger framework later
A web UI written only in Java
Choose Vaadin.
- Build screens with Java components, with no HTML or JavaScript needed
- Great for internal, data-heavy business apps
- Integrates with Spring Boot
Standards-based enterprise (app servers)
Choose Jakarta EE (or Helidon MP / Quarkus for a lighter take).
- Vendor-neutral specifications with several compatible servers
- Common in large organisations with existing Java EE code
- The same annotations (e.g. Jakarta REST) also work in Quarkus
Very high concurrency, real-time
Consider Vert.x. Since Java 21, plain Spring Boot or Helidon with virtual threads is often enough too.
- Event-loop, non-blocking design for many thousands of connections
- Steeper learning curve than blocking code
- Virtual threads give many of the benefits while you keep writing simple blocking code
What is the best Java framework?
For most people the best Java framework is Spring Boot. It has the largest ecosystem, the most tutorials, and the most job openings. Pick Quarkus or Micronaut for fast-starting cloud services, Javalin for small APIs, and Vaadin if you want to build the screens in Java too.
"Java framework" can also mean a non-web library, such as one for databases or reports. For those, see Java persistence frameworks and the wider list of Java software frameworks.
Full-Stack MVC Java Web Frameworks
These frameworks provide a complete solution for building server-side rendered or REST-driven web applications with structured MVC patterns.
Spring Boot
Most PopularSpring Boot is the de facto standard web framework for Java. Built on top of the Spring Framework, it removes boilerplate configuration with auto-configuration and an embedded Tomcat/Jetty server, letting you build production-ready web applications in minutes.
- Auto-configuration and embedded server
- Spring MVC for REST APIs and web controllers
- Huge ecosystem: Spring Security, Spring Data, Spring Cloud
- Best for: REST APIs, microservices, enterprise web apps
Spring MVC (Spring Framework)
EnterpriseSpring MVC is the web layer of the broader Spring Framework — the most widely used Java application framework in the world. It supports inversion of control (IoC), dependency injection, and a rich model-view-controller architecture for both traditional web apps and REST APIs.
- Model-View-Controller pattern
- Powerful dependency injection container
- Supports both sync and reactive (WebFlux) programming
- Best for: large enterprise web applications
Grails
Rapid DevelopmentGrails is a powerful, full-stack web application framework for the JVM built on top of Spring Boot and Hibernate. It uses the Groovy programming language and follows convention over configuration to dramatically reduce boilerplate code in web applications.
- Convention over configuration
- Built-in ORM via GORM (Hibernate)
- Scaffolding for rapid prototyping
- Best for: rapid web application development on JVM
JHipster
Full-Stack GeneratorJHipster is a development platform that generates, develops, and deploys Spring Boot + Angular / React / Vue web applications and Spring microservices. It is one of the most popular open-source Java web application generators and scaffolding tools.
- Full-stack code generation (Spring Boot + modern frontend)
- Built-in JWT/OAuth2 security
- Microservices and Docker/Kubernetes support
- Best for: kickstarting full-stack projects quickly
Cloud-Native & Microservices Java Frameworks
These modern Java web frameworks are optimized for cloud deployments, fast startup times, and low memory footprints — ideal for microservices and containerized architectures.
Quarkus
Trending 2026Quarkus is a Kubernetes-native Java framework tailored for GraalVM and HotSpot. It dramatically reduces startup time and memory consumption, making Java a first-class citizen for serverless and container workloads. Developed by Red Hat, it is one of the fastest-growing Java web frameworks today.
- Sub-second startup with GraalVM native images
- Reactive and imperative programming models
- Dev Services for zero-config local development
- Best for: microservices, serverless, Kubernetes-native apps
Micronaut
Trending 2026Micronaut is a modern JVM-based framework designed for building modular, easily testable microservice and serverless applications. Unlike Spring, it performs dependency injection at compile time, resulting in near-instant startup and minimal memory usage.
- Compile-time dependency injection (no reflection)
- GraalVM native image support
- Built-in cloud configuration, service discovery, and tracing
- Best for: microservices, cloud functions, CLI tools
Helidon
OracleHelidon is Oracle's open-source Java framework for writing microservices. It comes in two flavours: Helidon SE (reactive, functional style) and Helidon MP (MicroProfile-compliant for enterprise Java developers).
- Two flavours: SE (reactive) and MP (MicroProfile)
- GraalVM native image support
- Built-in health checks, metrics, and tracing
- Best for: microservices, Oracle Cloud, MicroProfile apps
Eclipse Vert.x
ReactiveEclipse Vert.x is a polyglot, event-driven application framework that runs on the JVM. It is non-blocking and reactive by design, making it ideal for building high-concurrency web applications, real-time systems, and API gateways.
- Non-blocking, event loop architecture
- Polyglot (Java, Kotlin, Groovy, JS on JVM)
- Excellent throughput for high-concurrency apps
- Best for: real-time apps, API gateways, high-throughput services
Dropwizard
REST APIsDropwizard is a mature Java framework for developing ops-friendly, high-performance, RESTful web services. It bundles together Jetty, Jersey, Jackson, and Metrics into a single cohesive framework, making it easy to build and deploy REST APIs quickly.
- Embedded Jetty server with Jersey for JAX-RS REST APIs
- Built-in metrics, health checks, and logging
- Minimal configuration, production-ready out of the box
- Best for: RESTful web services, ops-focused teams
Lightweight & Micro Java Web Frameworks
These minimalist frameworks are perfect when you need a fast, simple HTTP server or REST API without the overhead of a full enterprise framework.
Javalin
Trending 2026Javalin is a simple and lightweight web framework for Java and Kotlin. Built on top of Jetty, it offers a clean, expressive API for building REST APIs and web applications with minimal boilerplate. It is especially popular for building microservices and learning web development in Java.
- Simple, intuitive API inspired by Express.js
- First-class Kotlin support
- WebSocket and Server-Sent Events support
- Best for: REST APIs, microservices, learning Java web development
Spark Framework
MicroSpark is a micro framework for creating web applications in Java and Kotlin with minimal effort. Inspired by Ruby's Sinatra, it provides a simple DSL for defining routes. Releases have been rare since 2022, so for new projects most developers pick Javalin, which started as a fork of Spark and is actively maintained.
- Sinatra-inspired routing DSL
- Embedded Jetty server
- Very low learning curve
- Best for: maintaining existing Spark apps; choose Javalin for new ones
Jersey (JAX-RS)
JAX-RSJersey is the reference implementation of the JAX-RS (Jakarta RESTful Web Services) specification. It provides tools and APIs for building RESTful web services in Java, and is widely used in enterprise applications that follow Jakarta EE standards.
- JAX-RS reference implementation
- Annotation-driven REST endpoint definition
- Pluggable dependency injection support
- Best for: JAX-RS REST APIs, Jakarta EE environments
Enterprise & Legacy Java Web Frameworks
These frameworks have been widely used in enterprise Java development for many years. While some are less trendy in new projects, they power millions of existing web applications.
Apache Struts
LegacyApache Struts is a free, open-source MVC framework for developing Java EE web applications. It supports convention over configuration and can be extended via plugins. It is one of the earliest Java web frameworks and still powers many legacy enterprise applications.
- MVC-based Java EE web framework
- Convention over configuration with plugin support
- Large legacy user base in financial/government sectors
- Best for: maintaining existing Struts-based applications
JSF (JavaServer Faces)
LegacyJSF is a Java specification and MVC web application framework for building component-based web UIs. It is part of the Jakarta EE platform and is widely used in enterprise Java environments, though it has largely been superseded by modern frameworks for new projects.
- Component-based UI model
- Part of Jakarta EE specification
- Rich component libraries such as PrimeFaces
- Best for: Jakarta EE applications and existing JSF codebases
Vaadin
UI-FocusedVaadin is a Java framework for building modern web UIs entirely in Java — without writing HTML or JavaScript. It includes a rich set of web components and developer tools, and is popular in enterprise applications where developers prefer to stay in the Java stack.
- Build web UIs fully in Java
- Rich component library (Grid, Form, Charts)
- Built-in server-client communication
- Best for: data-heavy enterprise UIs, Java-only teams
Google Web Toolkit (GWT)
LegacyGoogle Web Toolkit (GWT) is an open-source set of tools that allows Java developers to create and maintain complex JavaScript frontend applications in Java. The compiler translates Java code to optimized JavaScript, which runs in the browser.
- Write frontend code in Java, compile to JavaScript
- Cross-browser compatible code generation
- Google's newer successor for Java-to-JavaScript is J2CL
- Best for: legacy GWT apps, Java-only teams building complex UIs
Play Framework
ReactivePlay Framework is an open-source, reactive web application framework for Java and Scala. It follows the MVC architectural pattern and is built for highly concurrent, non-blocking web applications. Play 3.0 runs on Apache Pekko (the open-source fork of Akka), while Play 2.9 still uses Akka.
- Reactive, non-blocking architecture (Pekko in Play 3.x)
- Supports both Java and Scala
- Hot-reload in development mode
- Best for: reactive web apps, Scala/Java hybrid teams
The same endpoint in 5 Java web frameworks
Descriptions only go so far. Here's the same tiny API in five frameworks: GET /hello/Asha
returns Hello, Asha. Switch between them to see how each one feels:
GET /hello/{name} in each framework
Spring Boot
Annotation-driven controller. Spring Boot also needs a small @SpringBootApplication main class.
@RestController
public class HelloController {
@GetMapping("/hello/{name}")
public String hello(@PathVariable String name) {
return "Hello, " + name;
}
}Quarkus
Uses the standard Jakarta REST annotations, so this is almost identical to Jakarta EE. No main class needed.
@Path("/hello")
public class HelloResource {
@GET
@Path("/{name}")
@Produces(MediaType.TEXT_PLAIN)
public String hello(@PathParam("name") String name) {
return "Hello, " + name;
}
}Micronaut
Looks like Spring, but the wiring is generated at compile time, which is why it starts so quickly.
@Controller("/hello")
public class HelloController {
@Get("/{name}")
@Produces(MediaType.TEXT_PLAIN)
public String hello(String name) {
return "Hello, " + name;
}
}Javalin
No annotations at all. Routes are plain method calls with a lambda. This is the whole program (Javalin 6).
import io.javalin.Javalin;
public class App {
public static void main(String[] args) {
Javalin app = Javalin.create().start(7070);
app.get("/hello/{name}", ctx -> ctx.result("Hello, " + ctx.pathParam("name")));
}
}Jakarta EE
Standard Jakarta REST. Deploy it to any compatible server (e.g. Payara, WildFly, Open Liberty) alongside an @ApplicationPath class.
@Path("/hello")
public class HelloResource {
@GET
@Path("{name}")
@Produces(MediaType.TEXT_PLAIN)
public String hello(@PathParam("name") String name) {
return "Hello, " + name;
}
}The differences that matter more in practice are startup time, memory use, ecosystem size, and how much "magic" happens behind the annotations. That's what the comparison table below summarises.
Java frontend frameworks: building the UI
Java is mainly a backend language, so there is no single "Java frontend framework" that browsers run directly. Java teams build the browser side in one of three ways: a JavaScript frontend talking to a Java API, a UI written in Java with Vaadin or JSF, or server-rendered HTML templates such as Thymeleaf.
Most frameworks above build the backend. The table shows the three routes for the part users see in the browser. For a deeper look, read our guide to Java frontend frameworks. Not sure which backend framework fits your project? Our step-by-step guide on how to choose a Java web framework walks you through it.
| Approach | Examples | Good for |
|---|---|---|
| JavaScript frontend + Java REST API | React, Angular, or Vue calling Spring Boot / Quarkus | Most modern public-facing web apps |
| UI written in Java | Vaadin (Flow), JSF with PrimeFaces, GWT (legacy) | Internal business tools, Java-only teams |
| Server-rendered HTML templates | Thymeleaf with Spring MVC, Qute with Quarkus | Content sites, admin pages, simple apps |
Vaadin also offers Hilla, now part of the Vaadin platform, which pairs a React frontend with a Spring Boot backend and generates type-safe TypeScript for calling your Java code.
Java Web Frameworks — Quick Comparison
Use this table to quickly compare the most popular Java frameworks for web applications by their key characteristics.
| Framework | Type | Startup Speed | Learning Curve | Best For |
|---|---|---|---|---|
| Spring Boot | Full-Stack / REST | Medium | Medium | Enterprise apps, REST APIs |
| Quarkus | Cloud-Native | Very Fast | Medium | Microservices, Kubernetes, Serverless |
| Micronaut | Cloud-Native | Very Fast | Medium | Microservices, Cloud Functions |
| Javalin | Lightweight | Fast | Low | REST APIs, Learning projects |
| Helidon | Cloud-Native | Fast | Medium | Microservices, Oracle Cloud |
| Vert.x | Reactive | Fast | High | High-concurrency, Real-time |
| Dropwizard | REST APIs | Medium | Low | REST services, Ops-focused teams |
| Spring MVC | Full-Stack MVC | Medium | High | Large enterprise web apps |
| Play Framework | Reactive MVC | Medium | Medium | Reactive apps, Scala/Java teams |
| Spark Framework | Micro | Fast | Very Low | Small APIs, Prototypes |
| Apache Struts | MVC (Legacy) | Slow | High | Legacy enterprise systems |
| Grails | Full-Stack | Medium | Low | Rapid JVM web development |