Java Refactoring for Java Developers

How you can save yourself from spending hours of exhausting refactoring work or bug fixes with just one click!

jSparrow the bird with pirate hat

We help you have fun with programming and to concentrate on the essentials: development!

  • Reduce your maintenance work by up to 47% so you can focus on the development
  • Get faster processes and state-of-the-art solutions with less work by running jSparrow
  • Available and professional support from an expert team of highly qualified programmers
  • An extensive documentation area, so you can learn how jSparrow improves your code
Start a free trial


Captain jSparrow

Dive into the world of jSparrow


jSparrow your All-in-One Refactoring Tool for Java

jSparrow is an Eclipse plugin that automates refactoring and therefore makes repetitive work unnecessary. jSparrow can help in the following regards: minimizing code smells, upgrading to new Java versions (transforming old language constructs in new language constructs), and getting performance improvements by using more efficient constructs.

Quick links

Start a free trial What is jSparrow? jSparrow the bird with pirate hat

Thousands of developers have refactored with jSparrow

List of developers working with or in companies:

  • SVS Gemeinsam gesünderSVS logo
  • DWD Deutscher WetterdienstDWD logo
  • Githubgithub logo
  • MavenMAVEN logo
  • Kapsch: challenging limitsKapsch logo
  • Eclipse IDEEclipse IDE logo

Save Time, Solve Issues

See statistics

Statistics Example of jSparrow

228,616 Issues found

12,581 files fixed

15,997 hours 33 minutes time saved

Advantages of jSparrow

We promote education

the jsparrow bird with a student cap and papyrus

Splendid IT GmbH offers every official IT-student a voucher for 50% off globally. We value the next generation of java developers and we wish to support their growth with our product.

Unique incentives

the jsparrow bird with a bubbles and inside one bubble is a chest

We offer a dedicated affiliate program with rewards for everyone who contributes to jSparrow’s growth.

Bring three use jSparrow free!

the jsparrow bird with three other birds and floating keys above their heads

In our member’s area, you will obtain your personal referral link. You will benefit from every user registering through your personal recommendation and will be able to profit from jSparrow. For more information:

Find and fix Java issues with just one click

Start a free trial

State-of-the-art coding conventions

jSparrow 114 rules include the following tags


Performance in programs is usually related to avoiding unnecessary computations, optimizing loops, or using efficient methods provided by common APIs.

the jsparrow bird looking at a map and traveling on a small pirate  boat


Security issues refer to vulnerabilities that can be exploited by an attacker to perform unauthorized actions within a computer program.

the jsparrow bird with a cutlasses


Readability refers to the ease with which a human reader can comprehend the purpose, control flow, and operation of source code.

the jsparrow bird pointing with a stick on a cross drawn on a treasure map


jSparrow rules, having this tag, are designed to improve JUnit test cases benefitting from the new features in JUnit 5 and other related testing libraries.

the jsparrow bird doing a chemical experiment with a treasure map. In the background is a text 'no pirate'

How to fix Java Issues


Our Partners & Distributors

  • logo component source
  • logo softwareone
  • logo swisscom
  • logo easirun

Get Started with your free trial

Captain jSparrow

Start a free trial

No hidden payments – no card required