the Best Of Java

This repository is a list of great frameworks, libraries and software for the Java programming language.

Contents

• Projects
  • Bean Mapping
  • Build
  • Bytecode Manipulation
  • Caching
  • CLI
  • Cluster Management
  • Code Analysis
  • Code Coverage
  • Code Generators
  • Compiler-compiler
  • Computer Vision
  • Configuration
  • Constraint Satisfaction Problem Solver
  • CSV
  • Data Structures
  • Database
  • Date and Time
  • Dependency Injection
  • Development
  • Distributed Applications
  • Distributed Transactions
  • Distribution
  • Document Processing
  • Financial
  • Formal Verification
  • Functional Programming
  • Game Development
  • Geospatial
  • GUI
  • High Performance
  • HTTP Clients
  • Hypermedia Types
  • IDE
  • Imagery
  • Introspection
  • Job Scheduling
  • JSON
  • JVM and JDK
  • Logging
  • Machine Learning
  • Messaging
  • Microservice
  • Miscellaneous
  • Mobile Development
  • Monitoring
  • Native
  • Natural Language Processing
  • Networking
  • ORM
  • PaaS
  • PDF
  • Performance analysis
  • Platform
  • Processes
  • Reactive libraries
  • REST Frameworks
  • Science
  • Search
  • Security
  • Serialization
  • Server
  • Template Engine
  • Testing
  • Utility
  • Version Managers
  • Web Crawling
  • Web Frameworks
  • Workflow Orchestration Engines
• Resources
  • Related Awesome Lists
  • Communities
  • Frontends
  • Influential Books
  • Podcasts and Screencasts
  • People
  • Websites

Projects

Bean Mapping

Frameworks that ease bean mapping.

• dOOv - Provides fluent API for typesafe domain model validation and mapping. It uses annotations, code generation and a type safe DSL to make bean validation and mapping fast and easy.
• JMapper - Uses byte code manipulation for lightning-fast mapping. Supports annotations and API or XML configuration.
• MapStruct - Code generator that simplifies mappings between different bean types, based on a convention-over-configuration approach.
• ModelMapper - Intelligent object mapping library that automatically maps objects to each other.
• Orika - JavaBean-mapping framework that recursively copies (among other capabilities) data from one object to another.
• reMap - Lambda and method handle-based mapping which requires code and not annotations if objects have different names.
• Selma - Annotation processor-based bean mapper.

Build

Tools that handle the build cycle and dependencies of an application.

• Apache Maven - Declarative build and dependency management that favors convention over configuration. It might be preferable to Apache Ant, which uses a rather procedural approach and can be difficult to maintain.
• Bazel - Tool from Google that builds code quickly and reliably.
• Buck - Encourages the creation of small, reusable modules consisting of code and resources.
• Gradle - Incremental builds programmed via Groovy instead of declaring XML. Works well with Maven's dependency management.

Bytecode Manipulation

Libraries to manipulate bytecode programmatically.

• ASM - All-purpose, low-level bytecode manipulation and analysis.
• Byte Buddy - Further simplifies bytecode generation with a fluent API.
• bytecode-viewer - Java 8 Jar & Android APK reverse engineering suite. (GPL-3.0-only)
• Byteman - Manipulate bytecode at runtime via DSL (rules); mainly for testing/troubleshooting. (LGPL-2.1-or-later)
• cglib - Bytecode generation library.
• Javassist - Tries to simplify bytecode editing.
• Mixin - Manipulate bytecode at runtime using real Java code.
• Perses - Dynamically injects failure/latency at the bytecode level according to principles of chaos engineering.

Caching

Libraries that provide caching facilities.

• cache2k - In-memory high performance caching library.
• Caffeine - High-performance, near-optimal caching library.
• Ehcache - Distributed general-purpose cache.
• Infinispan - Highly concurrent key/value datastore used for caching.

CLI

Libraries for everything related to the CLI.

• ASCII Table - Library to draw tables in ASCII.
• Airline - Annotation-based framework for parsing Git-like command-line arguments.
• args4j - Small library to parse command-line arguments.
• Jansi - ANSI escape codes to format console output.
• Java ASCII Render - Graphical primitives for the console.
• JCommander - Command-line argument-parsing framework with custom types and validation via implementing interfaces.
• jbock - Reflectionless command line parser.
• Jexer - Advanced console (and Swing) text user interface (TUI) library, with mouse-draggable windows, built-in terminal window manager, and sixel image support. Looks like Turbo Vision.
• JLine - Includes features from modern shells like completion or history.
• JOpt Simple - Fluent parser that uses the POSIX#getopt and GNU#getopt_long syntaxes.
• picocli - ANSI colors and styles in usage help with annotation-based POSIX/GNU/any syntax, subcommands, strong typing for both options and positional args.
• Text-IO - Aids the creation of full console-based applications.
• Lanterna - Easy console text-GUI library, similar to curses. (LGPL-3.0-only)

Cluster Management

Frameworks that can dynamically manage applications inside of a cluster.

• Apache Aurora - Mesos framework for long-running services and cron jobs.
• Singularity - Mesos framework that makes deployment and operations easy. It supports web services, background workers, scheduled jobs, and one-off tasks.

Code Analysis

Tools that provide metrics and quality measurements.

• Checkstyle - Static analysis of coding conventions and standards. (LGPL-2.1-or-later)
• Error Prone - Catches common programming mistakes as compile-time errors.
• Infer - Modern static analysis tool for verifying the correctness of code.
• jQAssistant - Static code analysis with Neo4J-based query language. (GPL-3.0-only)
• NullAway - Eliminates NullPointerExceptions with low build-time overhead.
• PMD - Source code analysis for finding bad coding practices.
• SonarJava - Static analyzer for SonarQube & SonarLint. (LGPL-3.0-only)
• Spoon - Library for analyzing and transforming Java source code.
• Spotbugs - Static analysis of bytecode to find potential bugs. (LGPL-2.1-only)

Code Coverage

Frameworks and tools that enable code coverage metrics collection for test suites.

• Clover - Relies on source-code instrumentation instead of bytecode instrumentation.
• Cobertura - Relies on offline (or static) bytecode instrumentation and class loading to collect code coverage metrics. (GPL-2.0-only)
• JaCoCo - Framework that enables collection of code coverage metrics, using both offline and runtime bytecode instrumentation.

Code Generators

_Tools that generate patterns for repetitive code in order to reduce verbosity