Java is a versatile, object-oriented programming language that is widely used for software development across various industries. Java Developers can help clients create anything from complex web applications to automated trading bots and mobile apps. With their advanced skills and knowledge, they can turn your vision into reality, providing you with tailored solutions that align with your business goals. Here are some recent projects that our expert Java Developers made real:

  • Developing custom GUIs for existing codebases
  • Creating encrypted, secure crypto apps
  • Designing cross-platform audio merging tools for mobile devices
  • Building sophisticated trading bots for the cryptocurrency market
  • Implementing open-source virtual machines in C
  • Collaborating as senior developers on large-scale Android projects
  • Solving server request errors for mobile applications
  • Running and optimizing code from Git repositories
  • Designing and implementing web services for seamless integration

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    281 trabalhos encontrados, preços em USD

    Estou com uma extensão de atualizar a página para conseguir evento para X local, mas não posso estar olhando o tempo inteiro, então preciso de um software que me avise quando aparecer o texto que eu precise na tela (da vaga disponível.)

    $226 (Avg Bid)
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    12 ofertas

    estou fazendo um trabalho da faculdade mas estou com muito pouco tempo, então preciso recorrer a isso, necessito de algumas coisas no projeto. E um projeto de pesquisa de hoteis, só preciso de ajuda em algumas coisas mais complexas que não tenho muita experiencia para concluir, na na parte de pesquisa existe 4 cidades cada uma possui 3 hoteis, quando o usuario seleciona o hotel e passa para o proximo painel, preciso alterar o painel para mostrar os quartos disponíveis, sabendo que cada hotel tem quartos diferentes, so preciso que passa os caracteres de um hotel para teste o resto eu faço, no painel de quartos cada quarto tem um botão em baixo que o usuário seleciona e passa para um painel que tem dois calendários, se um outro usuario ...

    $23 (Avg Bid)
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    Preciso de uma aplicação de turismo, algo relacionado com viagens, recomendações de hotéis, restaurantes, pontos turísticos, etc... . Apenas para a região de Braga, Portugal . A app precisa de ter conexão a um banco de dados e login/registro.

    $232 (Avg Bid)
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    10 ofertas
    Discord Mass DM 6 dias left

    hey i need a dicord tool that works on python, i will insert proxies and tokens and or any captcha key and i need 3 things. Server joiner/leaver. User scraper in server. And mass dm to the users.

    $216 (Avg Bid)
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    4 ofertas
    Custom AOSP ROM 6 dias left

    We are looking for a skilled developer to create a Custom AOSP ROM and applets, and assist with hardware integration. The purpose is to have a unique user interface and features, locking it down to perform only functions that we specify, whilst streamlining access to those functions. We have a specific list of features and customisations that we can discuss in greater detail. Broadly, we need a screen that can communicate with select smart home devices (lights, thermostats, locks, cameras). Later development will include adding controls for smart TV and possibly other devices. We can be flexible with hardware. We are happy to consider an inexpensive off-the-shelf tablet, or a bespoke system built on Raspberry Pi or similar. There will be multiple users and multiple units, so hardware c...

    $1288 (Avg Bid)
    $1288 Média
    30 ofertas

    Hello dear freelancer i need a scriptmicroservice in (prefer python) that will take a list of phone numbers as input, and will check for each phone number whether it has telegramviberwhatsup on that number. the result should be a JSON that has an answer for each phone number.

    $165 (Avg Bid)
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    8 ofertas
    Project for Siddique 6 dias left

    Search Engine code restore on new server. As discussed.

    $150 (Avg Bid)
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    3 ofertas

    while (true) { using (var _httpClient = new HttpClient()) { } } I'm currently using it in the same form as above. However, this initializes the httpclient on demand, but it is not a complete initialization on every request. For example, it is different from shutting down and restarting an application. So I want to reset the application restart level

    $126 (Avg Bid)
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    5 ofertas

    I am looking for an experienced Android developer to help me tackle an issue I am facing with API requests. Specifically, I need assistance in identifying and resolving the API requests that are causing issues. While I do not have any error messages associated with the API request issues, I do have a list of requests that I believe may be the source of the problem. Ultimately, I am hoping to find a developer who can help me to fix these issues and ensure optimal performance of the API requests moving forward.

    $180 (Avg Bid)
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    17 ofertas

    I am looking for a mobile app developer who can create a UI design from Figma and integrate an existing API into the app. The ideal candidate should have experience in developing mobile apps for both iOS and Android platforms. The level of UI complexity required for the app is simple and minimalistic. The API is already developed and ready for integration.

    $420 (Avg Bid)
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    23 ofertas

    Need to write a report on a project. Word count 5000+ words You use AI to write but factually it should be correct and related to the topic. (Reason to use AI is that I have low budget so you can use it but dont copy anything from elsewhere) What I need. Look at the github project and attached zip file, run the simulation html file gievn in the zip. Manipulate the parameters and create simulation hypothesis and results etc. (There is a simulation interface where you can adjust speed and traffic type etc. Need to adjust the simulator and see hwere the traffic jam occurs) You need to explain that "Simulator is web based and do---" After doing all this you need to write a report. Report template is given below. Sample is also attached. (Sample is based on hypothetical data, you just...

    $1230 (Avg Bid)
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    38 ofertas

    I am looking for a programmer to design an XO game on Java. The game should be simple, with basic features and a basic GUI. The ideal candidate should have experience in Java programming and game development. The platform for the game is not specified. DEDICATED BUDGET 5 dollars and rqrd in 1 hour

    $10 / hr (Avg Bid)
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    4 ofertas
    In first box write it 6 dias left

    I am looking for a Java developer to create a web application with an interactive UI. The ideal candidate should have experience in Java and web application development. The application should include user authentication and database integration. The main requirement is an interactive UI that is intuitive and easy to use.

    $19 / hr (Avg Bid)
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    30 ofertas
    Online rummy app 6 dias left

    Online Rummy App Development for Android We are looking for a developer who can create an online rummy app for Android. The app needs to be user-friendly and entertaining for all types of players. Our aim is to provide the best gaming experience to our users. Features: - In-app purchases and rewards system to increase user engagement - Real-time gameplay with smooth graphics and animations - Multiplayer mode for playing with friends or random players - Chat system for social interaction - Daily bonuses and challenges to keep the players motivated Ideal Skills and Experience: - Strong experience in Android app development - Proficient in Java and Android Studio - Good knowledge of game development and graphics - Experience in integrating in-app purchases and rewards system...

    $1422 (Avg Bid)
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    8 ofertas
    java/gradle/git 6 dias left

    I am looking for a Java/Gradle/Git developer to work on a Desktop Application Development project. The ideal candidate should have experience in integrating an existing codebase into the project and be able to handle moderate complexity. Some of the required skills and experience for this job include: - Proficiency in Java, Gradle, and Git - Unit testing - Blackbox testing If you have the above skills and experience, please apply for this project.

    $32 (Avg Bid)
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    10 ofertas

    I need a class jar that extracts the text for text fields and comboboxes from a one page interactive PDF. Can use PDFBox or any other free download JAVA PDF API (SpirePDF, Qoppa JavaPDF, and so on) . The extracted fields need to be posted to a derby db for later manipulation (Derby db File will be included). The PDF is an "exam" where the user selects the answer from the combo box pulldown selections. I will provide current base program jars (using Netbeans 17 and Zulu OpenJDK 17) and an empty class file with the needed variables and imports. Must keep the programming simple with sufficent comments explaning the main methods used.

    $108 (Avg Bid)
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    9 ofertas
    Calling Script - URGENT 6 dias left

    Script to test calls - URGENT I am in need of a calling script for my business using Twilio/Vonage/Other API with the following requirements: 1. script needs to be able to call continuously until asked to be stopped. 2. script calls numbers continuously and randomly from a list of numbers. 3. script uses available numbers randomly to make the calls (numbers from Twilio/Vonage/Other API) 4. script needs to have the ability to set up the time of a call, and how long it should have the call open until it hangs up automatically. 5. script needs to have a very simple UI for setup and running it. Ideal Skills and Experience: - Expertise in creating and implementing calling scripts - Proficient in programming languages such as Python or Java - Knowledge of telecommunication systems and call ce...

    $63 (Avg Bid)
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    11 ofertas

    In need of a skilled android developer to correct web view code for zoom SDK view in a one-page program in Java. The current issue is with the zoom functionality not working. I would like the zoom feature to be enabled by default. I am unsure of the current version of Android Studio and WebView being used. Ideal skills and experience for this job include proficiency in Java and Android Studio, experience with web view code and zoom SDK view, and attention to detail to ensure proper functionality.

    $3 / hr (Avg Bid)
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    9 ofertas

    I am looking for a Python developer to create a chatbot for my website that will primarily serve as a customer service tool. The chatbot will need to be trained using documents and user inputs to provide accurate and helpful responses. Platform: The chatbot will be integrated into my website. User Input Customization: The chatbot will need to have intermediate conversation handling capabilities to better serve my customers. Ideal Skills and Experience: - Proficiency in Python and chatbot development - Familiarity with Natural Language Processing (NLP) and machine learning concepts - Experience with chatbot deployment and integration on websites - Strong problem-solving and communication skills to ensure the chatbot meets my specific requirements.

    $12 (Avg Bid)
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    3 ofertas

    We need Java, SpringBoot, AWS, Terraform and PostgresSQL experienced developer to work for 2 hours a day remotely. We will give 24 to 29k per month

    $351 (Avg Bid)
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    13 ofertas

    Looking for expert android developer with extensive experience in JSON parsing, XML parsing, Layout Designing. I am not looking for just programmer but also work as my partner. I have some ideas to develop android apps. We are small Inhouse development team and wants to add one more android developer In my team.

    $192 (Avg Bid)
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    17 ofertas

    Release Android App Currently in Testing on Google Play We are looking for an experienced developer to help us release our Android app currently in testing on Google Play. The app is in good condition and has no known bugs or issues that need to be addressed before release. We only require minimal support after the release, but we are looking for someone who can provide quality work and is reliable. Ideal Skills and Experience: - Experience with Android app development and release - Knowledge of Google Play Store guidelines and requirements - Ability to provide quality work and ensure reliability - Good communication skills to keep us updated throughout the project If you think you have the skills and experience we need, please apply and provide us with your portfolio of similar projec...

    $117 (Avg Bid)
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    17 ofertas

    Project Title: Edit Telegram App on Android I am looking for a freelancer who can help me edit the Telegram app on my Android phone. Specifically, I want to remove the search bar from the app. Skills and Experience Needed: - Experience with Android app development - Familiarity with the Telegram app - Ability to modify app settings Design Changes: - I do not have any specific design changes in mind, but I am open to suggestions. Timeline: - The timeline for this project is flexible, within a week. Deliverables: - I would like the freelancer to provide a solution and create a loom video to demonstrate the changes made to the app.

    $37 (Avg Bid)
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    7 ofertas

    Con este proyecto mi idea es que me contraten para poder ayudarlos a programar su servidor de Minecraft o simplemente ser un Staff o moderador, ayudante lo que sea para ayudarlos y de la 1.16 para ariba

    $10 - $11
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    0 ofertas

    We are a technology company looking for a developer specializing in artificial intelligence, augmented reality and virtual reality . Our goal is to develop existing commercial projects on the ground into artificial intelligence for the owners of these projects . We require expertise in Natural Language Processing (NLP), Computer Vision, and Robotics. The intended use of the developed AI project is for Research and Development purposes. We prefer a developer with experience in programming languages such as Python or Java, but we are open to other platforms as well. The ideal candidate will possess exceptional problem-solving skills and will be able to provide creative solutions to complex problems.

    $4354 (Avg Bid)
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    12 ofertas

    I am looking for a freelancer to develop a cloud-based windows project management software that can help me manage my tasks efficiently. The specific features I require are task management, time tracking, and resource allocation. The ideal platform for the software would be a desktop application. Additionally, the software should be able to support 6-10 users. The software should integrate gmail, and WhatsApp functionalities. The ideal candidate for this job would have experience in developing similar project management software and be proficient in cloud-based technologies. They should also have expertise in desktop application development and be able to deliver the project within the specified deadline.

    $374 (Avg Bid)
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    12 ofertas
    API Automation for price ACTION 6 dias left

    API Automation for Price Action I am looking for a freelancer who can help me automate pricing updates on my platform using a custom API. The project requires someone who has experience in API integration and automation. The ideal candidate should have the following skills: - Experience in automation of pricing updates using APIs - Proficient in custom API integration - Strong programming skills in Python or JavaScript The project involves the following tasks: - Developing an API automation solution for price updates - Integrating the custom API with the platform - Testing and validating the automation system If you have the required skills and experience, please apply for this project.

    $155 (Avg Bid)
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    42 ofertas

    Title: Matching AI Algorithm Project for Marketplace I am looking for a freelancer who can help me develop an AI algorithm for my marketplace. The main goal of the algorithm is to match buyers and sellers. The level of customization required for the AI algorithm is basic. Skills and Experience: - Experience in AI development and programming - Knowledge of machine learning algorithms - Familiarity with marketplace platforms - Strong problem-solving skills - Ability to work independently and meet deadlines If you have experience in developing AI algorithms and are interested in this project, please submit your proposal.

    $2610 (Avg Bid)
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    23 ofertas
    Minecraft Mod 6 dias left

    Hello! My name is ANKIT, and I'm looking for a Minecraft mod developer to create a great mod for me. I had some specific ideas in mind for the mod I want to create, and I want it to be compatible with the latest Minecraft version. I want this mod to have some really cool features, particularly focusing on new gameplay mechanics. Beyond that, I would like the mod to have a fantasy theme. These factors are important to me, as I believe that it will greatly enhance the overall experience for players. I am looking for somebody who has the skill and experience to create this mod that meets my specifications. This project should also involve extensive testing to ensure that the mod is completely bug-free and well designed. With the right effort, I'm sure that this mod will be great f...

    $12 (Avg Bid)
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    1 ofertas

    I am in need of an experienced Android Studio developer to assist me in fixing runtime errors and importing my project to another platform. I am currently experiencing runtime errors and need help identifying them. The ideal candidate should have experience in Android Studio and be able to work efficiently within an hour. Specific requirements include: - Identifying and fixing runtime errors in my current Android Studio project - Importing the project to another platform - Ability to work quickly and efficiently within an hour - Experience with Android Studio - Strong problem-solving skills and attention to detail

    $28 (Avg Bid)
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    23 ofertas

    I am in need of an experienced Android Studio developer to fix build errors I am encountering. The exact error message will be provided, but it has been identified as a build error. The ideal candidate should have experience in: - Android Studio development - Troubleshooting build errors - Knowledge of the specific Android Studio version being used (version number will be provided) This project will require attention to detail and efficient problem-solving skills. Please only apply if you meet the requirements and have the necessary experience to complete the job successfully.

    $46 (Avg Bid)
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    17 ofertas

    I am looking for a cross-platform JavaScript project that is compatible with web browsers. The main purpose of the project is data management. I prefer that the project be developed using React JavaScript framework. Ideal skills and experience for the job include: - Proficiency in cross-platform JavaScript development - Strong knowledge of React JavaScript framework - Experience in data management - Familiarity with web browsers and their compatibility requirements

    $294 (Avg Bid)
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    16 ofertas

    This app is published play store dec 2022, I am owner & developer Login and I have not source code. It apk built by flutter . Always welcome first good Rating Freelancer first priority I am looking for a developer who can convert an APK file to source code in a correct manner. The APK file is Version 4. I do not require any additional features or modifications in the source code, just conversion and Correct Manner to generate iOS Store SDK. Also Published forth Version apk file to Play Store. My preferred deadline for the project is 1 week. I have no idea Of cost amount bid. Please correct amount placed as your side correct bid, Ideal skills and experience: - Privious Apk Work is Flutter - Experience in converting APK files to source code - Knowledge of Flutter - Attention t...

    $73 (Avg Bid)
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    10 ofertas

    Busco un programador con gran experiencia en AI para que pueda ayudarme a lllevar a cabo un desarrollo, se requiere que la persona que se postule hable español.

    $507 (Avg Bid)
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    20 ofertas

    This app is published play store 2018, I am owner developer and I have not source code. It all built by flutter Always welcome first good Rating Freelancer first priority I am looking for a developer who can convert an APK file to source code in a correct manner. The APK file is Version 4. I do not require any additional features or modifications in the source code, just conversion and Correct Manner to generate iOS Store SDK. Also Published forth Version apk file to Play Store. My preferred deadline for the project is 1 week. I have idea Of amount bid placed as your side correct bid, Ideal skills and experience: - Privious Apk Work is Flutter - Experience in converting APK files to source code - Knowledge of Flutter - Attention to detail to ensure a correct conversionsbuit

    $22 (Avg Bid)
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    8 ofertas

    I am looking for an experienced Google Blockly developer to help with a specific project that I have in mind. The ideal candidate should have intermediate levels of experience with the software. This project will require more than 2 weeks to complete. If you believe that you can provide the necessary skills and dedication to complete the task successfully, please get in touch with me! We will start with a simple project with <10 blocks and then once we are successful with it move onto a larger project in Blockly.

    $4359 (Avg Bid)
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    19 ofertas

    I am looking for an experienced Android developer to fix a simple bug in my AR measurement app. The bug is related to the length measurement feature and is currently affecting all devices. I need this fixed urgently, within 24 hours. The camera feature used to measure distance between points doesnt capture image to upload to server and I need list of files from firebase server in activity. If you have the necessary skills and experience, please apply with your proposal and relevant portfolio.

    $15 (Avg Bid)
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    4 ofertas

    I am looking for an experienced programmer to develop an application for validating and converting my Excel files into CSV files. The application should be able to validate and convert all data types, including dates and special characters. I prefer the application to be developed in Python but other programming languages such as Java will also be considered. The size of the Excel files to be processed ranges from 1,000 to 10,000 rows. This project requires strong programming and data analytics skills. If you think you have the right skills for this, I would love to hear from you. Thanks!

    $90 (Avg Bid)
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    30 ofertas

    Cerco un sviluppatore per server pubblico prefatto da un setup. È stato già iniziato il progetto, mi serve qualcuno che lo finisca in brevi tempi. Cosa mi serve: - Sviluppo server completo PUBBLICO - Traduzione di TUTTI i plugins

    $94 (Avg Bid)
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    2 ofertas

    I am looking for someone who can assist me with connecting my MySQL server on Ubuntu to my web Java application. Specifically, I need help with creating a user in MySQL and setting up full access for the Java application to read, write, update, and delete data from the database. Ideal skills and experience for this project include: - Proficiency in MySQL and Java - Familiarity with Ubuntu server - Experience in setting up database access for Java applications - Strong problem-solving skills to troubleshoot any issues that may arise during the process.

    $15 (Avg Bid)
    $15 Média
    23 ofertas

    I am seeking a freelancer who can integrate blockchain technology into both my document management system and property management. The ideal candidate should have experience in working with Hyperledger, as this is my preferred blockchain platform. The project requires the following features and functionalities: - Identity management - Smart contracts - Tokenization The successful candidate should be able to deliver a seamless integration of blockchain technology into my existing systems, ensuring the security and accuracy of all data. Strong communication skills and attention to detail are also essential.

    $16 / hr (Avg Bid)
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    I want you to create a learning website for me where I can post my articles on different topics related to java , spring framework etc and the visitors can read and comment. I will also need a java compiler embedded within that website where the visitor can run the java code. You can take references from multiple websites out there like w3schools , tuturialspoint , geekfrgeeks , howtodoinjava etc.

    $134 (Avg Bid)
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    14 ofertas
    Android app 5 dias left

    I am looking for an Android app developer to create a productivity app with specific features in mind. The app should have a moderate level of design customization. Ideal skills and experience for this job include: - Proficiency in Android app development - Experience in creating productivity apps - Ability to implement specific features requested by the client - Understanding of design customization options and ability to deliver a moderately customized app.

    $593 (Avg Bid)
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    167 ofertas

    I want to make an Android app for renting a machine required for building homes like a hammer machine, drilling machine, etc.

    $70 (Avg Bid)
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    15 ofertas
    I Need Android App Developer 5 dias left

    I am looking for an Android App Developer who can help me create an app with advanced features. The main purpose of the app is not specified. However, I have a specific design in mind which the developer should adhere to. Ideal skills and experience for this job include: - Proficiency in Android App development - Knowledge of advanced features - Ability to work with specific design guidelines - Communication skills to ensure a smooth collaboration process

    $118 (Avg Bid)
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    24 ofertas
    Minor changes of an existing app 5 dias left

    I am in need of a developer to make minor changes to my existing app. The app is available on both iOS and Android platforms. The main area of focus for this project is the user interface. Ideal skills and experience for this job include: - Proficiency in mobile app development for both iOS and Android platforms - Experience with user interface design and implementation - Familiarity with programming languages such as Java and Swift - Attention to detail and ability to work efficiently to complete the project in a timely manner. Overall, I am looking for someone who can bring a creative touch to the app's design while also ensuring that it remains user-friendly and responsive. Developer must agree to work over anydesk on this project.

    $13 / hr (Avg Bid)
    $13 / hr Média
    74 ofertas

    Hello! I am looking for someone to create a Discord bot that awards users with points for correct answers. The bot will ask users to input a 4-digit code that is given by a mobile game. For a correct answer, the user will be awarded 1 point. If the user gets it wrong, there is a penalty: they cannot try again until the mobile game will grant another code upon completing a few tasks. The points that are granted by the code should be stored somehow (I don't know if it's possible to achieve that within Discord). Please let me know if this is something you can do and we can discuss further details. Thanks!

    $624 (Avg Bid)
    $624 Média
    54 ofertas

    I am looking for a freelancer who can help me integrate Bluetooth functionality into my Android app to connect with Arduino/STM32 device. The ideal candidate should have experience in Bluetooth integration and knowledge of Android app development. The project will only involve Bluetooth integration and not the entire app development. The end goal is to create a seamless communication between the app and devices for data exchange as well as effective integration with the App services. I have the source code of my App

    $192 (Avg Bid)
    $192 Média
    36 ofertas


    $307 (Avg Bid)
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    7 ofertas
    develop android app + admin 5 dias left

    detail is in attached document i need it by coming monday.

    $250 - $750
    $250 - $750
    37 ofertas

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