1. [Home](https://www.g2.com/) 2. ... 3. [Java Integrated Development Environments (IDE)](https://www.g2.com/categories/java-integrated-development-environments-ide) 4. [JaCoCo Discussions](https://www.g2.com/products/jacoco/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_ac7e528d1e13fb51d2fc5eead8cc7025/jacoco.png "Product Avatar Image") ](/products/jacoco/reviews) [ JaCoCo ](/products/jacoco/reviews) (52)4.5/5 JaCoCo is a free, open-source Java code coverage library developed by the EclEmma team. It provides detailed insights into code execution during testing, enabling developers to assess the effectiveness of their test suites and identify untested parts of their codebase. By integrating JaCoCo into the development process, teams can enhance software quality and maintainability. Key Features and Functionality: - Comprehensive Coverage Metrics: JaCoCo measures various coverage types, including instruction (C0), branch (C1), line, method, and class coverage. It also analyzes cyclomatic complexity to identify intricate code segments that may require refactoring. - Bytecode Instrumentation: Utilizing Java bytecode instrumentation, JaCoCo operates without needing source files, allowing for seamless integration into diverse Java environments. - Flexible Integration: JaCoCo supports integration with popular build tools such as Maven, Gradle, and Ant, as well as continuous integration platforms like Jenkins and TeamCity. It also offers plugins for IDEs like Eclipse (via EclEmma) and IntelliJ IDEA, facilitating easy adoption into existing workflows. - On-the-Fly Instrumentation: Through a Java agent, JaCoCo performs on-the-fly instrumentation, enabling real-time coverage analysis without modifying the original codebase. Primary Value and Problem Solved: JaCoCo addresses the critical need for effective code coverage analysis in Java development. By providing detailed coverage reports, it helps developers identify untested code paths, ensuring that applications are thoroughly tested. This leads to higher code quality, reduced risk of defects, and improved software reliability. Its lightweight design and flexible integration options make it suitable for various development environments, from individual projects to large-scale enterprise applications. Show More * * * ### 71.0 Nps Score Already have JaCoCo? ### All JaCoCo Discussions Search Most CommentedMost HelpfulCommon QuestionsNewest All DiscussionsDiscussions with CommentsCommon QuestionsDiscussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Common Questions Newest Filter by All Discussions Discussions with Comments Common Questions Discussions without Comments ![Pinned by G2 as a common question](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Pinned by G2 as a common question") G2 Pinned by G2 as a common question • about 4 years ago More Options - [ # What is difference between JaCoCo and SonarQube? ](/discussions/what-is-difference-between-jacoco-and-sonarqube) What is difference between JaCoCo and SonarQube? 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Answer a few questions to help the JaCoCo community [ Yes ](javascript:void(0))[ Yes ](https://www.g2.com/login?context=product_review&return_to=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fjacoco%2Fdiscuss%3Fsmall_ask%3Djacoco) No ## Top Contributors in JaCoCo 1 ![Ashish G.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Ashish G.") AG Loading... ### [Ashish G.](https://www.g2.com/users/78da0961-3ed5-45ac-8526-25acebe13113 "Ashish G.") Software Development Engineer II - Backend 1 pt 2 ![Prashant P.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Prashant P.") PP Loading... ### [Prashant P.](https://www.g2.com/users/5a4b1d3f-2ed7-48e8-aad5-829b4010ae94 "Prashant P.") Software Engineer 1 pt 3 ![Valentin L.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Valentin L.") VL Loading... ### [Valentin L.](https://www.g2.com/users/f19c9969-8bd2-4f90-aeb1-45dca9906d65 "Valentin L.") production supervisor 1 pt