Following is a handpicked list of Java Tools for Developers, with their popular features and website links. The list contains both open source(free) and commercial(paid) tools.

1) Site24x7

Monitor the performance of your Java applications with Site24x7 APM Insight. Site24x7 is a SaaS-based all-in-one monitoring solution for DevOps and IT. With Site24x7 APM, you can get a holistic view of your application performance in real-time and debug errors with ease. Key Features: Platforms: Windows and Linux Programming Languages Supports: Java, .NET, Ruby, PHP, Node.js, and Python Free Trial: 30 Days Free Trial

Get a bird’s eye view of Java app performance with application dependency maps Support for monitoring individual methods or functions in code using custom instrumentation Support for distributed tracing – identify errors across microservices and distributed architecture Real-time reports on JVM performance including key metrics like JVM CPU usage, garbage collection, run-time memory, heap memory, with alerting. It provides Java, .NET, Ruby, PHP, Node.js, and Python languages supports Seamlessly integrates with ServiceNow, PagerDuty, Opsgenie, Jira, Moogsoft, ConnectWise Manage, Zoho Desk, ManageEngine AlarmsOne, Webhooks, Slack, Microsoft Teams, and more. This tool also provide Mobile access, SLA management, Hosted status pages, For Managed Service Providers, Alerts and reports, Root cause analysis, Web Page Speed, Website Monitoring, DNS Server Monitoring, 120+ Global Monitoring Locations, Website Availability Monitoring (HTTP / HTTPS), Website Defacement Monitoring, and more. Offers plugin support MySQL, WebLogic, GlassFish, Tomcat, Apache, Nagios databases, load balancers, message brokers and caches It provides customer support via Chat, Contact Form, Email and Phone Supported Platforms: Windows and Linux Price: Plans start at $9 a month Free Trial: 30 Days Free Trial

Visit Site24x7 » 30 Days Free Trial

2) ManageEngine Applications Manager

ManageEngine Applications Manager helps proactively monitor Java applications and the infrastructure performance. Features: Platforms: Windows and Linux Programming Languages Supports: GO, C++, Python, Java, JavaScript, and Swift Free Trial: 30 Days Free Trial

Monitor, optimize and troubleshoot Java application performance with the help of code-level insights, distributed traces, and more. Supports monitoring of Java Virtual Machine (JVM), Java Runtime Environment (JRE), Java application server, JDBC, JMX and Java thread dumps. prevent fault occurrence and unnecessary oversight. Automatic corrective actions using web hooks to start external actions. Machine learning enabled analytics which helps anticipate future resource utilization and growth. It provides GO, C++, Python, Java, JavaScript, and Swift languages supports Seamlessly integrates with OpManager, AlarmsOne, Analytics Plus, ServiceDesk Plus, ServiceNow and Slack This tool also provide Application Discovery and Dependency Mapping, Business Service Management, Fault Management and Alerts, Application Analytics, Mobile Application and REST APIs Offers plugin support OpManager, APM plugin It provides customer support via Chat, Email and Phone Supported Platforms: Windows, Mac and Linux Price: Plans start at $395 for 10 Monitors with 1 User Free Trial: 30 Days Free Trial

Visit ManageEngine » 30 Days Free Trial

3) JUnit

JUnit is an open source unit testing tool for Java programming language. It is important Java development tool for test-driven development and deployment.

Features:

Preparation of input data and setup/creation of fake objects Loading databases with a specific known set of data It provides annotations so that test classes can have fixture run before or after every test JUnit provides support for writing and running tests It provides annotations to identify test methods Provides assertions for testing expected results JUnit tests allow writing codes faster, which increases quality It provides Java, React, Go, Python, Node.js languages supports Seamlessly integrates with Eclipse, NetBeans, Mockito, etc. This tool also provide Hierarchical test structures, Display names and tags Offers plugin support Gradle, Project Report, and Project Build Plugins It provides customer support via Email Supported Platforms: Windows, Mac and Linux Price: Open Source Tool Free to Download

Download link: http://junit.org/junit4/

4) NetBeans

NetBeans is FREE, open-source IDE. It is one of the best Java developer tools which allows developing desktop, mobile and web applications.

Features:

It offers complete support for Latest Java Technologies Support for fast & smart code editing Easy & Efficient Project Management process Rapid User Interface Development Helps to write bug-free code NetBeans IDE offers superior support for C/C++ and PHP developers It provides Java, JavaScript, PHP and HTML languages supports Seamlessly integrates with Databases, and Source Code Management tools This tool also provide Contributing code, Validating issues and Reporting issues Offers plugin support NetBeans CSV Editor, NB Figletize, NB SpringBoot, Codename One NetBeans Plugin, jVi for NB Update Center, Twig Linter, Upload Files Button, External Java Code Formatters for NetBeans, Yoda Quote and GUI Popup & Inspect It provides customer support via Email Supported Platforms: Windows, Mac and Linux Price: Open Source Tool Free to Download

Download link: https://netbeans.org/downloads/index.html

5) Apache Maven

Apache Maven is a software Project Management Tool. It is based on the Project Object Model (POM) concept.

Features:

Simple project setup that follows best practices to get a new project or module started in seconds This Java programmer software allows easy writing of plugins using Java Instant access to new features with very few extra configuration Ant tasks for dependency management and deployment outside of Maven Release management and distribution publication It encourages the use of a central repository of JARs and other dependencies It provides Java, C, C++, Perl, Tcl and Python languages supports Seamlessly integrates with Eclipse IDE, JetBrains This tool also provide Simple project setup, Superior dependency management, Manage a project’s Build, Reporting and Documentation Offers plugin support clean, compiler, deploy, failsafe, install, resources, site, surefire and verifier It provides customer support via Email Supported Platforms: Windows, Mac and Linux Price: Open Source Tool Free to Download

Download link: http://maven.apache.org/download.cgi

6) Mockito

Mockito is an Open Source Java Mocking and Unit Testing Tool. Mockito is a popular open source Java mocking framework. It helps developers to write clean, well-designed and loosely-coupled code.

Features:

It can be used to write Behaviour Driven Development style tests with syntactic sugar facilitates It offers nice, easily readable syntax. It also provides some annotations needed for reducing boilerplate code Mockito allows writing of relaxed tests It provides Python, Java, C++, .NET languages supports Seamlessly integrates with JUnit This tool also provide Partial mocking, Automatically inject mocks, Speed with test automation, High quality tests, Unlock continuous delivery, Securing production code quality, and more. Offers plugin support MockMaker, PluginSwitch and StackTraceCleanerProvider, and more. It provides customer support via Email Supported Platforms: Windows Price: Open Source Tool Free to Download

Download link: http://site.mockito.org/

7) Ehcache

Ehcache is an open source, standards-based caching tool for Java language. It is robust, proven, full-featured tool which can be integrated with other popular libraries and frameworks.

Features:

Ehcache strives to maintain a small footprint to keep apps as light as possible Revamped API that leverages Java generics and Cache interactions API is very simple and easy to use Scalable to hundreds of caches Allows box Spring Caching and Hibernate integration to with javax.cache support It provides Java languages supports Seamlessly integrates with GitHub and Jira This tool also provide Minimal dependencies, Scalable, Flexible, Standards Based, Distributed Caching and Extensible Offers plugin support Springcache It provides customer support via community & support forums Supported Platforms: Windows Price: Open Source Tool Free to Download

Download link: http://www.ehcache.org/downloads/

8) VisualVM

VisualVM is a visual tool for integrating command-line JDK tools. It also offers lightweight profiling capabilities. It is designed for both development and production time use.

Features:

It displays both local and remote Java Processes Monitor Process Performance and Memory Visualize Process Threads Profile Performance and Memory Usage Take and Display Thread Dumps It can read basic information about the crashed Java process Helps to analyze Core Dumps It provides JavaScript, Python, Ruby, R, Java, Scala, Kotlin, Clojure, C and C++ languages supports Seamlessly integrates with NetBeans, Eclipse, IntelliJ IDEA and VS Code This tool also provide Display local and remote Java processes, Display process configuration, Monitor process performance, Visualize process threads, and more. Offers plugin support Eclipse, Visual GC, MBeans, Tracer, Go To Source, Threads Inspector, Buffer Monitor, Security, OQL, JConsole, VisualVM, BTrace, Coherence, CRaSH and TDA It provides customer support via Email and Chat Supported Platforms: Windows, Mac and Linux Price: Open Source Tool Free to Download

Download link: https://visualvm.github.io/download.html

9) Oracle JDeveloper

Oracle J Developer is a free Java development IDE. It is one of the best Java tools which allows developers to build reliable Service Oriented Architecture with Java. It supports the full development life cycle.

Features:

Ability to generate servlets which operate as EJB clients It supports creating and editing Web Socket annotations of Java classes Allows to specify a configuration class to hold the Meta data It provides Java, Oracle Database, MySQL and Linux languages supports Seamlessly integrates with Hormel, Mastercard, Dropbox, FedEx, Skanska, MRV, CES, plusoft, XEROX, NI, NRMA, Heathrow, digi and Coronado This tool also provide Flexible load balancer, Outbound data transfer, VCN Flow Logs, Site-to-Site VPN, Content Management Starter Edition, etc. Offers plugin support Bastion, Block Volume Management, Compute Instance Monitoring, Compute Instance Run Command, Custom Logs Monitoring, Management Agent, Oracle Autonomous Linux, Oracle Java Management Service, OS Management Service Agent, Vulnerability Scanning, NetBeans and SDK It provides customer support via Phone and Chat Supported Platforms: Windows, Mac and Linux Price: Free to Download

Download link: https://www.oracle.com/tools/downloads/jdeveloper-12c-downloads.html

10) Java Decompiler

Java Decompiler is a freeware Java tool that reconstructs Java source code from CLASS files. It allows to decompile, Java applets, JAR and ZIP files for producing accurate Java source code.

Features:

The tool supports Drag and Drop It displays color coded Source Code It provides Java languages supports Seamlessly integrates with Eclipse This tool also provide Displays Java source codes, Debugging, Recover lost source code, open source projects, etc. Offers plugin support JD-Eclipse It provides customer support via GitHub forum Supported Platforms: Windows, Mac and Linux Price: Open Source Tool Free to Download

Download link: http://java-decompiler.github.io/

11) Gradle

Gradle is a project automation Java tool. It builds on the features of Apache Ant and Apache Maven. It also serves as the default build tool for the Android platform.

Features:

Better modeling of dependencies using the Java Library plugin reduces the size of the compile classpath It comes with a remote build cache with convenient management tools Gradle Wrapper allows to execute Gradle builds on machines where it is not installed It supports multi-project builds and also partial builds It can easily adapt to any structure Its smart classpath helps to avoid unnecessary compilation when the binary interface of a library not changed It provides Python, C++, Java and Python languages supports Seamlessly integrates with Slack, Bamboo, GitLab, TeamCity, CircleCI, Jenkins, Github and TravisCI This tool also provide Customizable logging, Build performance summary, Visual build timeline, Performance data, Test behavior details, etc. Offers plugin support Liferay, Kelin, Jetbrains, ebean, Quarkus, Ktlint and GraphQL It provides customer support via Chat, Contact Form, Email and Phone Supported Platforms: Windows, Mac and Linux Price: Open Source Tool Free to Download

Download link: https://gradle.org/

12) Cobertura

Cobertura is free Java tool that calculates the percentage of code accessed by tests. It can also be used to identify which parts of Java program are lacking test coverage.

Features:

It allows line and branch coverage in a detailed tree view View source code and colored according to line coverage Launch Scala, Eclipse JUnit, and PDE in covered mode It filters out uninteresting classes and packages Instruments Java bytecode after finishing compiling Allows to generate reports in HTML or XML Display the percentage of lines, branches covered for each class, package, and the entire project It provides Java, HTML, PHP, JavaScript, CSS and Groovy languages supports This tool also provide Calculates the percentage of code accessed by tests, Identify lacking test coverage, Generate coverage reports Offers plugin support Maven plugin It provides customer support via GitHub forum, Email, Ticket Supported Platforms: Windows Price: Open Source Tool Free to Download

Download link: http://cobertura.github.io/cobertura/

13) Groovy

Groovy is a powerful language with static-typing & compilation capabilities. It is aimed at improving developer’s productivity.

Features:

Concise, readable and expressive syntax It integrates easily with any Java program to deliver an effective application with powerful features Seamlessly integrates with Java and other third-party libraries Flexible & malleable syntax, advanced integration & customization Great for writing concise and maintainable tests It provides Java, Python, Ruby and Smalltalk languages supports Seamlessly integrates with Groovy Eclipse, IntelliJ IDEA, Netbeans, Groovy Emacs Modes, TextMate, vim, UltraEdit, SlickEdit, EditRocket and VSCode This tool also provide Support for both static and dynamic typing, Support for operator overloading, Support for various markup languages such as XML and HTML. Offers plugin support Groovy Eclipse Plugin, TextMate, Vim, UltraEdit, EditRocket, etc. It provides customer support via Email, Slack, Reporting Issues Supported Platforms: Windows Price: Open Source Tool Free to Download

Download link: http://groovy-lang.org/download.html

14) Yourkit

YourKit is an innovative tool for profiling Java &.NET applications. It is the standard-setter in the evolution of profiling tools.

Features:

Straightforward installation process Developer friendly environment Powerful analysis capabilities Built-in SSH tunneling supports ease profiling in restricted network conditions Permissive license policy allows unlimited number of profiled applications It offers high-level monitoring web, database, I/O High-level profiling results to see the big picture and find out the exact issues It provides Java, .NET and JavaScript languages supports Seamlessly integrates with Eclipse, IntelliJ IDEA, JDeveloper, NetBeans This tool also provide Profile remote applications, CPU profiling, Flame graphs, Database queries and web requests, Memory profiling, Comparing CPU and memory snapshots, Performance inspections, Telemetry and performance charts, Exception profiling, Command line interface ,etc. Offers plugin support Jenkins, Eclipse, TeamCity and Bamboo It provides customer support via Email and Phone Supported Platforms: Aix, FreeBSD, Windows, Mac and Linux Price: Request a Quote from Sales Free Trial: 15 Days Free Trial

Download link: https://www.yourkit.com/java/profiler/download/

15) Eclipse

Eclipse is an open-source integrated development environment for Java. It is one of the best core Java tools that offers modern features, large numbers of modeling tools, java testing tools, and development frameworks.

Features:

Model Driven Development Provide Complete Detailed reports It is also easy to customize. In conjunction with the Ctrlflow Automated Error Reporting Server Eclipse offers the best tooling for JEE projects It provides C, C++ and Java, and JavaScript languages supports Seamlessly integrates with JUnit, JBoss Tools, EGradle IDE, MetaEdit+ plugin, Cantata, Industrial TSI, etc. This tool also provide Code, Build & Debug in your browser, IDEs are packaged and distributed as Linux Containers, Share development setups with a URL and Multi-tenant by default Offers plugin support GitHub, Gitlab, Bitbucket, Eclipse IDE and Nodeclipse It provides customer support via Email Supported Platforms: Windows, Mac and Linux Price: Free to Download

Download link: https://www.eclipse.org/

16) IntelliJ Idea

IntelliJ IDEA is a multi-purpose IDE which focuses on Java development. It is one of the best Java programming tools that offers advanced support for the web, mobile, and hybrid application development.

Features:

It analyses source code between all project files and languages It gives list of the most relevant symbols applicable in the current context It allows cross-language refactoring Finds duplicate code fragments on the fly Inspections and quick-fixes Editor-centric environment It allows user to use static methods or constants easily It provides JavaScript, TypeScript, HTML, CSS, Node.js, Angular, React, Vue.js, Java, Kotlin, Groovy and Scala languages supports Seamlessly integrates with Slack, Confluence, Mailbox, VCS, Zendesk and Upsource This tool also provide Developer ergonomics, Deep code insight, Instant navigation and search, Run, test, and debug, Version control, JVM frameworks, Client-side and JavaScript development, Deployment, Collaboration and teamwork. Offers plugin support Kubernetes, PyCharm, JetBrains and ReSharper It provides customer support via Contact Form, Email and Phone Supported Platforms: Windows, Mac and Linux Price: Plans start at $14.90 a month. Free Trial: 30 Days Free Trial

Download link: https://www.jetbrains.com/idea/download/download-thanks.html

FAQs:

❓ What are Java Tools?

🚀 Which are the Best Java Development Tools?

✅ How various Java Tools are used in Application Development?

Site24x7 ManageEngine Applications Manager JUnit NetBeans Apache Maven Mockito Ehcache

Java tools are used to monitor, optimize and improve the performance of Java applications Finding runtime and compile-time issues in Java programs Monitoring of JVM, JRE, Java application server, JDBC, JMX, etc. It is used to analyze the physical and virtual Java server metrics like fan speed, power supply, temperature, etc. Java tools are used to automate the patching process These tools are used to write and run tests with ease Java tools are used for easy and efficient Java project management These tools help to monitor individual methods and functions in Java code