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[Ancients](#ancients) [由来已久的]\n    - [Bean Mapping](#bean-mapping) [Bean映射]\n    - [Build](#build) [构建]\n    - [Bytecode Manipulation](#bytecode-manipulation) [字节码操作]\n    - [Caching](#caching) [缓存]\n    - [Cluster Management](#cluster-management) [集群管理]\n    - [Code Analysis](#code-analysis) [代码分析]\n    - [Code Coverage](#code-coverage) [代码覆盖]\n    - [Command-line Argument Parsers](#command-line-argument-parsers) [命令行参数解析]\n    - [Compiler-compiler](#compiler-compiler) [内嵌编译器]\n    - [Configuration](#configuration) [配置相关]\n    - [Constraint Satisfaction Problem Solver](#constraint-satisfaction-problem-solver) [优化解决问题]\n    - [Continuous Integration](#continuous-integration) [持续集成]\n    - [CSV](#csv) [CSV]\n    - [Data structures](#data-structures) [数据结构]\n    - [Database](#database) [数据库]\n    - [Date and Time](#date-and-time) [日期和时间]\n    - [Dependency Injection](#dependency-injection) [依赖注入]\n    - [Development](#development) [开发]\n    - [Distributed Applications](#distributed-applications) [分布式应用]\n    - [Distributed Databases](#distributed-databases) [分布式数据库]\n    - [Distribution](#distribution) [原生分布式]\n    - [Document Processing](#document-processing) [文档处理]\n    - [Formal Verification](#formal-verification) [格式校验]\n    - [Functional Programming](#functional-programming) [函数式编程]\n    - [Game Development](#game-development) [游戏开发]\n    - [Geospatial](#geospatial) [地理空间]\n    - [GUI](#gui) [图形用户界面]\n    - [High Performance](#high-performance) [高性能计算]\n    - [IDE](#ide) [开发工具]\n    - [Imagery](#imagery) [图形处理]\n    - [JSON Processing](#json-processing) [JSON处理]\n    - [JSON](#json) [JSON]\n    - [JVM and JDK](#jvm-and-jdk) [JVM和JDK]\n    - [Logging](#logging) [日志]\n    - [Machine Learning](#machine-learning) [机器学习]\n    - [Messaging](#messaging) [消息组件]\n    - [Miscellaneous](#miscellaneous) [混杂的]\n    - [Monitoring](#monitoring) [监控 ]\n    - [Native](#native) [系统库交互]\n    - [Natural Language Processing](#natural-language-processing) [自然语言处理]\n    - [Networking](#networking) [网络]\n    - [ORM](#orm) [对象关系映射]\n    - [PDF](#pdf) [PDF]\n    - [Performance analysis](#performance-analysis) [性能分析]\n    - [Platform](#platform) [平台]\n    - [Reactive libraries](#reactive-libraries) [响应式编程库]\n    - [REST Frameworks](#rest-frameworks) [REST框架]\n    - [Science](#science) [科学计算]\n    - [Search](#search) [搜索]\n    - [Security](#security) [安全]\n    - [Serialization](#serialization) [序列化]\n    - [Server](#server) [服务器]\n    - [Template Engine](#template-engine) [模板引擎]\n    - [Testing](#testing) [测试]\n    - [Utility](#utility) [工具类]\n    - [Web Crawling](#web-crawling) [网络爬虫]\n    - [Web Frameworks](#web-frameworks) [网络框架]\n- [Resources](#resources)\n    - [Communities](#communities) [委员会]\n    - [Frontends](#frontends) [前端]\n    - [Influential Books](#influential-books) [有影响力的书]\n    - [Podcasts](#podcasts) [播客]\n    - [Twitter](#twitter) [Twitter]\n    - [Websites](#websites) [网站]\n- [Contributing](#contributing)\n\n## Ancients\n[由来已久的]\n\n*In existence since the beginning of time and which will continue being used long after the hype has waned.*\n\n* [Apache Ant](http://ant.apache.org/) - Build process management with XML.\n* [Apache Hadoop](http://hadoop.apache.org/) - Storage and large-scale processing of data-sets on clusters of commodity hardware.\n* [Apache OpenNLP](https://opennlp.apache.org/) - Toolkit for common tasks like tokenization.\n* [Apache Velocity](http://velocity.apache.org/) - Templates for HTML pages, emails or source code generation in general.\n* [FreeMarker](http://freemarker.org/) - General templating engine without any heavyweight or opinionated dependencies.\n* [GlassFish](https://glassfish.java.net/) - Application server and reference implementation for Java EE sponsored by Oracle.\n* [GWT](http://www.gwtproject.org/) - Toolbox which includes a Java-to-JavaScript compiler for client-side code, XML parser, API for RPC, JUnit integration, internationalization support and widgets for the GUI.\n* [HornetQ](http://hornetq.jboss.org/) - Clear, concise, modular and made to be embedded.\n* [Hudson](http://hudson-ci.org/) - Continuous integration server still in active development.\n* [Java Modeling Language (JML)](http://www.eecs.ucf.edu/~leavens/JML/) - Behavioral interface specification language that can be used to specify the behavior of code modules. It combines the design by contract approach of Eiffel and the model-based specification approach of the Larch family of interface specification languages, with some elements of the refinement calculus. Used by several other verification tools.\n* [JavaCC](https://javacc.java.net/) - More specific and slightly easier to learn. Has syntactic lookahead.\n* [JavaServer Faces](https://javaserverfaces.java.net/) - Oracle's open-source implementation of the JSF standard, Mojarra.\n* [JavaServer Pages](https://jsp.java.net/) - Common templating for websites with custom tag libraries.\n* [JUnit](http://junit.org/) - Common testing framework.\n* [Launch4j](http://launch4j.sourceforge.net/) - Wraps JARs in lightweight and native Windows executables.\n* [Quartz](https://github.com/quartz-scheduler/quartz) - Open-source job scheduler library with Apache 2.0 license.\n* [TestNG](http://testng.org/) - Testing framework.\n* [Trove](http://trove.starlight-systems.com/) - Primitive collections.\n\n## Bean Mapping \n[Bean映射]\n\n*Frameworks that ease bean mapping.*\n\n* [Dozer](https://github.com/DozerMapper/dozer/) - Mapper that copies data from one object to another, using annotations, API or XML configuration.\n* [JMapper](http://jmapper-framework.github.io/jmapper-core/) - Using byte code manipulation for lightning fast mapping. Supporting annotations, API or XML configuration.\n* [MapStruct](https://github.com/mapstruct/mapstruct) - Code generator which simplifies mappings between different bean types, based on a convention over configuration approach.\n* [ModelMapper](https://github.com/jhalterman/modelmapper) - ModelMapper is an intelligent object mapping library that automatically maps objects to each other.\n* [Orika](https://github.com/orika-mapper/orika) - Orika is a Java Bean mapping framework that recursively copies (among other capabilities) data from one object to another.\n* [Selma](https://github.com/xebia-france/selma) - Stupid Simple Statically Linked Mapper. Selma is an Annotation Processor Based bean mapper.\n\n## Build \n[构建]\n\n*Tools which handle the build cycle and dependencies of an application.*\n\n* [Apache Maven](http://maven.apache.org/) - Declarative build and dependency management which favors convention over configuration. It might be preferable to Apache Ant which uses a rather procedural approach and can be difficult to maintain.\n* [Bazel](http://bazel.io) - Build tool from Google that builds code quickly and reliably.\n* [Gradle](http://gradle.org/) - Incremental builds which are programmed via Groovy instead of declaring XML. Works well with Maven's dependency management.\n\n## Bytecode Manipulation \n[字节码操作]\n\n*Libraries to manipulate bytecode programmatically.*\n\n* [ASM](http://asm.ow2.org/) - All purpose, low level, bytecode manipulation and analysis.\n* [Byte Buddy](http://bytebuddy.net/) - Further simplifies bytecode generation with a fluent API.\n* [Byteman](http://byteman.jboss.org/) - Manipulate bytecode at runtime via DSL (rules) mainly for testing/troubleshooting.\n* [cglib](https://github.com/cglib/cglib) - Bytecode generation library.\n* [Javassist](http://jboss-javassist.github.io/javassist/) - Tries to simplify the editing of bytecode.\n\n## Caching \n[缓存]\n\n*Libraries which provide caching facilities.*\n\n* [Caffeine](https://github.com/ben-manes/caffeine) - High performance, near optimal caching library.\n* [Ehcache](http://www.ehcache.org/) - Distributed general purpose cache.\n\n## Cluster Management \n[集群管理]\n\n*Frameworks which can dynamically manage applications inside of a cluster.*\n\n* [Apache Aurora](http://aurora.apache.org/) - Apache Aurora is a Mesos framework for long-running services and cron jobs.\n* [Apache Mesos](http://mesos.apache.org/) -  Abstracts CPU, memory, storage, and other compute resources away from machines.\n* [Singularity](http://getsingularity.com/) - Singularity is a Mesos framework that makes deployment and operations easy. It supports web services, background workers, scheduled jobs, and one-off tasks.\n\n## Code Analysis \n[代码分析]\n\n*Tools that provide metrics and quality measurements.*\n\n* [Checkstyle](https://github.com/checkstyle/checkstyle) - Static analysis of coding conventions and standards.\n* [Codacy](https://www.codacy.com) - Continuous static analysis, code coverage, and software metrics to automate code reviews.\n* [Error Prone](https://github.com/google/error-prone) - Catches common programming mistakes as compile-time errors.\n* [FindBugs](http://findbugs.sourceforge.net/) - Static analysis of bytecode to find potential bugs.\n* [jQAssistant](http://jqassistant.org/) - Static code analysis with Neo4J-based query language.\n* [PMD](https://github.com/pmd/pmd) - Source code analysis for finding bad coding practices.\n* [SonarQube](http://www.sonarqube.org/) - Integrates other analysis components via plugins and provides an overview of the metrics over time.\n\n## Code Coverage \n[代码覆盖]\n\n*Frameworks and tools that enable collection of code coverage metrics for test suites.*\n\n* [Clover](https://www.atlassian.com/software/clover/overview) - Proprietary code coverage tool by Atlassian that relies on source-code instrumentation, instead of bytecode instrumentation.\n* [Cobertura](http://cobertura.github.io/cobertura/) - Relies on offline (or static) bytecode instrumentation and class loading to collect code coverage metrics; GPLv2 licensed.\n* [JaCoCo](http://eclemma.org/jacoco/) - Framework that enables collection of code coverage metrics, using both offline and runtime bytecode instrumentation; prominently used by EclEmma, the Eclipse code-coverage plugin.\n\n## Command-line Argument Parsers \n[命令行参数解析]\n\n*Libraries that make it easy to parse command line options, arguments, etc.*\n\n* [args4j](http://args4j.kohsuke.org/) - Small library to parse command like arguments similar to javac.\n* [JCommander](http://jcommander.org/) - Command line arguments parsing framework with custom types and validation via implementing interfaces.\n* [JOpt Simple](http://pholser.github.io/jopt-simple/) - Simple parser that uses the POSIX getopt() and GNU getopt_long() syntaxes. Does not use annotations, uses a fluent API instead.\n\n## Compiler-compiler \n[内嵌编译器]\n\n*Frameworks that help to create parsers, interpreters or compilers.*\n\n* [ANTLR](http://www.antlr.org/) - Complex full-featured framework for top-down parsing.\n* [JFlex](http://jflex.de/) - A lexical analyzer generator.\n\n## Configuration \n[配置相关]\n\n*Libraries that provide external configuration.*\n\n* [config](https://github.com/typesafehub/config) - Configuration library for JVM languages.\n* [owner](https://github.com/lviggiano/owner) - Reduces boilerplate of properties.\n\n## Constraint Satisfaction Problem Solver \n[优化解决问题]\n\n*Libraries that help on implementing optimization and satisfiability problems.*\n\n* [Choco](http://choco-solver.org/) - Off-the-shelf constraint satisfaction problem solver, which uses constraint programming techniques.\n* [JaCoP](https://github.com/radsz/jacop/) - Includes an interface for the FlatZinc language, enabling it to execute MiniZinc models.\n* [OptaPlanner](http://www.optaplanner.org/) - Business planning and resource scheduling optimization solver.\n\n## Continuous Integration \n[持续集成]\n\n*Tools which support continuously building, testing and releasing applications.*\n\n* [Bamboo](https://www.atlassian.com/software/bamboo) - Atlassian's solution with good integration of their other products. You can either apply for an open-source license or buy it.\n* [fabric8](http://fabric8.io/) - Integration platform for containers.\n* [Go](https://www.thoughtworks.com/go/) - ThoughtWork's open-source solution.\n* [Jenkins](http://jenkins-ci.org/) - Provides server-based deployment services.\n* [TeamCity](http://www.jetbrains.com/teamcity/) - JetBrain's CI solution with a free version.\n* [Travis](https://travis-ci.org) - Hosted service often used for open-source projects.\n\n## CSV \n[CSV]\n\n*Frameworks and libraries that simplify reading/writing CSV data.*\n\n* [opencsv](http://opencsv.sourceforge.net) - Simple CSV parser with a commercial-friendly license.\n* [Super CSV](http://super-csv.github.io/super-csv/) - Powerful CSV parser with support for Dozer, Joda-Time and Java 8.\n* [uniVocity-parsers](https://github.com/uniVocity/univocity-parsers) - One of the fastest and most feature-complete CSV. Also comes with parsers for TSV and fixed width records.\n\n## Database \n[数据库]\n\n*Everything which simplifies interactions with the database.*\n\n* [Apache Hive](https://hive.apache.org/) - Data warehouse infrastructure built on top of Hadoop.\n* [Apache Phoenix](http://phoenix.apache.org/) - High performance relational database layer over HBase for low latency applications.\n* [Chronicle Map](https://github.com/OpenHFT/Chronicle-Map) - Efficient in-memory (opt. persisted to disk) off-heap key-value store.\n* [eXist](https://github.com/eXist-db/exist) - A NoSQL document database and application platform.\n* [FlexyPool](https://github.com/vladmihalcea/flexy-pool) - Brings metrics and failover strategies to the most common connection pooling solutions.\n* [Flyway](https://flywaydb.org/) - Simple database migration tool.\n* [H2](http://h2database.com/) - Small SQL Database notable for its in-memory functionality.\n* [HikariCP](https://github.com/brettwooldridge/HikariCP) - High performance JDBC connection pool.\n* [JDBI](http://jdbi.org/) - Convenient abstraction of JDBC.\n* [Jedis](https://github.com/xetorthio/jedis) - A small client for interaction with redis, with methods for commands.\n* [jOOQ](http://www.jooq.org/) - Generates typesafe code based on SQL schema.\n* [Liquibase](http://www.liquibase.org/) - Database-independent library for tracking, managing and applying database schema changes.\n* [MapDB](http://www.mapdb.org/) - Embedded database engine that provides concurrent collections backed on disk or in off-heap memory.\n* [Presto](https://github.com/prestodb/presto) - Distributed SQL query engine for big data.\n* [Querydsl](http://www.querydsl.com/) - Typesafe unified queries.\n* [Realm](https://github.com/realm/realm-java) - Mobile database to run directly inside phones, tablets or wearables.\n* [Redisson](https://github.com/mrniko/redisson) - Allows for distributed and scalable data structures on top of a Redis server.\n* [Speedment](https://github.com/speedment/speedment) - A database access library that utilizes the Java 8 Stream API for querying.\n* [Vibur DBCP](http://www.vibur.org/) - JDBC connection pool library which offers advanced performance monitoring capabilities.\n\n## Data structures \n[数据结构]\n\n*Efficient and specific data structures.*\n\n* [Apache Avro](https://avro.apache.org/) - Data interchange format featuring among others: dynamic typing, untagged data, absence of manually assigned IDs.\n* [Apache Orc](https://orc.apache.org/) - Fast and efficient columnar storage format for hadoop based workloads.\n* [Apache Parquet](http://parquet.apache.org/) - Columnar storage format based on assembly algorithms from the Dremel paper by Google.\n* [Apache Thrift](https://thrift.apache.org/) - Data interchange format that originated at Facebook.\n* [Persistent Collection](http://pcollections.org/) - Persistent and immutable analogue of the Java Collections Framework.\n* [Protobuf](https://github.com/google/protobuf) - Google's data interchange format.\n* [SBE](https://github.com/real-logic/simple-binary-encoding) - Simple Binary Encoding, one of the fastest message formats around.\n* [Wire](https://github.com/square/wire) - Clean, lightweight protocol buffers.\n\n## Date and Time \n[日期和时间]\n\n*Libraries related to handling date and time.*\n\n* [Almanac Converter](https://github.com/hypotemoose/almanac-converter) - Simple conversion between different calendar systems.\n* [Joda-Time](http://www.joda.org/joda-time/) - De facto standard date/time-library before Java 8.\n* [ThreeTenBP](https://github.com/ThreeTen/threetenbp) - Port of JSR 310 (java.time package) by the author of Joda-Time.\n* [Time4J](https://github.com/MenoData/Time4J) - Advanced date and time library.\n\n## Dependency Injection \n[依赖注入]\n\n*Libraries that help to realize the [Inversion of Control](https://en.wikipedia.org/wiki/Inversion_of_control) paradigm.*\n\n* [Apache DeltaSpike](https://deltaspike.apache.org/) - CDI extension framework.\n* [Dagger2](http://google.github.io/dagger/) - Compile-time injection framework without reflection.\n* [Guice](https://github.com/google/guice) - Lightweight but powerful framework that completes Dagger.\n* [HK2](https://hk2.java.net) - Light-weight and dynamic dependency injection framework.\n\n## Development \n[开发]\n\n*Augmentation of the development process at a fundamental level.*\n\n* [ADT4J](https://github.com/sviperll/adt4j) - JSR-269 code generator for algebraic data types.\n* [AspectJ](https://eclipse.org/aspectj/) - Seamless aspect-oriented programming extension.\n* [Auto](https://github.com/google/auto) - Collection of source code generators.\n* [DCEVM](http://dcevm.github.io/) - Modification of the JVM that allows unlimited redefinition of loaded classes at runtime.\n* [HotswapAgent](https://github.com/HotswapProjects/HotswapAgent) - Unlimited runtime class and resource redefinition.\n* [Immutables](http://immutables.github.io/) - Scala-like case classes.\n* [JHipster](https://github.com/jhipster/generator-jhipster) - Yeoman source code generator to create applications based on Spring Boot and AngularJS.\n* [JRebel](http://zeroturnaround.com/software/jrebel/) - Commercial software that instantly reloads code and configuration changes without redeploys.\n* [Lombok](https://projectlombok.org/) - Code-generator which aims to reduce the verbosity.\n* [Spring Loaded](https://github.com/spring-projects/spring-loaded) - Class reloading agent.\n\n## Distributed Applications \n[分布式应用]\n\n*Libraries and frameworks for writing distributed and fault-tolerant applications.*\n\n* [Akka](http://akka.io) - Toolkit and runtime for building concurrent, distributed, and fault tolerant event-driven applications.\n* [Apache Storm](http://storm.apache.org/) - Realtime computation system.\n* [Apache ZooKeeper](http://zookeeper.apache.org/) - Coordination service with distributed configuration, synchronization, and naming registry for large distributed systems.\n* [Atomix](http://atomix.io/atomix/) - Fault-tolerant distributed coordination framework.\n* [Axon Framework](http://www.axonframework.org/) - Framework for creating CQRS applications.\n* [Copycat](http://atomix.io/copycat/) - Fault-tolerant state machine replication framework.\n* [Hazelcast](http://hazelcast.org/) - Highly scalable in-memory datagrid.\n* [Hystrix](https://github.com/Netflix/Hystrix) - Provides latency and fault tolerance.\n* [JGroups](http://www.jgroups.org/) - Toolkit for reliable messaging and creating clusters.\n* [Lagom](https://www.lightbend.com/lagom) - Framework for creating microservice-based systems.\n* [Orbit](http://www.orbit.cloud/) - Virtual Actors, adding another level of abstraction to traditional actors.\n* [Quasar](http://www.paralleluniverse.co/quasar/) - Lightweight threads and actors for the JVM.\n\n## Distributed Databases \n[分布式数据库]\n\n*Databases in a distributed system that appear to applications as a single data source.*\n\n* [Apache Cassandra](http://cassandra.apache.org) - Column-oriented and providing high availability with no single point of failure.\n* [Apache HBase](http://hbase.apache.org) - Hadoop database for big data.\n* [Druid](http://druid.io) - Real-time and historical OLAP data store that excel at aggregation and approximation queries.\n* [Infinispan](http://infinispan.org/) - Highly concurrent key/value datastore used for caching.\n* [OpenTSDB](http://opentsdb.net) - Scalable and distributed time series database written on top of Apache HBase.\n\n## Distribution \n[原生分布式]\n\n*Tools which handle the distribution of applications in native formats.*\n\n* [Bintray](https://bintray.com/) - Version control for binaries which handles the publishing. Can also be used with Maven or Gradle and has a free plan for open-source software or several business plans.\n* [Boxfuse](https://boxfuse.com) - Deployment of JVM application to AWS using the principles of Immutable Infrastructure.\n* [Capsule](http://www.capsule.io/) - Simple and powerful packaging and deployment. A fat JAR on steroids or a \"Docker for Java\" that supports JVM-optimized containers.\n* [Central Repository](http://search.maven.org/) - Largest binary component repository available as a free service to the open-source community. Default used by Apache Maven and available in all other build tools.\n* [IzPack](http://izpack.org/) - Setup authoring tool for cross-platform deployments.\n* [JitPack](https://jitpack.io/) - Easy to use package repository for GitHub. Builds Maven/Gradle projects on demand and publishes ready-to-use packages.\n* [Nexus](http://www.sonatype.com/nexus/solution-overview) - Binary management with proxy and caching capabilities.\n* [packr](https://github.com/libgdx/packr/) - Packs JARs, assets and the JVM for native distribution on Windows, Linux and Mac OS X.\n\n## Document Processing \n[文档处理]\n\n*Libraries that assist with processing office document formats.*\n\n* [Apache POI](http://poi.apache.org/) - Supports OOXML (XLSX, DOCX, PPTX) as well as OLE2 (XLS, DOC or PPT).\n* [documents4j](http://documents4j.com) - API for document format conversion using third-party converters such as MS Word.\n* [docx4j](http://www.docx4java.org/trac/docx4j) - Creating and manipulating Microsoft Open XML files.\n\n## Formal Verification \n[格式校验]\n\n*Formal-methods tools: proof assistants, model checking, symbolic execution etc.*\n\n* [CATG](https://github.com/ksen007/janala2) - Concolic unit testing engine. Automatically generates unit tests using formal methods.\n* [Checker Framework](http://types.cs.washington.edu/checker-framework/) - Pluggable type systems. Includes nullness types, physical units, immutability types and more.\n* [Daikon](http://plse.cs.washington.edu/daikon/) - Daikon detects likely program invariants and can generate JML specs based on those invariats.\n* [Java Path Finder (JPF)](http://babelfish.arc.nasa.gov/trac/jpf) - JVM formal verification tool containing a model checker and more. Created by NASA.\n* [JMLOK 2.0](http://massoni.computacao.ufcg.edu.br/home/jmlok) - Detects nonconformances between code and JML specification through the feedback-directed random tests generation, and suggests a likely cause for each nonconformance detected.\n* [KeY](http://key-project.org/) - The KeY System is a formal software development tool that aims to integrate design, implementation, formal specification, and formal verification of object-oriented software as seamlessly as possible. Uses JML for specification and symbolic execution for verification.\n* [OpenJML](http://openjml.github.io/) - Translates JML specifications into SMT-LIB format and passes the proof problems implied by the program to backend solvers.\n\n## Functional Programming \n[函数式编程]\n\n*Libraries that facilitate functional programming.*\n\n* [cyclops-react](https://github.com/aol/cyclops-react) - Monad and stream utilities, comprehensions, pattern matching, functional extensions for all JDK collections, future streams, trampolines and much more.\n* [derive4j](https://github.com/derive4j/derive4j) - Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching, morphisms.\n* [Fugue](https://bitbucket.org/atlassian/fugue) - Functional extensions to Guava.\n* [Functional Java](http://www.functionaljava.org) - Implements numerous basic and advanced programming abstractions that assist composition-oriented development.\n* [Javaslang](http://www.javaslang.io/) - Functional component library that provides persistent data types and functional control structures.\n* [jOOλ](https://github.com/jOOQ/jOOL) - Extension to Java 8 which aims to fix gaps in lambda, providing numerous missing types and a rich set of sequential Stream API additions.\n\n## Game Development \n[游戏开发]\n\n*Frameworks that support the development of games.*\n\n* [jMonkeyEngine](https://jmonkeyengine.org/) - Game engine for modern 3D development.\n* [libGDX](https://libgdx.badlogicgames.com/) - All-round cross-platform, high-level framework.\n* [LWJGL](https://www.lwjgl.org/) - Robust framework that abstracts libraries like OpenGL/CL/AL.\n\n## Geospatial \n[地理空间]\n\n*Libraries for working with geospatial data and algorithms.*\n\n* [Apache SIS](http://sis.apache.org/) - Library for developing geospatial applications.\n* [Geo](https://github.com/davidmoten/geo/) - GeoHash utilities in Java.\n* [Geotoolkit.org](http://www.geotoolkit.org/) - Library for developing geospatial applications. Built on top of the Apache SIS project.\n* [GeoTools](http://geotools.org/) - Library that provides tools for geospatial data.\n* [H2GIS](http://www.h2gis.org/) - A spatial extension of the H2 database.\n* [Jgeohash](http://astrapi69.github.io/jgeohash/) - Library that can assist Java developers in using the GeoHash algorithm.\n* [Mapsforge](https://github.com/mapsforge/mapsforge/) - Software for the rendering of maps based on OpenStreetMap data.\n* [Spatial4j](https://github.com/locationtech/spatial4j/) - General purpose spatial/geospatial ASL licensed open-source Java library.\n\n## GUI \n[图形用户界面]\n\n*Libraries to create modern graphical user interfaces.*\n\n* [JavaFX](http://www.oracle.com/technetwork/java/javase/overview/javafx-overview-2158620.html) - The successor of Swing.\n* [Scene Builder](http://gluonhq.com/open-source/scene-builder/) - Visual layout tool for JavaFX applications.\n* [SWT](http://www.eclipse.org/swt/) - The Standard Widget Toolkit (SWT) is a graphical widget toolkit for use with the Java platform.\n\n## High Performance \n[高性能计算]\n\n*Everything about high performance computation, from collections to specific libraries.*\n\n* [Agrona](https://github.com/real-logic/Agrona) - Data structures and utility methods that are common in high-performance applications.\n* [Disruptor](http://lmax-exchange.github.io/disruptor/) - Inter-thread messaging library.\n* [fastutil](http://fastutil.di.unimi.it/) - Fast and compact type-specific collections.\n* [GS Collections](https://github.com/goldmansachs/gs-collections) - Collection framework inspired by Smalltalk.\n* [HPPC](http://labs.carrotsearch.com/hppc.html) - Primitive collections.\n* [JCTools](https://github.com/JCTools/JCTools) - Concurrency tools currently missing from the JDK.\n* [Koloboke](https://github.com/OpenHFT/Koloboke) - Hash sets and hash maps.\n\n## IDE \n[开发工具]\n\n*Integrated development environments that try to simplify several aspects of development.*\n\n* [Eclipse](http://www.eclipse.org/) - Established, open-souce project with support for lots of plugins and languages.\n* [IntelliJ IDEA](http://www.jetbrains.com/idea/) - Supports a lot of JVM languages and provides good options for Android development. The commercial edition targets the enterprise sector.\n* [NetBeans](https://netbeans.org/) - Provides integration for several Java SE and EE features from database access to HTML5.\n\n## Imagery \n[图形处理]\n\n*Libraries that assist with the creation, evaluation or manipulation of graphical images.*\n\n* [Imgscalr](https://github.com/thebuzzmedia/imgscalr) - Simple and efficient hardware-accelerated image-scaling library implemented in pure Java 2D.\n* [Thumbnailator](https://github.com/coobird/thumbnailator) - Thumbnailator is a high-quality thumbnail generation library for Java.\n* [TwelveMonkeys](https://github.com/haraldk/TwelveMonkeys) - Collection of plugins which extend the number of supported image file formats.\n* [ZXing](https://github.com/zxing/zxing) - Multi-format 1D/2D barcode image processing library.\n\n## JSON \n[JSON]\n\n*Libraries for serializing and deserializing JSON to and from Java objects.*\n\n* [Genson](http://owlike.github.io/genson/) - Powerful and easy to use Java to JSON conversion library.\n* [Gson](https://github.com/google/gson) - Serializes objects to JSON and vice versa. Good performance with on-the-fly usage.\n* [Jackson](http://wiki.fasterxml.com/JacksonHome) - Similar to GSON but has performance gains if you need to instantiate the library more often.\n* [Jackson-datatype-money](https://github.com/zalando/jackson-datatype-money) - Open-source Jackson module to support JSON serialization and deserialization of JavaMoney data types.\n* [JSON-io](https://github.com/jdereg/json-io) - Convert Java to JSON. Convert JSON to Java. Pretty print JSON. Java JSON serializer.\n* [LoganSquare](https://github.com/bluelinelabs/LoganSquare) - JSON parsing and serializing library based on Jackson's streaming API. Outperforms GSON \u0026 Jackson's library.\n\n## JSON Processing \n[JSON处理]\n\n*Libraries for processing data in JSON format.*\n\n* [fastjson](https://github.com/alibaba/fastjson) - Very fast processor with no additional dependencies and full data binding.\n* [Jolt](https://github.com/bazaarvoice/jolt) - JSON to JSON transformation tool.\n* [JsonPath](https://github.com/jayway/JsonPath) - Extract data from JSON using XPATH like syntax.\n* [JsonSurfer](https://github.com/jsurfer/JsonSurfer) - Streaming JsonPath processor dedicated to processing big and complicated JSON data.\n\n## JVM and JDK \n[JVM和JDK]\n\n*Current implementations of the JVM/JDK.*\n\n* [Avian](https://github.com/ReadyTalk/avian) - JVM with both a JIT \u0026 AOT modes. Includes an iOS port.\n* [JDK 9](https://jdk9.java.net/) - Early access releases of JDK 9.\n* [OpenJDK](http://openjdk.java.net/) - Open-source implementation for Linux.\n* [ParparVM](https://github.com/codenameone/CodenameOne/tree/master/vm) - VM with non-blocking concurrent GC for iOS.\n* [Zulu OpenJDK 9](http://zulu.org/zulu-9-pre-release-downloads/) - Early access OpenJDK 9 builds for Windows, Linux, and Mac OS X.\n* [Zulu OpenJDK](http://www.azul.com/downloads/zulu/) - OpenJDK builds for Windows, Linux, and Mac OS X through Java 8.\n\n## Logging \n[日志]\n\n*Libraries that log the behavior of an application.*\n\n* [Apache Log4j 2](http://logging.apache.org/log4j/) - Complete rewrite with a powerful plugin and configuration architecture.\n* [Graylog](https://www.graylog.org/) - Open-source aggregator suited for extended role and permission management.\n* [Kibana](https://www.elastic.co/products/kibana) - Analyzes and visualizes log files. Some features require payment.\n* [Logback](http://logback.qos.ch/) - Robust logging library with interesting configuration options via Groovy.\n* [Logbook](https://github.com/zalando/logbook) - Extensible, open-source library for HTTP request and response logging.\n* [Logstash](https://www.elastic.co/products/logstash) - Tool for managing log files.\n* [SLF4J](http://www.slf4j.org/) - Abstraction layer which is to be used with an implementation.\n* [tinylog](http://www.tinylog.org/) - Lightweight logging framework with static logger class.\n\n## Machine Learning \n[机器学习]\n\n*Tools that provide specific statistical algorithms which allow learning from data.*\n\n* [Apache Flink](https://flink.apache.org/) - Fast and reliable large-scale data processing engine.\n* [Apache Mahout](https://mahout.apache.org/) - Scalable algorithms focused on collaborative filtering, clustering and classification.\n* [Apache Spark](http://spark.apache.org/) - Data analytics cluster computing framework.\n* [DeepDive](http://deepdive.stanford.edu) - Creates structured information from unstructured data and integrates it into an existing database.\n* [Deeplearning4j](http://deeplearning4j.org/) - Distributed and multi-threaded deep learning library.\n* [H2O](http://www.h2o.ai/) - Analytics engine for statistics over big data.\n* [JSAT](https://github.com/EdwardRaff/JSAT) - Algorithms for pre-processing, classification, regression, and clustering with support for multi-threaded execution.\n* [Oryx 2](https://github.com/OryxProject/oryx) - A framework for building real-time large scale machine learning applications, which also includes end-to-end applications for collaborative filtering, classification, regression, and clustering.\n* [Smile](http://haifengl.github.io/smile/) - The Statistical Machine Intelligence and Learning Engine provides a set of machine learning algorithms and a visualization library.\n* [Weka](http://www.cs.waikato.ac.nz/ml/weka/) - Collection of algorithms for data mining tasks ranging from pre-processing to visualization.\n\n## Messaging \n[消息组件]\n\n*Tools that help to send messages between clients in order to ensure protocol independency.*\n\n* [Aeron](https://github.com/real-logic/Aeron) - Efficient reliable unicast and multicast message transport.\n* [Apache ActiveMQ](http://activemq.apache.org/) - Message broker that implements JMS and converts synchronous to asynchronous communication.\n* [Apache Camel](http://camel.apache.org/) - Glues together different transport APIs via Enterprise Integration Patterns.\n* [Apache Kafka](http://kafka.apache.org/) - High-throughput distributed messaging system.\n* [Hermes](http://hermes.allegro.tech) - Fast and reliable message broker built on top of Kafka.\n* [Nakadi](https://github.com/zalando/nakadi) - Provides a RESTful API on top of Kafka.\n* [JeroMQ](https://github.com/zeromq/jeromq) - Implementation of ZeroMQ.\n* [Smack](https://github.com/igniterealtime/Smack/) - Cross-platform XMPP client library.\n* [RocketMQ](https://github.com/alibaba/RocketMQ) - A fast, reliable, and scalable distributed messaging platform.\n\n## Miscellaneous \n[混杂的]\n\n*Everything else.*\n\n* [Codename One](https://www.codenameone.com/) - Cross platform solution for writing native mobile (iOS, Android, etc.)\n* [Design Patterns](https://github.com/iluwatar/java-design-patterns) - Implementation and explanation of the most common design patterns.\n* [Failsafe](https://github.com/jhalterman/failsafe) - Simple failure handling with retries and circuit breakers.\n* [J2ObjC](https://github.com/google/j2objc) - Java to Objective-C translator for porting Android libraries to iOS.\n* [jabba](https://github.com/shyiko/jabba) - Java Version Manager inspired by nvm.\n* [JBake](http://jbake.org) - Static website generator.\n* [Jimfs](https://github.com/google/jimfs) - In-memory file system.\n* [JPad](http://jpad.io/) - Snippet runner.\n* [Lanterna](https://github.com/mabe02/lanterna) - Easy console text GUI library similar to curses.\n* [LightAdmin](http://lightadmin.org/) - Pluggable CRUD UI library for rapid application development.\n* [Modern Java - A Guide to Java 8](https://github.com/winterbe/java8-tutorial) - Popular Java 8 guide.\n* [OpenRefine](http://openrefine.org/) - Tool for working with messy data: cleaning, transforming, extending it with web services and linking it to databases.\n* [TypeTools](https://github.com/jhalterman/typetools) - Tools for resolving generic types.\n\n## Monitoring \n[监控]\n\n*Tools that monitor applications in production.*\n\n* [AppDynamics](https://www.appdynamics.com/) - Commercial performance monitor.\n* [JavaMelody](https://github.com/javamelody/javamelody) - Performance monitoring and profiling.\n* [jmxtrans](https://github.com/jmxtrans/jmxtrans/) - Tool to connect to multiple JVMs and to query them for their attributes via JMX. Its query language is based on JSON, which allows non-Java programmers to access the JVMs attributes. Likewise, this tool supports different output writes, including Graphite, Ganglia, StatsD, among others.\n* [Jolokia](https://jolokia.org/) - JMX over REST.\n* [Kamon](http://www.kamon.io/) - Tool for monitoring applications running on the JVM.\n* [Metrics](http://metrics.dropwizard.io/) - Expose metrics via JMX or HTTP and can send them to a database.\n* [New Relic](http://newrelic.com/) - Commercial performance monitor.\n* [Prometheus](https://prometheus.io/) - Provides a multi-dimensional data model, DSL, autonomous server nodes and much more.\n* [SPM](https://sematext.com/spm/) - Commercial performance monitor with distributing transaction tracing for JVM apps.\n* [Takipi](https://www.takipi.com/) - Commercial in-production error monitoring and debugging.\n* [Stagemonitor](https://github.com/stagemonitor/stagemonitor) - Open source performance monitoring and transaction tracing for JVM apps.\n* [Glowroot](https://glowroot.org/) - Open source Java APM.\n* [Pinpoint](https://github.com/naver/pinpoint) - Open source APM tool.\n\n## Native \n[系统库交互]\n\n*For working with platform-specific native libraries.*\n\n* [JNA](https://github.com/java-native-access/jna) - Work with native libraries without writing JNI. Also provides interfaces to common system libraries.\n* [JNR](https://github.com/jnr/jnr-ffi) - Work with native libraries without writing JNI. Also provides interfaces to common system libraries. Same goals as JNA, but faster, and serves as the basis for the upcoming [Project Panama](http://openjdk.java.net/projects/panama/).\n\n## Natural Language Processing \n[自然语言处理]\n\n*Libraries that specialize on processing text.*\n\n* [CoreNLP](http://nlp.stanford.edu/software/corenlp.shtml) - Stanford's CoreNLP provides a set of fundamental tools for tasks like tagging, named entity recognition, sentiment analysis and many more.\n* [DKPro](https://dkpro.github.io/) - A collection of re-usable NLP tools for linguistic pre-processing, machine learning, lexical resources, etc.\n* [LingPipe](http://alias-i.com/lingpipe/) - Toolkit for a variety of tasks ranging from POS tagging to sentiment analysis.\n\n## Networking \n[网络]\n\n*Libraries for network programming.*\n\n* [Async Http Client](https://github.com/AsyncHttpClient/async-http-client) - Asynchronous HTTP and WebSocket client library.\n* [Comsat](https://github.com/puniverse/comsat) - Integrates standard Java web-related APIs with Quasar fibers and actors.\n* [Finagle](https://github.com/twitter/finagle) - Extensible RPC system used to construct high-concurrency servers. It implements uniform client and server APIs for several protocols, and is protocol agnostic, which simplifies the implementation of new protocols.\n* [Grizzly](https://grizzly.java.net/) - NIO framework. Used as a network layer in Glassfish.\n* [gRPC](https://github.com/grpc/grpc-java) - RPC framework based on protobuf and HTTP/2.\n* [Netty](http://netty.io/) - Framework for building high performance network applications.\n* [Nifty](https://github.com/facebook/nifty) - Implementation of Thrift clients and servers on Netty.\n* [OkHttp](http://square.github.io/okhttp/) - HTTP+SPDY client.\n* [Riptide](https://github.com/zalando/riptide) - Client-side response routing for Spring's RestTemplate.\n* [Undertow](http://undertow.io/) - Web server providing both blocking and non-blocking API’s based on NIO. Used as a network layer in WildFly.\n* [urnlib](https://github.com/slub/urnlib) - Java library for representing, parsing and encoding URNs as in RFC 2141.\n\n## ORM \n[对象关系映射]\n\n*APIs which handle the persistence of objects.*\n\n* [Ebean](http://ebean-orm.github.io/) - Provides simple and fast data access.\n* [EclipseLink](https://www.eclipse.org/eclipselink/) - Supports a number of persistence standards: JPA, JAXB, JCA and SDO.\n* [Hibernate](http://hibernate.org/orm/) - Robust and widely used with an active community.\n* [MyBatis](http://www.mybatis.org/mybatis-3/) - Couples objects with stored procedures or SQL statements.\n\n## PDF \n[PDF]\n\n*Everything that helps with the creation of PDF files.*\n\n* [Apache FOP](http://xmlgraphics.apache.org/fop/) - Creates PDF from XSL-FO.\n* [Apache PDFBox](http://pdfbox.apache.org/) - Toolbox for creating and manipulating PDF.\n* [Dynamic Jasper](http://dynamicjasper.com/) - Abstraction layer to JasperReports.\n* [DynamicReports](http://dynamicreports.org/) - Simplifies JasperReports.\n* [flyingsaucer](https://github.com/flyingsaucerproject/flyingsaucer) - XML/XHTML and CSS 2.1 renderer.\n* [iText](http://itextpdf.com/) - Creates PDF files programmatically but requires a license for commercial purposes.\n* [JasperReports](http://community.jaspersoft.com/project/jasperreports-library) - Complex reporting engine.\n\n## Performance analysis \n[性能分析]\n\n*Tools for performance analysis, profiling and benchmarking.*\n\n* [honest-profiler](https://github.com/RichardWarburton/honest-profiler) - An low-overhead, bias-free sampling profiler.\n* [jHiccup](https://github.com/giltene/jHiccup) - Logs and records platform JVM stalls.\n* [JProfiler](https://www.ej-technologies.com/products/jprofiler/overview.html) - Commercial profiler.\n* [LatencyUtils](https://github.com/LatencyUtils/LatencyUtils) - Utilities for latency measurement and reporting.\n* [XRebel](http://zeroturnaround.com/software/xrebel/) - A commercial profiler for Java Web applications.\n* [YourKit Java Profiler](https://www.yourkit.com/features/) - Commercial profiler.\n\n## Platform \n[平台]\n\n*Frameworks that are suites of multiple libraries encompassing several categories.*\n\n* [Spring](http://projects.spring.io/spring-framework/) - Provides many packages ranging from dependency injection to aspect-oriented programming to security.\n\n## Reactive libraries \n[响应式编程库]\n\n*Libraries for developing reactive applications.*\n\n* [Reactive Streams](https://github.com/reactive-streams/reactive-streams-jvm/) - Provide a standard for asynchronous stream processing with non-blocking backpressure.\n* [Reactor](http://projectreactor.io/) - Library for building reactive fast-data applications.\n* [RxJava](https://github.com/ReactiveX/RxJava) - Library for composing asynchronous and event-based programs using observable sequences from the JVM.\n* [vert.x](http://vertx.io/) - Polyglot event-driven application framework.\n\n## REST Frameworks \n[REST框架]\n\n*Frameworks specifically for creating RESTful services.*\n\n* [Dropwizard](https://dropwizard.github.io/dropwizard/) - Opinionated framework for setting up modern web applications with Jetty, Jackson, Jersey and Metrics.\n* [Feign](https://github.com/Netflix/feign) - HTTP client binder inspired by Retrofit, JAXRS-2.0, and WebSocket.\n* [Jersey](https://jersey.java.net/) - JAX-RS reference implementation.\n* [Microserver](https://github.com/aol/micro-server) — A convenient extensible Microservices plugin system for Spring \u0026 Spring Boot, with over 30 plugins and growing, that supports both micro-monolith and pure microservices styles.\n* [RAML](http://raml.org/) - Modeling language to generate REST APIs with contract first.\n* [Rapidoid](http://www.rapidoid.org/) - A simple, secure and extremely fast framework consisting of embedded HTTP server, GUI components and dependency injection.\n* [rest.li](https://github.com/linkedin/rest.li) - Framework for building robust, scalable RESTful architectures using type-safe bindings and asynchronous, non-blocking IO with an end-to-end developer workflow that promotes clean practices, uniform interface design and consistent data modeling.\n* [RESTEasy](http://resteasy.jboss.org/) - Fully certified and portable implementation of the JAX-RS specification.\n* [RestExpress](https://github.com/RestExpress/RestExpress) - Thin wrapper on the JBoss Netty HTTP stack to provide scaling and performance.\n* [Restlet Framework](https://github.com/restlet/restlet-framework-java/) - Pioneering framework with powerful routing and filtering capabilities, unified client and server API.\n* [Retrofit](http://square.github.io/retrofit/) - Type-safe REST client.\n* [Spark](http://sparkjava.com/) - Sinatra inspired framework.\n* [Swagger](http://swagger.io/) - Swagger is a specification and complete framework implementation for describing, producing, consuming, and visualizing RESTful web services.\n\n## Science \n[科学计算]\n\n*Libraries for scientific computing, analysis and visualization.*\n\n* [DataMelt](http://jwork.org/dmelt/) - Environment for scientific computation, data analysis and data visualization.\n* [GraphStream](http://graphstream-project.org/) - Library for modeling and analysis of dynamic graphs.\n* [JGraphT](https://github.com/jgrapht/jgrapht) - Graph library that provides mathematical graph-theory objects and algorithms.\n* [JGraphX](https://github.com/jgraph/jgraphx) - Library for visualisation (mainly Swing) and interaction with node-edge graphs.\n\n## Search \n[搜索]\n\n*Engines which index documents for search and analysis.*\n\n* [Apache Lucene](https://lucene.apache.org/) - High-performance, full-featured cross-platform text search engine library.\n* [Apache Solr](http://lucene.apache.org/solr/) - Enterprise search engine optimized for high volume traffic.\n* [Elasticsearch](https://www.elastic.co/) - Distributed, multitenant-capable full-text search engine with a RESTful web interface and schema-free JSON documents.\n\n## Security \n[安全]\n\n*Libraries that handle security, authentication, authorization or session management.*\n\n* [Apache Shiro](http://shiro.apache.org/) - Performs authentication, authorization, cryptography and session management.\n* [Bouncy Castle](https://www.bouncycastle.org/java.html) - All-purpose cryptographic library. JCA provider, wide range of functions from basic helpers to PGP/SMIME operations.\n* [Cryptomator](https://cryptomator.org/) - Multiplatform transparent client-side encryption of files in the cloud.\n* [Google Keyczar](https://github.com/google/keyczar) - Easy to use, yet safe encryption framework with key versioning.\n* [Keycloak](http://keycloak.jboss.org/) - Integrated SSO and IDM for browser apps and RESTful web services.\n* [OACC](http://oaccframework.org/) - Provides permission-based authorization services.\n* [pac4j](https://github.com/pac4j/pac4j) - Security engine.\n* [PicketLink](http://picketlink.org/) - Umbrella project for security and identity management.\n\n## Serialization \n[序列化]\n\n*Libraries that handle serialization with high efficiency.*\n\n* [FlatBuffers](https://github.com/google/flatbuffers) - Memory efficient serialization library that can access serialized data without unpacking and parsing it.\n* [FST](https://github.com/RuedigerMoeller/fast-serialization) - JDK compatible high performance object graph serialization.\n* [Kryo](https://github.com/EsotericSoftware/kryo) - Fast and efficient object graph serialization framework.\n* [MessagePack](https://github.com/msgpack/msgpack-java) - Efficient binary serialization format.\n\n## Server \n[服务器]\n\n*Servers which are specifically used to deploy applications.*\n\n* [Apache Tomcat](http://tomcat.apache.org/) - Robust all-round server for Servlet and JSP.\n* [Apache TomEE](http://tomee.apache.org/) - Tomcat plus Java EE.\n* [Jetty](http://www.eclipse.org/jetty/) - Lightweight, small server, often embedded in projects.\n* [WebSphere Liberty](https://developer.ibm.com/wasdev/) - Lightweight, modular server developed by IBM.\n* [WildFly](http://www.wildfly.org/) - Formerly known as JBoss and developed by Red Hat with extensive Java EE support.\n\n## Template Engine \n[模板引擎]\n\n*Tools which substitute expressions in a template.*\n\n* [Handlebars.java](http://jknack.github.io/handlebars.java/) - Logic-less and semantic Mustache templates.\n* [Thymeleaf](http://www.thymeleaf.org/) - Aims to be a substitute for JSP and works for XML files in general.\n\n## Testing \n[测试]\n\n*Tools that test from model to the view.*\n\n* [Apache JMeter](http://jmeter.apache.org/) - Functional testing and performance measurements.\n* [Arquillian](http://arquillian.org/) - Integration and functional testing platform for Java EE containers.\n* [AssertJ](http://joel-costigliola.github.io/assertj/) - Fluent assertions that improve readability.\n* [Awaitility](https://github.com/jayway/awaitility) - DSL for synchronizing asynchronous operations.\n* [Citrus](http://citrusframework.org/) - Integration testing framework with focus on client- and serverside messaging.\n* [ConcurrentUnit](https://github.com/jhalterman/concurrentunit) - Toolkit for testing multi-threaded and asynchronous applications.\n* [Cucumber](https://github.com/cucumber/cucumber-jvm) - BDD testing framework.\n* [Cukes-REST](https://github.com/ctco/cukes-rest) - A collection of Gherkin steps for REST-service testing using Cucumber.\n* [Gatling](http://gatling.io/) - Load testing tool designed for ease of use, maintainability and high performance.\n* [GreenMail](http://www.icegreen.com/greenmail/) - In-memory email server for integration testing. Supports SMTP, POP3 and IMAP including SSL.\n* [Hamcrest](http://hamcrest.org/JavaHamcrest/) - Matchers that can be combined to create flexible expressions of intent.\n* [J8Spec](https://github.com/j8spec/j8spec/) - J8Spec is a library that allows tests written in Java to follow the BDD style introduced by RSpec and Jasmine.\n* [JBehave](http://jbehave.org/) - Framework for Behavioural Driven Development.\n* [JGiven](http://jgiven.org) - Developer-friendly BDD testing framework compatible with JUnit and TestNG.\n* [JMockit](http://jmockit.org/) - Mocks static, final methods and more.\n* [junit-dataprovider](https://github.com/TNG/junit-dataprovider) - A TestNG like dataprovider runner for JUnit.\n* [JUnitParams](https://pragmatists.github.io/JUnitParams/) - Creation of readable and maintainable parametrised tests.\n* [Mockito](https://github.com/mockito/mockito) - Creation of test double objects in automated unit tests for the purpose of TDD or BDD.\n* [Moco](https://github.com/dreamhead/moco) - Concise web services for stubs and mocks, Duke's Choice Award 2013.\n* [PIT](http://pitest.org) - Fast mutation-testing framework for evaluating fault-detection abilities of existing JUnit or TestNG test-suites.\n* [PowerMock](https://github.com/jayway/powermock) -  Enables mocking of static methods, constructors, final classes and methods, private methods and removal of static initializers.\n* [REST Assured](https://github.com/jayway/rest-assured) - Java DSL for easy testing for REST/HTTP services.\n* [Selenide](http://selenide.org/) - Concise API around Selenium to write stable and readable UI tests.\n* [Selenium](http://docs.seleniumhq.org/) - Portable software testing framework for web applications.\n* [Spock](http://spockframework.github.io/spock/docs/) - JUnit-compatible framework featuring an expressive Groovy-derived specification language.\n* [Truth](https://github.com/google/truth) - Google's assertion and proposition framework.\n* [WireMock](http://wiremock.org/) - Stubbs and mocks web services.\n\n## Utility \n[工具类]\n\n*Libraries which provide general utility functions.*\n\n* [Apache Commons](http://commons.apache.org/) - Provides different general purpose functions like configuration, validation, collections, file upload or XML processing.\n* [CRaSH](http://www.crashub.org) - Provides a shell into a JVM that's running CRaSH. Used by Spring Boot and others.\n* [Dex](https://github.com/PatMartin/Dex) - Java/JavaFX tool capable of powerful ETL and data visualization.\n* [Gephi](https://github.com/gephi/gephi/) - Cross-platform for visualizing and manipulating large graph networks.\n* [Guava](https://github.com/google/guava) - Collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth.\n* [JADE](http://jade.tilab.com/) - Framework and environment for building and to debugging multi-agent systems.\n* [JavaVerbalExpressions](https://github.com/VerbalExpressions/JavaVerbalExpressions) - A library that helps to construct difficult regular expressions.\n* [Protégé](http://protege.stanford.edu/) - Provides an ontology editor and a framework to build knowledge-based systems.\n\n## Web Crawling \n[网络爬虫]\n\n*Libraries that analyze the content of websites.*\n\n* [Apache Nutch](http://nutch.apache.org/) - Highly extensible, highly scalable web crawler for production environment.\n* [Crawler4j](https://github.com/yasserg/crawler4j) - Simple and lightweight web crawler.\n* [JSoup](http://jsoup.org/) - Scrapes, parses, manipulates and cleans HTML.\n\n## Web Frameworks \n[网络框架]\n\n*Frameworks that handle the communication between the layers of an web application.*\n\n* [Apache Tapestry](http://tapestry.apache.org/) - Component-oriented framework for creating dynamic, robust, highly scalable web applications.\n* [Apache Wicket](http://wicket.apache.org/) - Component-based web application framework similar to Tapestry with a stateful GUI.\n* [Blade](https://github.com/biezhi/blade) - Lightweight, modular framework which aims to be elegant and simple.\n* [Grails](https://grails.org/) - Groovy framework with the aim to provide a highly productive environment by favoring convention over configuration, no XML and support for mixins.\n* [Jooby](http://jooby.org) - Scalable, fast and modular micro framework which offers multiple programming models.\n* [Ninja](http://www.ninjaframework.org/) - Full stack web framework.\n* [Pippo](http://www.pippo.ro/) - Small, highly modularized Sinatra-like framework.\n* [Play](https://www.playframework.com/) - Uses convention over configuration, hot code reloading and display of errors in the browser.\n* [PrimeFaces](http://primefaces.org/) - JSF framework which has a free and a commercial version with support. Provides several frontend components.\n* [Ratpack](https://ratpack.io/) - Set of libraries that facilitate fast, efficient, evolvable and well tested HTTP applications.\n* [Spring Boot](http://projects.spring.io/spring-boot/) - Microframework which simplifies the development of new Spring applications.\n* [Vaadin](https://vaadin.com/home) - Event-driven framework build on top of GWT. Uses server-side architecture with Ajax on the client-side.\n\n# Resources\n\n## Communities \n[委员会]\n\n*Active discussions.*\n\n* [r/java](https://www.reddit.com/r/java) - Subreddit for the Java community.\n* [stackoverflow](http://stackoverflow.com/questions/tagged/java) - Question/answer platform.\n* [vJUG](http://virtualjug.com/) - Virtual Java User Group.\n\n## Frontends \n[前端]\n\n*Websites that provide a frontend for this list. Please note, there won't be an official website. We don't associate with a particular website and everybody is allowed to create one.*\n\n* [java.libhunt.com](https://java.libhunt.com/)\n\n## Influential Books \n[有影响力的书]\n\n*Books that had a high impact and are still worth reading.*\n\n* [Effective Java (2nd Edition)](http://www.amazon.com/Effective-Java-Edition-Joshua-Bloch/dp/0321356683)\n* [Java 8 in Action](http://www.amazon.com/Java-Action-Lambdas-functional-style-programming/dp/1617291994/)\n* [Java Concurrency in Practice](http://www.amazon.com/Java-Concurrency-Practice-Brian-Goetz/dp/0321349601)\n* [Thinking in Java](http://www.amazon.com/Thinking-Java-Edition-Bruce-Eckel/dp/0131872486)\n\n## Podcasts \n[播客]\n\n*Something to listen to while programming.*\n\n* [The Java Council](http://virtualjug.com/podcast/)\n* [The Java Posse](http://www.javaposse.com/) - Discontinued as of 02/2015.\n\n## Twitter \n[Twitter]\n\n*Active accounts to follow. Descriptions from Twitter.*\n\n* [Adam Bien](https://twitter.com/AdamBien/) - Freelancer: Author, JavaONE Rockstar Speaker, Consultant, Java Champion.\n* [Aleksey Shipilëv](https://twitter.com/shipilev) - Performance Geek, Benchmarking Tzar, Concurrency Bug Hunter.\n* [Antonio Goncalves](https://twitter.com/agoncal/) - Java Champion, JUG Leader, Devoxx France, Java EE 6/7, JCP, Author.\n* [Arun Gupta](https://twitter.com/arungupta/) - Java Champion, JavaOne Rockstar, JUG Leader, Devoxx4Kids-er, VP of Developer Advocacy at Couchbase.\n* [Brian Goetz](https://twitter.com/BrianGoetz) - Java Language Architect at Oracle.\n* [Bruno Borges](https://twitter.com/brunoborges) - Product Manager/Java Jock at Oracle.\n* [Ed Burns](https://twitter.com/edburns) - Consulting Member of the Technical Staff at Oracle.\n* [Eugen Paraschiv](https://twitter.com/baeldung) - Author of the Spring Security Course.\n* [James Weaver](https://twitter.com/JavaFXpert) - Java/JavaFX/IoT developer, author and speaker.\n* [Java EE](https://twitter.com/Java_EE/) - Official Java EE Twitter account.\n* [Java Magazine](https://twitter.com/Oraclejavamag) - Official Java Magazine account.\n* [Java](https://twitter.com/java/) - Official Java Twitter account.\n* [Javin Paul](https://twitter.com/javinpaul) - Well-known Java blogger.\n* [Lukas Eder](https://twitter.com/lukaseder) - Java Champion, speaker, JUG.ch co-leader, Founder and CEO Data Geekery (jOOQ).\n* [Mario Fusco](https://twitter.com/mariofusco) - RedHatter, JUG coordinator, frequent speaker and author.\n* [Mark Reinhold](https://twitter.com/mreinhold) - Chief Architect, Java Platform Group, Oracle.\n* [Markus Eisele](https://twitter.com/myfear) - Java EE evangelist, Red Hat.\n* [Martijn Verburg](https://twitter.com/karianna) - London JUG co-leader, speaker, author, Java Champion and much more.\n* [Martin Thompson](https://twitter.com/mjpt777) - Pasty faced performance gangster.\n* [OpenJDK](https://twitter.com/OpenJDK) - Official OpenJDK account.\n* [Peter Lawrey](https://twitter.com/PeterLawrey) - Peter Lawrey, Java performance expert.\n* [Reza Rahman](https://twitter.com/reza_rahman) - Java EE/GlassFish/WebLogic evangelist, author, speaker, open source hacker.\n* [Simon Maple](https://twitter.com/sjmaple) - Java Champion, virtualJUG founder, LJC leader, RebelLabs author.\n* [Stephen Colebourne](https://twitter.com/jodastephen) - Java Champion, speaker.\n* [Trisha Gee](https://twitter.com/trisha_gee) - Java Champion and speaker.\n\n## Websites \n[网站]\n\n*Sites to read.*\n\n* [Google Java Style](https://google.github.io/styleguide/javaguide.html)\n* [InfoQ](http://www.infoq.com/)\n* [Java Algorithms and Clients](http://algs4.cs.princeton.edu/code/)\n* [Java, SQL, and jOOQ](http://blog.jooq.org/)\n* [Java.net](https://community.oracle.com/community/java)\n* [Javalobby](https://dzone.com/java-jdk-development-tutorials-tools-news)\n* [JavaWorld](http://www.javaworld.com/)\n* [JAXenter](https://jaxenter.com/)\n* [RebelLabs](http://zeroturnaround.com/rebellabs/)\n* [The Takipi Blog](http://blog.takipi.com/)\n* [TheServerSide.com](http://www.theserverside.com/)\n* [Vanilla Java](https://vanilla-java.github.io/)\n* [Voxxed](https://www.voxxed.com/)\n\n# Contributing\n\nContributions are very welcome!\n\nPlease have a look at [CONTRIBUTING](https://github.com/akullpp/awesome-java/blob/master/CONTRIBUTING.md) for guidelines.\n\nSYNC FROM https://github.com/akullpp/awesome-java\n","projects_url":"https://awesome.ecosyste.ms/api/v1/lists/wangchongjie%2Fawesome-java/projects"}