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FIG 01 · Java Development

Java development services on a supported LTS

New Spring Boot apps and APIs on Java 25 and 21, upgrades from Java 8, 11 and 17, Spring Boot 3 to 4 moves, and deployment on AWS, Azure or Google Cloud, with the code in your repository from day one.

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Software engineer coding on a laptop in a glass-walled office with server cabinets behind him

FIG 02 · Quick answer

What are Java development services?

Java development services cover building, modernising and supporting back-end systems, APIs and web apps in Java. Elgrith builds on Java 25 and 21 LTS with Spring Boot, upgrades Java 8, 11 and 17 apps whose Oracle Premier Support has ended, moves Spring Boot 3 apps to 4, and deploys them on AWS, Azure or Google Cloud.

New builds start on Java 25 LTS
25
Projects delivered since 2015
1,000+
Clients across the USA, UK and India
250+
Your code, repository and IP
100%

FIG 03 · Why it matters

Java 17 has left Oracle Premier Support. Spring Boot 4.0 is next.

From Spring’s support data on spring.io and the Stack Overflow Developer Survey 2025, checked on 23 Oct 2026. Oracle’s own roadmap page blocked our reader, so Oracle JDK dates are as listed by endoflife.date.

FIG 04 · Version check

Where your JDK stands

Run java -version on the server, or check the Java version in your pom.xml or build.gradle, then find it below.

Oracle JDK long-term-support releases and support dates
JavaReleasedOracle Premier SupportOracle Extended SupportStatus, 23 Oct 2026What to do
25 LTS16 Sep 2025To 30 Sep 2030To 30 Sep 2033Premier SupportNew builds start here
21 LTS19 Sep 2023To 30 Sep 2028To 30 Sep 2031Premier SupportGood upgrade target
17 LTS14 Sep 2021Ended 30 Sep 2026To 30 Sep 2029Extended Support onlyPlan the move to 21 or 25
11 LTS25 Sep 2018Ended 30 Sep 2023To 31 Jan 2032Extended Support onlyUpgrade to 21 or 25
8 LTS18 Mar 2014Ended 31 Mar 2022To 31 Dec 2030Extended Support onlyUpgrade to 21 or 25

Oracle JDK dates as listed by endoflife.date (updated 21 Oct 2026), a secondary source: Oracle’s Java SE Support Roadmap returned an access error when we checked on 23 Oct 2026. OpenJDK builds from other vendors, such as Eclipse Temurin or Amazon Corretto, follow their own support dates.

Moving the JVM estate to the cloud too? Cloud deployment

FIG 05 · What you get

What our Java development services cover

Back ends, APIs and web apps in Java for enterprises, SaaS products and data-heavy businesses, built on a supported LTS and kept there.

Steaming cup of coffee and coffee beans beside a laptop code editor and a sequence diagram
Java Development · built in-house

01

APIs and microservices

REST and gRPC services on Spring Boot, documented with OpenAPI, secured with Spring Security and split into services only where the domain calls for it.

02

Java web development

Java web development services for portals and internal tools: Spring MVC with server-rendered pages, or a Spring Boot API behind a React or Angular front end.

03

Enterprise integrations

ERPs, CRMs, payment providers and legacy SOAP services connected through Spring Integration, Kafka or plain HTTP clients with retries and audit logs.

04

Batch jobs and data

Spring Batch imports, exports and reports, Kafka streams and JPA or JDBC data access on PostgreSQL, MySQL or Oracle Database.

05

Mobile app back ends

APIs, push notifications and sync for Android and iOS apps, built in Spring Boot alongside the mobile team.

06

Cloud-native Java

Containers on Kubernetes or managed services on AWS, Azure or Google Cloud, with GraalVM native images where start-up time matters.

07

Performance and observability

Virtual threads (final in Java 21) for high-concurrency services, plus metrics, traces and logs wired in through Micrometer and OpenTelemetry.

08

Java and Spring Boot upgrades

Apps on Java 8, 11 or 17 and Spring Boot 2 or 3 moved to Java 21 or 25 and Spring Boot 4, with tests written first where they are missing.

Deliverables

11

deliverables, in writing

Included in every build, written into your fixed quote before work starts.

FIG 06 · Upgrade path

Java and Spring Boot upgrades: 8, 11 and 17 to 21 or 25

Most Java upgrades stall on removed APIs and old libraries, not on the language. We step through the JDK and Spring Boot versions, keep the app deployable at every step and show you the result in a weekly demo.

  • 1. Audit

    Check
    JDK, Spring Boot and every dependency version
    Find
    Removed JDK APIs and unmaintained libraries
    Output
    A written upgrade plan in your fixed quote

  • 2. Tests first

    Add
    JUnit 5 and Testcontainers tests on critical paths
    Why
    Proof the app still works after each step

  • 3. JDK move

    Path
    8 or 11 → 17 → 21 or 25
    Fix
    Java EE modules removed from the JDK in Java 11

  • 4. Spring Boot 2 → 3

    Needs
    Java 17 or later
    Change
    javax.* imports to jakarta.*, with OpenRewrite recipes

  • 5. Spring Boot 3 → 4

    Brings
    Spring Framework 7 and Servlet 6.1 containers
    Target
    Boot 4.1, the current line

  • 6. Release

    How
    A planned deploy with a rollback ready
    Then
    Dates for the next JDK and Boot moves
    DevOps Consulting

FIG 07 · Web and data

Java web development services, end to end

A Java back end rarely lives alone. We build the APIs, the pipelines and the cloud set-up around it, and the front end when you need one.

06principles

  • Web apps on Spring Boot

    Portals, internal tools and SaaS products with a Spring Boot API and a React or Angular front end.

    Web app development

  • APIs and integrations

    Payments, CRMs, ERPs and partner APIs connected with retries and audit logs.

    API integration

  • Data pipelines

    Kafka streams, Spring Batch jobs and warehouse loads.

    Data engineering

  • CI/CD and containers

    Maven or Gradle builds, container images and deploy pipelines.

    DevOps consulting

  • Custom enterprise software

    When the job is bigger than one service, we scope it as custom software.

    Custom software development

  • One team, UI to cloud

    Java back end, front end and cloud from one team.

    Full-stack development

FIG 08 · Hire

Hire Java developers

Dedicated Java developers who join your stand-ups, work in your repository and follow your code review rules, managed from our New Delhi HQ.

06principles

  • Dedicated Java developer

    One full-time Java and Spring Boot developer on your product, working in your tools and your sprint.

  • Java team extension

    Developers, a tester and a lead added to your team for a release, an upgrade or a backlog.

  • Fixed-scope project

    A defined service, upgrade or migration for a fixed quote, delivered in sprints with weekly demos.

  • How dedicated teams work

    Interviews, onboarding, replacements and hand-over, explained.

    Hire dedicated developers

  • AWS, Azure or Google Cloud

    Java services deployed and run on the cloud you already use.

    Cloud deployment

  • Weighing .NET instead?

    The same LTS-first approach on ASP.NET Core and .NET 10.

    .NET development

India

A Java development company in India, from our New Delhi HQ

Looking for a Java development company in India? Our engineering team works from our New Delhi HQ, and Indian clients get a fixed quote in rupees, plus GST.

Software development in New Delhi

FIG 09 · Process · 6 steps

Java development company: how we work

A fixed written quote after a free call, sprints with weekly demos, and an upgrade calendar so the JDK and Spring Boot never drift out of support. You own the code and IP.

Book a call
  1. Step 01

    Free call

    Tell us what you are building or what is breaking. We ask about users, data, integrations and deadlines, not just the framework.

  2. Step 02

    Code or idea review

    For a new service: users, data, integrations and load. For an existing app: JDK, Spring Boot and dependency versions, test coverage, build tooling and hosting.

  3. Step 03

    Fixed written quote

    A written scope, a fixed quote and the plan for versions, hosting and hand-over, before any work starts.

  4. Step 04

    Sprints with weekly demos

    Two-week sprints in your repository, with pull requests you can read, tests in CI and a demo on staging every week.

  5. Step 05

    Launch

    A planned release to AWS, Azure, Google Cloud or your own servers, with health checks, a rollback ready and the next upgrade dates written down.

  6. Step 06

    Support and upgrades

    Security releases applied in a patch window agreed in your written scope, plus planned upgrades before your versions lose support.

FIG 10 · What you get

Everything included

Written into your fixed quote, so you know exactly what you are paying for before work starts.

11items

  • Written scope and fixed quote
  • JDK and dependency audit for existing apps
  • Java 25 or 21 service in your repository
  • Spring Boot 4.x configuration and security
  • JUnit 5 and Testcontainers tests in CI
  • OpenAPI docs for your front-end and mobile teams
  • Maven or Gradle build with dependency checks
  • Deploy pipeline and staging environment
  • Upgrade calendar for the JDK and Spring Boot
  • Runbooks and hand-over notes
  • IP assignment: code and data are yours

FIG 11 · Tech & tools

The tools behind the work

Proven, well-supported tools, chosen for your project and set up in accounts your business owns.

  • Java 25 LTS
  • Java 21 LTS
  • OpenJDK
  • Spring Boot 4.x
  • Spring Framework
  • Spring Security
  • Spring Batch
  • Jakarta EE
  • Hibernate
  • Maven
  • Gradle
  • JUnit 5
  • Testcontainers
  • OpenRewrite
  • GraalVM
  • Kafka
  • PostgreSQL
  • Docker
  • Kubernetes
  • AWS
  • Azure
  • Google Cloud

FIG 12 · Who it’s for

Java work for teams that need it built, upgraded or kept current.

New services, upgrades and dedicated developers, with the same rules: your repository, your IP, supported versions.

4 audiences

Product teams

New Java services and APIs.

Back ends, APIs and web apps on Java 25 with Spring Boot 4.x, built for the load you expect and documented for the teams that call them.

  • Java 25 LTS
  • Spring Boot 4.x
  • OpenAPI docs from day one
  • Tests in CI

FIG 13 · Working with us from the USA and UK

Built in New Delhi. Run on your hours.

Every project gets a point of contact in New York or London and an engineering team in New Delhi. Here is how today’s working days line up, live.

Three ways to work together

  1. 01

    Fixed-scope project

    A written scope, one fixed price and a dated plan. Suits websites, apps and MVPs.

  2. 02

    Dedicated team

    Designers and engineers on your roadmap every month, billed monthly.

  3. 03

    White label

    For US and UK agencies: our work, your brand, unbranded deliverables.

Every engagement

  • Fixed quote in USD, GBP or INR after a free 30-minute call
  • NDA before discovery. You own all code, designs and content
  • A working demo every sprint, not status slides
  • Reply within one business day, calls inside your hours
Book a call

Calls on ET or UK hours

FIG 14 · Spring Boot

Spring Boot versions and open-source support dates

Spring Boot moves faster than the JDK: each minor line gets about 13 months of open-source support. Check spring-boot-starter-parent in your pom.xml or the Boot plugin in build.gradle.

Spring Boot versions and open-source support dates
Spring BootReleasedOSS support untilCommercial support untilMinimum JavaWhat to do
4.130 Jun 202631 Jul 202731 Jul 202817Current: new builds start here
4.030 Nov 202531 Dec 202631 Dec 202717Move to 4.1 before OSS support ends
3.531 May 2025Ended 30 Jun 202630 Jun 203217Upgrade to 4.x
3.4 and older 3.x2024 or earlierEndedVaries17Upgrade to 4.x
2.7 and older2022 or earlierEndedVaries8Java 17 and javax → jakarta first, then 4.x

Release and support dates from Spring’s published support data for Spring Boot (spring.io), checked 23 Oct 2026. Minimum Java from the Spring Boot system requirements; Boot 4.1 also needs Spring Framework 7. Commercial support is a paid offering from Spring’s maintainers, not from Elgrith.

FIG 15 · Hire

Dedicated Java developers vs team extension vs fixed-scope project

We don’t publish rates. This is how the three ways to work with Java developers compare.

Dedicated Java developers vs team extension vs fixed-scope project
Dedicated developerTeam extensionFixed-scope project
Best forA steady backlog on one productA release or a backlog spikeA defined app, upgrade or migration
Who manages the workYou, in your sprintYou, with our leadUs, against a written scope
How it is pricedMonthly, per developerMonthly, per teamOne fixed quote
Code and IPYoursYoursYours
Read our 2026 custom software development cost guide

FIG 16 · Compare

Java or .NET for enterprise apps?

Java or .NET for enterprise apps?
Java.NET (C#)
Main web frameworkSpring BootASP.NET Core
Current long-term releaseJava 25 LTS, released 16 Sep 2025.NET 10 LTS, supported to 14 Nov 2028
Release rhythmA feature release every six months, an LTS every two yearsA new version every November
Strong fitJVM estates, Kafka-heavy data, large integration back endsMicrosoft-centred estates, Azure, SQL Server, Windows desktop
HostingLinux containers, any major cloudLinux or Windows, containers, any major cloud
Our pageYou are here.NET development

FAQ

Frequently asked questions

Straight answers about Java Development with Elgrith.

Start new builds on Java 25, the newest LTS, released 16 September 2025. Java 21 LTS is a sound target for upgrades when a library or platform does not support 25 yet. Both are on Oracle Premier Support (to 30 September 2030 and 2028, as listed by endoflife.date, checked 23 October 2026).

FIG 17 · Related

Keep exploring

All services

Free 30-minute call

Build it on a supported LTS.

Tell us about the service you need, or the Java and Spring Boot versions you are stuck on. After a free call you get a written scope, an upgrade plan if you need one, and a fixed quote.

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