Browse free open source Java Algorithms and projects below. Use the toggles on the left to filter open source Java Algorithms by OS, license, language, programming language, and project status.

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  • 1
    JCTools

    JCTools

    Java Concurrency Tools for the JVM

    Java Concurrency Tools for the JVM. This project aims to offer some concurrent data structures currently missing from the JDK. There’s more to come and contributions/suggestions are most welcome. JCTools has enjoyed support from the community and contributions in the form of issues/tests/documentation/code have helped it grow. JCTools offers excellent performance at a reasonable price (FREE! under the Apache 2.0 License). It’s stable and in use by such distinguished frameworks as Netty, RxJava and others. JCTools is also used by commercial products with great results. JCTools is maven built and requires an existing Maven installation and JDK8 (only for building, runtime is 1.6 compliant). With ‘MAVEN_HOME/bin’ on the path and JDK8 set to your ‘JAVA_HOME’ you should be able to run “mvn install” from this directory. While you are free to copy & extend JCTools, we would much prefer it if you have a versioned dependency on JCTools to enable better support, upgrade paths and discussion.
    Downloads: 0 This Week
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  • 2
    JClassCollections is a library of Java collections whose contents can be filtered by class. When a filtered view is requested, all objects that are instances of the specified class (either directly or via inheritance) are included.
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  • 3
    JCortex is a complete solution that allows software developers create, educate and use Artificial Neural Networks in Java projects. Splits in two elements: JCortex Framework, an ANN Java framework; and JCortexBuilder, its graphic development environment.
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  • 4
    Based on the classification algorithm coverage tools JCover,developed by java and it's open source.at present,it include field-cover and cross-cover.
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  • 5

    JCycles

    [frozen] A library for computing cycles in graphs or in Java code.

    [This project is frozen, but has an offspring with more features: https://github.com/jeffhain/jadecy ] JCycles provides treatments to compute cycles, or just strongly connected components, in directed graphs in general, or in classes or packages dependencies graphs parsed from class files (major version <= 51, else does best effort). It uses Tarjan's algorithm for SCCs, and Johnson's for cycles, with continuations instead of recursion, which allows to handle large graphs (< Integer.MAX_VALUE vertices). Requires Java 5 or later.
    Downloads: 0 This Week
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  • 6
    A java project to create a library that can calculate decompression schemes for diving. Different open source algorithms can be chosen to use for the calculation. For example Bühlmann and VPM.
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  • 7
    JFacedec is aimed to build a flexible face detection system based on Java. The plug-in framwork makes it easy for you to share your own Training & Detection Algorithms, compare different methods and make progress together in this field.
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  • 8
    A Graph support extension to the java.util collections framework.
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  • 9
    A java framework for developing meta-heuristics that supports the use of grids environments. The meta-heuristics planned to be realeased are GAs, VNS and NNs. The grid middleware that will be firstly explored is the OurGrid solution.
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  • 10
    JKalman is an Open Source Java implementation of Kalman filter. Kalman filter is an efficient computational (recursive) tool to estimate the dynamic state of a process in a way that minimizes the mean of error.
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  • 11
    The project models a Matrix in JAVA with a complete Object Oriented approach, from its values to its access and indices. There are specialized classes for tables(2), cubes(3), and arbitrary(N) dimensions matrices
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  • 12
    JMill is the java-based game of "Nine Men's Morris". This project is son of the greater parent SourceForge project "JGames", that realizes the real game environment...
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  • 13
    JNSGA2 is a Java library with an implementation of the multi-objective genetic algorithm NSGA-II published by Deb et al.
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  • 14
    Common classes for the Ballistic software
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  • 15
    Common classes to perform mathematical operations
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  • 16
    JNdiff: An Optimized Alghorithm for Natural (XML) Diff-ing
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  • 17
    JOthi is the java-based game of "Othello". This project is son of the greater parent SourceForge project "JGames", that realizes the real game environment: JOthi only defines the "Othello" game rules and its specific AI players.
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  • 18
    JS-Sorting-Algorithm

    JS-Sorting-Algorithm

    A GitBook online book on sorting algorithms

    JS-Sorting-Algorithm is an educational repository and GitBook-style resource about classic sorting algorithms. It explains sorting as a core topic in data structures and algorithms, with attention to internal sorting, external sorting, time complexity, memory usage, and stability. The guide covers ten major sorting methods, including bubble sort, selection sort, insertion sort, shell sort, merge sort, quicksort, heap sort, counting sort, bucket sort, and radix sort. It compares algorithms by complexity classes such as quadratic time, linearithmic time, and linear time. The repository also includes terminology explanations for concepts like data size, buckets, in-place sorting, out-place sorting, and stability. Overall, it is a compact reference for students and developers who want to review sorting theory and implementation examples.
    Downloads: 0 This Week
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  • 19
    Application provide indexing and searching capability using Inverted File & TVSM methods. Also provide native integration with UNIX based indexing service also GoogleBase & YouTube search via Atom feeds.
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  • 20
    JSort is a library with some sorting algorithms implementation and related data structure. It has compare-based algorithms, linear sorting, graph sorting, priority based queue, and so on.
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  • 21
    The JSparse Matrix Package, developed by Philipp Geigenmüller during an internship at the prudsys AG in Chemnitz, Germany, is an extension of the well-known Java Matrix Package (JAMA) and allows the use of sparse matrices and related algorithms.
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  • 22
    Currently, all existing formal tools are designed to serve as formal verifiers, using one implementation or another. JTLV is a new tool aimed to facilitate and provide a unified framework to the development of formal verification algorithms.
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  • 23
    JUtilClasses

    JUtilClasses

    Java programmer's aid in useful methods and classes

    Util-Classes is a collection of Java classes for programming support in service for building applications. It covers a wide range of topics from simple small routines over Collection classes to larger utilities addressing IO-management, GUI topics and data safety.
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  • 24
    JXmlSql is a Java database API ( MySql, Oracle, Access )that eliminates JDBC code. JXmlSql allows developers to define application and prepopulation SQL statements inside xml files. Options for query, insert, update, delete, report and prepopulation SQL.
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  • 25
    JaNaG is a Java random name generator for role-games, authors, and the like. It is based on a name fragment database that creates relatively reasonably sounding names. It can run as applet, GUI appliance, command line tool, or on a server-client basis.
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