Gentoo Project

Java

acct-group

• acct-group/hsqldb

  Group for hsqldb
• acct-group/i2p

  Group for system-wide net-vpn/i2p
• acct-group/tomcat

  Group for Apache Tomcat

acct-user

• acct-user/hsqldb

  User for hsqldb
• acct-user/i2p

  User for system-wide net-vpn/i2p
• acct-user/tomcat

  User for Apache Tomcat

app-accessibility

• app-accessibility/freetts

  A speech synthesis system written entirely in Java

app-crypt

• app-crypt/jacksum

  Java utility for working with checksums, CRCs, and message digests (hashes)

app-editors

• app-editors/jedit

  Programmer's editor written in Java

app-eselect

• app-eselect/eselect-java

  A set of eselect modules for Java
• app-eselect/eselect-scala

  Manages multiple Scala versions

app-misc

• app-misc/rundeck-cli-bin

  Command line tool for rundeck

app-text

• app-text/jabref-bin

  Java GUI for managing BibTeX and other bibliographies
• app-text/pdftk

  A port of pdftk into java
• app-text/trang

  Multi-format schema converter based on RELAX NG

app-vim

• app-vim/vimclojure

  vim plugin: Clojure syntax highlighting, filetype and indent settings

dev-cpp

• dev-cpp/antlr-cpp

  The ANTLR 4 C++ Runtime

dev-db

• dev-db/apgdiff

  A simple PostgreSQL diff tool that is useful for schema upgrades
• dev-db/hsqldb

  The leading SQL relational database engine written in Java

dev-java

• dev-java/angus-activation

  Provides the implementation of the Jakarta Activation Specification
• dev-java/animal-sniffer-annotations

  Java annotations for marking methods that Animal Sniffer should ignore
• dev-java/ant

  Java-based build tool similar to 'make' that uses XML configuration files
• dev-java/ant-contrib

  Ant-contrib tasks for Apache Ant
• dev-java/ant-core

  Compatibility link to ant-core for >=dev-java/ant-1.10.14
• dev-java/ant-ivy

  Ivy is a free java based dependency manager
• dev-java/antlr

  A parser generator for many languages
• dev-java/antlr-runtime

  ANTLR 4 Runtime
• dev-java/antlr-tool

  The ANTLR 3 tool
• dev-java/antunit

  An Antlib that provides a test framework for Apache Ant tasks and types
• dev-java/aopalliance

  Aspect-Oriented Programming (AOP) Alliance classes
• dev-java/apache-rat

  Apache Rat is a release audit tool, focused on licenses
• dev-java/apiguardian-api

  @org.apiguardian.api.API Java annotation provider
• dev-java/asm

  Bytecode manipulation framework for Java
• dev-java/aspectj

  A seamless aspect-oriented extension to the Java programming language
• dev-java/assertj-core

  Rich and fluent assertions for testing for Java
• dev-java/auto-service-annotations

  Provider-configuration files for ServiceLoader
• dev-java/batik

  XML Graphics Batik
• dev-java/bcel

  Apache Commons Bytecode Engineering Library
• dev-java/bcmail

  The Bouncy Castle Java S/MIME APIs for handling S/MIME protocols
• dev-java/bcpg

  Java cryptography APIs
• dev-java/bcpkix

  Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation
• dev-java/bcprov

  Java cryptography APIs
• dev-java/bcutil

  Java APIs for ASN.1 extension and utility APIs used to support bcpkix and bctls
• dev-java/bnd

  bndlib: A Swiss Army Knife for OSGi
• dev-java/bnd-annotation

  bnd Annotations Library
• dev-java/bnd-ant

  Bnd Ant Tasks
• dev-java/bndlib

  bndlib: A Swiss Army Knife for OSGi
• dev-java/bnd-util

  AQute Bnd Utilities
• dev-java/brotli-dec

  Brotli decompressor
• dev-java/browserlauncher2

  A library that facilitates opening a browser from a Java application
• dev-java/bsf

  Bean Script Framework
• dev-java/bsh

  A small embeddable Java source interpreter
• dev-java/byaccj

  A Java extension of BSD YACC-compatible parser generator
• dev-java/byte-buddy

  Offers convenience for attaching an agent to the local or a remote VM
• dev-java/c3p0

  JDBC drivers with JNDI-bindable DataSources
• dev-java/cache2k-api

  light weight and high performance Java caching library: API
• dev-java/cache2k-core

  light weight and high performance Java caching library: core
• dev-java/caffeine

  A high performance caching library
• dev-java/cal10n

  java library for writing localized messages using resource bundle
• dev-java/cdi-api

  APIs for CDI (Contexts and Dependency Injection for Java)
• dev-java/cglib

  cglib is a powerful, high performance and quality Code Generation Library
• dev-java/checker-framework-qual

  Annotations for type-checking by the Checker Framework
• dev-java/commons-beanutils

  Provides easy-to-use wrappers around Reflection and Introspection APIs
• dev-java/commons-cli

  A Java library for working with the command line arguments and options
• dev-java/commons-codec

  Implementations of common encoders and decoders in Java
• dev-java/commons-collections

  Jakarta-Commons Collections Component
• dev-java/commons-compress

  Java API for working with archive files
• dev-java/commons-csv

  Simple interface for reading and writing CSV files of various types
• dev-java/commons-daemon

  Tools to allow Java programs to run as UNIX daemons
• dev-java/commons-digester

  Reads XML configuration files to provide initialization of various Java objects
• dev-java/commons-httpclient

  The Jakarta Commons HttpClient library
• dev-java/commons-imaging

  A minimalistic realtime charting library for Java
• dev-java/commons-io

  Utility classes, stream implementations, file filters, and much more
• dev-java/commons-junit4

  Assertions etc. for those who write tests with JUNIT 4
• dev-java/commons-lang

  Commons components to manipulate core java classes
• dev-java/commons-logging

  Thin adapter allowing configurable bridging to other well known logging systems
• dev-java/commons-math

  Lightweight, self-contained mathematics and statistics components
• dev-java/commons-net

  Client-oriented Java library to implement many Internet protocols
• dev-java/commons-nullanalysis

  Annotations and utility classes for ECLIPSE annotation-base null analysis
• dev-java/commons-validator

  Commons component to validate user input, or data input
• dev-java/commons-vfs

  A single API for accessing various different file systems
• dev-java/concurrentlinkedhashmap-lru

  A high performance version of java.util.LinkedHashMap for use as software cache
• dev-java/conversant-disruptor

  Conversant Disruptor - very high throughput Java BlockingQueue
• dev-java/cortado

  Multimedia framework for Java written by Fluendo
• dev-java/cpptasks

  Ant-tasks to compile various source languages and produce executables
• dev-java/dom4j

  flexible XML framework for Java
• dev-java/easymock

  Mock Objects for interfaces in JUnit tests by generating them on the fly
• dev-java/eclipse-ecj

  Eclipse Compiler for Java
• dev-java/eclipse-jdt-annotation

  JDT Annotations for Enhanced Null Analysis
• dev-java/emma

  Free Java code coverage tool
• dev-java/error-prone-annotations

  Java annotations for the Error Prone static analysis tool
• dev-java/fastinfoset

  Open Source implementation of the Fast Infoset Standard for Binary XML
• dev-java/fec

  Forward Error Correction library in Java
• dev-java/felix-framework

  Implementation of the OSGi R8 core framework specification
• dev-java/felix-gogo-runtime

  Apache Felix Gogo Runtime
• dev-java/felix-main

  Open source OSGi framework by Apache Software Foundation
• dev-java/felix-resolver

  Provide OSGi resolver service.
• dev-java/felix-utils

  Utility classes for OSGi
• dev-java/findbugs-annotations

  Annotation defined by the FindBugs tool
• dev-java/fishbowl

  Use the AAA pattern for writing tests for code that throws an exception
• dev-java/fontbox

  An open source Java library for parsing font files
• dev-java/fop

  XML Graphics Format Object Processor All-In-One
• dev-java/freenet-ext

  Freenet REference Daemon
• dev-java/gin

  Google Gin (GWT INjection)
• dev-java/gnu-regexp

  GNU regular expression package for Java
• dev-java/gradle-bin

  A project automation and build tool with a Groovy based DSL
• dev-java/greenmail

  GreenMail - Email Test Servers
• dev-java/gson

  Gson JSON library
• dev-java/guava

  A collection of Google's core Java libraries
• dev-java/guava-testlib

  A set of java classes to assist the tests for Guava itself
• dev-java/guice

  Guice is a lightweight dependency injection framework for Java 6 and above
• dev-java/gwt

  Google Web Toolkit library
• dev-java/hamcrest

  Core API and libraries of hamcrest matcher framework.
• dev-java/hamcrest-core

  Core library of matchers for building test expressions
• dev-java/hamcrest-generator

  Code generator for Hamcrest's library of matchers for building test expressions
• dev-java/hamcrest-library

  Core library of matchers for building test expressions
• dev-java/hashcash

  Generation and parsing of Hashcash
• dev-java/hawtjni-runtime

  A JNI code generator based on the generator used by the Eclipse SWT project
• dev-java/htmlcleaner

  HTML parser written in Java that can be used as a tool, library or Ant task
• dev-java/httpcomponents-client

  Apache HttpComponents Client
• dev-java/httpcore

  Apache HttpComponents Core (blocking I/O)
• dev-java/icedtea-bin

  A Gentoo-made binary build of the IcedTea JDK
• dev-java/icedtea-sound

  Plugins for javax.sound
• dev-java/icedtea-web

  FOSS Java browser plugin and Web Start implementation
• dev-java/icu4j

  A set of Java libraries providing Unicode and Globalization support
• dev-java/identicon

  Visual representation of a hash value
• dev-java/injection-api

  Jakarta Dependency Injection
• dev-java/iso-relax

  Interfaces useful for applications which support RELAX Core
• dev-java/istack-commons-runtime

  istack common utility code
• dev-java/j2objc-annotations

  Annotations for the J2ObjC Java to Objective-C translator
• dev-java/jackcess

  A pure Java library for reading from and writing to MS Access databases
• dev-java/jackrabbit-webdav

  Fully conforming implementation of the JRC API (specified in JSR 170 and 283)
• dev-java/jackson-annotations

  Core annotations used for value types, used by Jackson data binding package.
• dev-java/jackson-core

  Core Jackson processing abstractions (Streaming API), implementation for JSON
• dev-java/jackson-databind

  General data-binding functionality for Jackson: works on core streaming API
• dev-java/jackson-dataformat-xml

  Data format extension for Jackson
• dev-java/jackson-dataformat-yaml

  Support for reading and writing YAML-encoded data via Jackson abstractions
• dev-java/jackson-module-jakarta-xmlbind

  Support for using Jakarta XML Bind (aka JAXB 3.0) annotations
• dev-java/jacl

  Jacl is an implementation of Tcl written in Java
• dev-java/jai-imageio-core

  Java Advanced Imaging Image I/O Tools API core (standalone)
• dev-java/jai-imageio-jpeg2000

  JPEG2000 support for Java Advanced Imaging Image I/O Tools API
• dev-java/jakarta-activation

  Jakarta Activation
• dev-java/jakarta-activation-api

  Jakarta Activation API jar
• dev-java/jakarta-annotations-api

  Jakarta Annotations API
• dev-java/jakartaee-migration

  Apache Tomcat tool for migration from Java EE 8 to Jakarta EE 9
• dev-java/jakarta-el-api

  Jakarta Expression Language defines an expression language for Java applications
• dev-java/jakarta-interceptors

  Jakarta Interceptors
• dev-java/jakarta-json-api

  JSR 374 (JSON Processing) API
• dev-java/jakarta-mail

  Implementation of the Jakarta Mail API
• dev-java/jakarta-mail-api

  Jakarta Mail API 2.1 Specification API
• dev-java/jakarta-oro

  A set of text-processing Java classes
• dev-java/jakarta-regexp

  100% Pure Java Regular Expression package
• dev-java/jakarta-servlet-api

  Javax servlet API
• dev-java/jakarta-xml-soap-api

  SOAP with Attachments API for Java (SAAJ) API (Eclipse Project for JAX-WS)
• dev-java/jal

  Partial port of the C++ Standard Template Library
• dev-java/jansi

  A library that allows you to use ANSI escape sequences in your console output
• dev-java/jansi-native

  Native JNI component for dev-java/jansi
• dev-java/javacc

  Java Compiler Compiler - The Java Parser Generator
• dev-java/java-config

  Java environment configuration query tool
• dev-java/javacup

  CUP Parser Generator for Java
• dev-java/java-dep-check

  Java Dependency checker
• dev-java/java-diff-utils

  Library for computing diffs, applying patches, generationg side-by-side view
• dev-java/java-getopt

  Java command line option parser
• dev-java/javahelp

  The JavaHelp system online help system
• dev-java/javaparser-core

  Java 1-17 Parser and Abstract Syntax Tree for Java
• dev-java/java-service-wrapper

  A wrapper that makes it possible to install a Java Application as daemon
• dev-java/javassist

  A class library for editing bytecodes in Java.
• dev-java/javatoolkit

  Collection of Gentoo-specific tools for Java
• dev-java/javax-el-api

  Expression Language API
• dev-java/javax-inject

  Dependency injection for Java (JSR-330)
• dev-java/javax-jms-api

  Jakarta Messaging
• dev-java/javax-jsp-api

  JavaServer Pages(TM) API JSR-000152 JSR-000245
• dev-java/javax-mail

  Jakarta Mail API
• dev-java/javax-persistence-api

  Persistence API
• dev-java/javax-servlet-api

  JavaServlet(TM) Specification JSR-000340
• dev-java/jaxb-api

  Jakarta XML Binding API
• dev-java/jaxb-runtime

  JAXB (JSR 222) Reference Implementation
• dev-java/jaxb-stax-ex

  Extensions to JSR-173 StAX API
• dev-java/jaxen

  Jaxen is a universal XPath engine for Java
• dev-java/jax-rpc-api

  Eclipse Project for Stable EE4J APIs
• dev-java/jaxrs-api

  Jakarta RESTful Web Services API
• dev-java/jaxws-api

  JAX-WS (JSR 224) API (Eclipse Project for JAX-WS)
• dev-java/jbcrypt

  Java implementation of OpenBSD's Blowfish password hashing code
• dev-java/jbig2-imageio

  PDFBox JBIG2 ImageIO plugin
• dev-java/jboss-jms-api

  JSR-000914: Java(TM) Message Service (JMS) 1.1 API
• dev-java/jcalendar

  Java date chooser bean for graphically picking a date
• dev-java/jchart2d

  A minimalistic realtime charting library for Java
• dev-java/jcifs

  Library that implements the CIFS/SMB networking protocol in Java
• dev-java/jclasslib

  Java bytecode viewer
• dev-java/jcommander

  Command line parsing framework for Java
• dev-java/jctools-core

  Java Concurrency Tools Core Library
• dev-java/jdbc-mysql

  JDBC Type 4 driver for MySQL
• dev-java/jdbc-postgresql

  Java JDBC 4.2 (JRE 8+) driver for PostgreSQL database
• dev-java/jdepend

  Traverses Java class file directories and generates design quality metrics
• dev-java/jdisasm

  A disassembler for Java .class files
• dev-java/jdom

  Java-based solution for accessing, manipulating, and outputting XML data
• dev-java/jeromq

  Pure Java implementation of libzmq
• dev-java/jffi

  Java Foreign Function Interface
• dev-java/jflex

  JFlex is a lexical analyzer generator for Java
• dev-java/jgoodies-common

  JGoodies Common Library
• dev-java/jgoodies-looks

  JGoodies Looks Library
• dev-java/jide-oss

  JIDE Common Layer (Professional Swing Components)
• dev-java/jimfs

  An in-memory file system for Java 7+
• dev-java/jline

  A Java library for handling console input
• dev-java/jmc

  JDK Mission Control
• dev-java/jmh-core

  Harness for building, running, and analysing nano/micro/milli/macro benchmarks
• dev-java/jmh-generator-annprocess

  Harness for building, running, and analysing nano/micro/milli/macro benchmarks
• dev-java/jmock

  An expressive Mock Object library for Test Driven Development
• dev-java/jna

  Java Native Access
• dev-java/jnacl

  Pure Java implementation of NaCl: Networking and Cryptography library
• dev-java/jnr-a64asm

  A pure-java A64 assembler
• dev-java/jnr-constants

  A set of platform constants (e.g. errno values)
• dev-java/jnr-ffi

  A library for invoking native functions from java
• dev-java/jnr-netdb

  Network services database access for java
• dev-java/jnr-posix

  Common cross-project/cross-platform POSIX APIs
• dev-java/jnr-x86asm

  A pure-java port of asmjit
• dev-java/joda-convert

  Library to convert Objects to and from String
• dev-java/joda-time

  Date and time library to replace JDK date handling
• dev-java/jol-core

  Java Object Layout: Core
• dev-java/jopt-simple

  A Java library for parsing command line options
• dev-java/jrobin

  JRobin is a 100% pure Java alternative to RRDTool
• dev-java/jsch

  JSch is a pure Java implementation of SSH2
• dev-java/jsch-agent-proxy

  a proxy to ssh-agent and Pageant in Java
• dev-java/json

  A reference implementation of a JSON package in Java
• dev-java/jsonrpc2-base

  Represent, parse and serialise JSON-RPC 2.0 messages
• dev-java/jsonrpc2-server

  Server framework for processing JSON-RPC 2.0 messages
• dev-java/json-simple

  Java 7+ toolkit to quickly develop RFC 4627 JSON compatible applications
• dev-java/json-smart

  JSON Small and Fast Parser
• dev-java/jsr305

  Annotations for Software Defect Detection in Java
• dev-java/jstl

  Jakarta Standard Tag Library API
• dev-java/jstl-api

  Jakarta Standard Tag Library API
• dev-java/jtds

  jTDS - SQL Server and Sybase JDBC driver
• dev-java/jtidy

  a Java port of HTML Tidy, a HTML syntax checker and pretty printer
• dev-java/jtwig-core

  Jtwig Reflection Library
• dev-java/jtwig-reflection

  Jtwig Reflection Library
• dev-java/jul-to-slf4j

  JUL to SLF4J bridge
• dev-java/junit

  Simple framework to write repeatable tests
• dev-java/junit-clptr

  ClassLoader per Test runner for JUnit 4.12+
• dev-java/junit-dataprovider

  The common core for a TestNG like dataprovider runner for JUnit
• dev-java/junitparams

  Better parameterised tests for JUnit
• dev-java/jzlib

  JZlib is a re-implementation of zlib in pure Java
• dev-java/kafka-clients

  Apache Kafka distributed event streaming platform
• dev-java/leiningen-bin

  Automate Clojure projects without setting your hair on fire
• dev-java/libg

  A library to be statically linked. Contains many small utilities
• dev-java/lmax-disruptor

  A High Performance Inter-Thread Messaging Library
• dev-java/log4j-12-api

  The Apache Log4j 1.x Compatibility API
• dev-java/log4j-api

  The Apache Log4j API
• dev-java/log4j-core

  The Apache Log4j Implementation
• dev-java/log4j-over-slf4j

  Log4j implemented over SLF4J
• dev-java/lucene

  High-performance, full-featured text search engine written entirely in Java
• dev-java/lz4-java

  LZ4 compression for Java
• dev-java/lzma

  Java code for LZMA compression and decompression
• dev-java/lzmajio

  LzmaInputStream/LzmaOutputStream interacting with underlying LZMA en-/decoders
• dev-java/maven-bin

  Project Management and Comprehension Tool for Java
• dev-java/mchange-commons

  a library of arguably useful Java utilities.
• dev-java/memoryfilesystem

  An in memory implementation of a JSR-203 file system.
• dev-java/mersennetwister

  Modified MersenneTwister java port for Freenet
• dev-java/metainf-services

  Generates META-INF/services files automatically
• dev-java/miglayout

  MiGLayout - Java Layout Manager for Swing, SWT and JavaFX
• dev-java/minidns-core

  DNS library for Java and Android systems
• dev-java/mockito

  Mockito mock objects library core API and implementation
• dev-java/msv

  Multi-Schema Validator Core package
• dev-java/mvel

  MVFLEX Expression Language
• dev-java/objenesis

  A library for instantiating Java objects
• dev-java/openjdk

  Open source implementation of the Java programming language
• dev-java/openjdk-bin

  Prebuilt Java JDK binaries provided by Eclipse Temurin
• dev-java/openjdk-jre-bin

  Prebuilt Java JRE binaries provided by Eclipse Temurin
• dev-java/openjfx

  Java OpenJFX client application platform
• dev-java/opentest4j

  Open Test Alliance for the JVM
• dev-java/open-test-reporting-events

  Language-agnostic test reporting format and tooling
• dev-java/open-test-reporting-schema

  Language-agnostic test reporting format and tooling
• dev-java/osgi-annotation

  OSGi Annotation Release 8, Annotations for use in compiling bundles
• dev-java/osgi-cmpn

  OSGi Service Platform Compendium API (Companion Code)
• dev-java/osgi-core

  OSGi Service Platform Core API (Companion Code)
• dev-java/osgi-service-log

  OSGi Companion Code for org.osgi.service.log
• dev-java/osgi-service-subsystem

  OSGi Companion Code for org.osgi.service.subsystem
• dev-java/owasp-java-encoder

  OWASP Java Encoder
• dev-java/parboiled

  Elegant parsing in Java and Scala - lightweight, easy-to-use, powerful
• dev-java/pdfbox

  Java library and utilities for working with PDF documents
• dev-java/picocli

  Java command line parser with both an annotations API and a programmatic API
• dev-java/plexus-classworlds

  The class loader framework of the Plexus project
• dev-java/poi

  Maven build of Apache POI for Sonar checks
• dev-java/protobuf-java

  Core Protocol Buffers library
• dev-java/qdox

  Parser for extracting class/interface/method definitions
• dev-java/randomized-runner

  JUnit test runner and plugins for running JUnit tests with pseudo-randomness
• dev-java/reflections

  Reflections - a Java runtime metadata analysis
• dev-java/relaxng-datatype

  Interface between RELAX NG validators and datatype libraries
• dev-java/reload4j

  Reload4j revives EOLed log4j 1.x
• dev-java/rhino

  An open-source implementation of JavaScript written in Java
• dev-java/rome

  Java framework for RSS and Atom feeds
• dev-java/rxtx

  Native library providing serial and parallel communication for Java
• dev-java/saslprep

  SASLprep: Stringprep Profile for User Names and Passwords
• dev-java/sax

  SAX: Simple API for XML in Java
• dev-java/saxon

  A XSLT and XQuery Processor
• dev-java/sbt-bin

  sbt, a build tool for Scala
• dev-java/scram

  Java Implementation of the Salted Challenge Response Authentication Mechanism
• dev-java/shrinkwrap-api

  Client View of the ShrinkWrap Project
• dev-java/shrinkwrap-impl-base

  Common Base for Implementations of the ShrinkWrap Project
• dev-java/shrinkwrap-spi

  Generic Service Provider Contract of the ShrinkWrap Project
• dev-java/sjsxp

  Sun Java Streaming XML Parser (SJSXP) is the implementation of JSR 173
• dev-java/slf4j-api

  The slf4j API
• dev-java/slf4j-ext

  Extensions to the SLF4J API
• dev-java/slf4j-nop

  SLF4J NOP Binding
• dev-java/slf4j-reload4j

  SLF4J Reload4j Binding
• dev-java/slf4j-simple

  SLF4J Simple binding
• dev-java/snakeyaml

  YAML 1.1 parser and emitter for Java
• dev-java/snappy

  Snappy compressor/decompressor for Java
• dev-java/sparsebitset

  An efficient sparse bitset implementation for Java
• dev-java/stax2-api

  stax2 API is an extension to basic Stax 1.0 API
• dev-java/stringprep

  SASLprep: Stringprep Profile for User Names and Passwords
• dev-java/stringtemplate

  A Java template engine
• dev-java/sun-jai-bin

  JAI is a class library for managing images
• dev-java/swing-layout

  Professional cross platform layouts with Swing
• dev-java/swingx

  A collection of powerful, useful, and just plain fun Swing components
• dev-java/swingx-beaninfo

  SwingX Beaninfo
• dev-java/swingx-ws

  Utilities and widgets to integrate Swing GUIs with web applications
• dev-java/swt

  GTK based SWT Library
• dev-java/system-rules

  A collection of JUnit rules for testing code which uses java.lang.System.
• dev-java/testng

  Testing framework inspired by JUnit and NUnit with new features
• dev-java/tomcat-native

  Allows Tomcat to use certain native resources for better performance
• dev-java/tomcat-servlet-api

  Tomcat's Servlet API 2.3/JSP API 1.2 implementation
• dev-java/treelayout

  Efficient and customizable TreeLayout Algorithm in Java.
• dev-java/txw2

  TXW is a library that allows you to write XML documents
• dev-java/typesafe-config

  A library of arguably useful Java utilities
• dev-java/unbescape

  Advanced yet easy-to-use escape/unescape library for Java
• dev-java/univocity-parsers

  A collection of extremely fast and reliable parsers for Java
• dev-java/validation-api

  Bean Validation (JSR-303) API
• dev-java/velocity

  Apache Velocity is a general purpose template engine
• dev-java/waffle-jna

  Enable drop-in Windows Single Sign On for popular Java web servers
• dev-java/woodstox-core

  An XML processor that implements Stax (JSR-173), SAX2 and Stax2 APIs
• dev-java/wsdl4j

  Web Services Description Language for Java Toolkit (WSDL4J)
• dev-java/xalan

  Transforming XML documents into HTML, text, or other XML document types
• dev-java/xalan-serializer

  Transforming XML documents into HTML, text, or other XML document types
• dev-java/xerces

  Xerces Java XML parser
• dev-java/xerial-core

  Core library of the Xerial project.
• dev-java/xml-commons-external

  Externally-defined set of standard interfaces, namely DOM, SAX, and JAXP
• dev-java/xml-commons-resolver

  An XML Entity and URI Resolver
• dev-java/xmlgraphics-commons

  XML Graphics Commons
• dev-java/xmlunit

  XMLUnit extends JUnit and NUnit to enable unit testing of XML
• dev-java/xmlunit-assertj

  XMLUnit with AssertJ fluent API
• dev-java/xmlunit-core

  XMLUnit for Java
• dev-java/xmlunit-matchers

  XMLUnit for Java Hamcrest Matchers
• dev-java/xmpbox

  An open source Java tool that implements Adobe's XMP(TM) specification
• dev-java/xom

  XML Object Model
• dev-java/xpp2

  A streaming pull XML parser used to quickly process input elements
• dev-java/xpp3

  An implementation of XMLPULL V1 API
• dev-java/xsdlib

  XML Schema datatypes library
• dev-java/xz-java

  Implementation of xz data compression in pure java
• dev-java/zstd-jni

  JNI bindings for Zstd native library
• dev-java/zxing-core

  Core barcode encoding/decoding library
• dev-java/zxing-javase

  Core barcode encoding/decoding library

dev-lang

• dev-lang/scala

  The Scala Programming Language
• dev-lang/scala-bin

  The Scala Programming Language

dev-libs

• dev-libs/bitshuffle

  Bitshuffle C library

dev-lisp

• dev-lisp/abcl

  Armed Bear Common Lisp is a Common Lisp implementation for the JVM

dev-util

• dev-util/argouml

  Modelling tool that helps you do your design using UML
• dev-util/visualvm

  Integrates commandline JDK tools and profiling capabilities
• dev-util/weka

  A Java data mining package

media-gfx

• media-gfx/plantuml

  Draw UML diagrams using a simple and human readable text description

net-nds

• net-nds/jxplorer

  Fully functional LDAP browser written in Java

net-p2p

• net-p2p/biglybt

  Feature-filled Bittorrent client based on the Azureus open source project

net-vpn

• net-vpn/i2p

  A privacy-centric, anonymous network

sci-mathematics

• sci-mathematics/geogebra-bin

  Mathematics software for geometry

sci-visualization

• sci-visualization/gcalc

  Java Mathematical Graphing System

sec-keys

• sec-keys/openpgp-keys-apache-ant

  OpenPGP keys used by ant.apache.org
• sec-keys/openpgp-keys-apache-commons

  OpenPGP keys used by commons.apache.org
• sec-keys/openpgp-keys-apache-commons-httpclient

  OpenPGP keys used by httpclient.commons.apache.org
• sec-keys/openpgp-keys-apache-creadur

  OpenPGP keys used by creadur.apache.org
• sec-keys/openpgp-keys-apache-felix

  OpenPGP keys used by felix.apache.org
• sec-keys/openpgp-keys-apache-logging

  OpenPGP keys used by logging.apache.org
• sec-keys/openpgp-keys-apache-tomcat

  OpenPGP keys used by tomcat.apache.org
• sec-keys/openpgp-keys-apache-tomcat-connectors

  OpenPGP keys used by tomcat-connectors
• sec-keys/openpgp-keys-apache-xalan-j

  OpenPGP keys used by xalan.apache.org
• sec-keys/openpgp-keys-apache-xerces-j

  OpenPGP keys used by xerces.apache.org/xerces2-j
• sec-keys/openpgp-keys-apache-xmlgraphics-batik

  OpenPGP keys used by xmlgraphics.apache.org/batik
• sec-keys/openpgp-keys-apache-xmlgraphics-commons

  OpenPGP keys used by xmlgraphics.apache.org/commons
• sec-keys/openpgp-keys-apache-xmlgraphics-fop

  OpenPGP keys used by xmlgraphics.apache.org/fop
• sec-keys/openpgp-keys-freenet

  OpenPGP keys used by freenetproject.org

sys-apps

• sys-apps/baselayout-java

  Baselayout for Java

sys-cluster

• sys-cluster/spark-bin

  Lightning-fast unified analytics engine

sys-fs

• sys-fs/jdiskreport-bin

  JDiskReport helps you to understand disk drive usage

virtual

• virtual/jdk

  Virtual for Java Development Kit (JDK)
• virtual/jre

  Virtual for Java Runtime Environment (JRE)

www-apache

• www-apache/mod_jk

  Provides an AJP Apache2-JK-connector for the Tomcat servlet engine

www-servers

• www-servers/tomcat

  Tomcat Servlet-3.1/JSP-2.3/EL-3.0/WebSocket-1.1/JASPIC-1.1 Container