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
Hiring Java Developers on Freelancer.com gives you access to a global pool of talented professionals who can deliver high-quality solutions tailored to your needs. Our platform makes it easy and convenient to find, hire, and collaborate with skilled Java experts from around the world. So why wait? Bring your ideas to life by posting your own project and hiring a Java Developer on Freelancer.com today!Od 269,224 recenzí, klienti hodnotí našeho pracovníka Java Developers 4.86 z 5 hvězd.
Zaměstnat Java Developers
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!
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
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.)
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.
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.
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.
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.
I want to make an Android app for renting a machine required for building homes like a hammer machine, drilling machine, etc.
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
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.
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!
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
JAVA TCP IP COMMUNICATION PROGRAMMING CLASSES FOR CONCOX V5 GPS TRACKERR
detail is in attached document i need it by coming monday.
Expert in Uml 2.0, more specifically Spem and mastering BPMN when it comes to making diagrams. Primordial who speaks Spanish. I cannot offer a lot of money. I repeat, it is mandatory to a person who speaks Spanish. Thank you
I'd like to create a form that can be in case of car accident. A jointly-agreed statement for insurance purposes. Such a form already exists in Europe, issued in paper format and it is used to collect all the datas regarding the event such as car plates, addresses, names of people envolved, and all the informations used by the insurance company to manage the accident in order to pay the damages. In italy an app more or less working already exist whose name is : "ASSISTO CONSTATAZIONE MOBILE". Enclosed you can find tha paper form that usually is filled in case of accident.
I'd need an auction expert to convert "Post a Project" here on Frelancer to and adaptated "Post an Auction for developers"... The whole system allows me to: 1) auto finance a big project in partnership with developers that want to be owners of a corporation 2) enroll the right developers as fifty fifty owners of each physica Centers of Excellence (the important selling stuff). WP ERP expert please is mainly required Please do not reply as a bot, but see the attachement and reply to make me understand you have got it marketing, execucution , performance, hard coding, java, wordpress, php, qnx, RTOS, embedded software, WP ERP
I'm looking for an experienced and reliable freelancer to complete a website development project. I am in need of an e-commerce website and would like it to be custom-built from the ground up. While I have some design and functionality ideas in mind, I am open to any fresh and creative suggestions that you might have. I'm looking for a freelancer who is dedicated to bringing the highest quality work, and someone who can complete the project efficiently and on time. If you think you're the right person for the job, please get in touch! You can visit my reference website at for an idea of what I'm looking for.
I am looking for a skilled Android app developer to build an app that will allow users to schedule both personal and work-related tasks. The app will require user authentication using email and password. The following are the specific features that I have in mind for the app: - Create and edit tasks with due dates and times - Set reminders and notifications for tasks - Categorize tasks into personal and work-related - Add notes and attachments to tasks - Share tasks with others and assign tasks to team members - View tasks in a calendar or list view - Sync tasks across devices Ideal skills and experience for this project include: - Strong knowledge of Android app development using Java or Kotlin - Experience with user authentication and data security - Familiarity with APIs and third-...
Contract Duration- 12 months 8:30AM to 5:30PM PST - Preferred /2:30AM to 11:30AM PST – (Offshore) Must have advanced capabilities in the following (at least 8 years experience): • Oracle PL/SQL • Oracle R12 Applications (AOL) • SQLLoader • Oracle Forms • Oracle Reports • Oracle Workflows • Oracle OAF • Oracle API • Oracle Interfaces • Unix scripting • Oracle Order Management • Oracle Inventory • Oracle Warehouse Management • Oracle Shipping • Oracle Receivables • Oracle Payables • Oracle Fixed Assets Must be knowledgeable in the following: • EDI (Electronic Data Interchange) • JIRA Service Management • Bitbucket • SQL Developer • Toad • Wind...
I need an experienced Android app developer to modify my existing app in Java and add new functionalities. My specific requirements are: - New functionalities: I need additional features added to my current app. - UI/UX improvements: I want the app to have an intuitive and user-friendly interface. - Bug fixes: I need any existing issues with the app to be resolved. As for design preferences, I have a specific design in mind that I would like to be incorporated into the app. I am looking for a developer who can match my design vision and bring it to life. The modifications and features need to be implemented within a week, so I need someone who can work efficiently and deliver the project on time. Ideal skills and experience for the job include: - Strong proficiency in Java for Andro...
Must have: 1. Spring Boot – Java 8, Spring Core, Spring Boot, Spring MVC, Swagger, Tomcat 8, Maven, Jenkins, SVN, GIT, Postman/Newman, RESTful Services, Containers 2. Excellent verbal communication skills is a MUST. 3. Minimum 4 years of experience is required in service provider companies.
I am looking for a cloud-based software developer who can help me generate custom reports for my project. I am open to suggestions regarding the software platform and programming language to be used. The reports that I need are custom reports, so the developer must have experience in creating reports according to specific requirements. I am not sure if the software needs to be integrated with any existing systems, so guidance in this regard would be appreciated. Ideal skills and experience for this job include: - Experience in cloud-based software development - Proficiency in creating custom reports - Knowledge of various software platforms and programming languages - Ability to provide guidance on system integration, if required.
I'm looking for a freelancer to help fix bugs in my Android app. I'm experiencing functional errors, so I'm looking for someone to fix the general functionality of the app. I'm not looking for a full review - I just need bug fixing only.
I am looking for an experienced Android developer who has experience with Flutter and Kotlin. I need someone who can help me with updating my existing app and fixing some bugs. Key Requirements: - Experience with Flutter and Kotlin - Strong knowledge of Android development - Ability to improve UI and add new features - Knowledge of bug fixing - Experience in ChannelMethod and Platform specific integration in flutter The project is an immediate fix and needs to be completed as soon as possible. If you are interested in this project, please contact me with your experience and availability.
We are seeking a UiPath expert to automate repetitive tasks in a simple process. The main goal of this project is to increase productivity by streamlining our workflow and improving data accuracy. The client has a detailed process in mind for automation, and we require someone with experience in UiPath to help us achieve our goals. The ideal candidate will have the following skills and experience: - Proficient in UiPath and automation technologies - Strong understanding of process automation and workflow optimization - Experience in automating simple processes - Strong attention to detail and ability to improve data accuracy - Effective communication skills to collaborate with our team If you have a track record of successfully automating repetitive tasks and improving productivity, we w...
I have a small Java powered website () running on a Win10 machine. I do not have a static IP so I have a free domain for remote access to the website. I purchased a Comodo certificate but I do not know how to make a CSR and get the certificate installed. I need help to get my certificate as a .pfx or .p12 file.
Title: Looking for software engineers and developers to help with computer science and software engineering challenges. We are looking for a software engineer to help our students with their homework. Assignments are given at the University of Computer Science. The client is a student and the student's money is tight, so the budget is a bit small, but the work is very simple and easy. And because we have relationships with many universities, we can provide a lot of work on an ongoing basis. If you have the skills and experience you need, we look forward to hearing from you. Only In Pakistan, India and Bangladesh.
Se Requiere: Tengo creada una interfaz grafica de usuario GUI desarrollada en Python la cual funciona perfectamente Necesito el mismo desarrollo en el lenguaje JAVA - C# Se debe crear un ejecutable
Web Service Integration project duration 7 days Register IP Address : Request from white listed IP addresses will be accepted. Push HPC data to server and 10 fileds data insert with the help of json
I am looking for someone to set up the Android SMS/MMS Sending Library from GitHub on my Android 12 phone. I am willing to pay $200 for the Android Studio files if you can get it working. Requirements: - Experience with Android Studio - Experience with Gradle version conflicts - Knowledge of SMS/MMS Sending Library Issues: - I have attempted to set up the GitHub project, but encountered a Gradle Version Conflict - I have tried solutions to resolve the conflict, but they did not work If you have the necessary skills and experience, please reach out to me to discuss the project further.
I am looking for a developer to create a SIP Softphone that is compatible with Android operating systems. The main requirement of the Softphone is to make phone calls. I should be able receive inbound calls and read any dtmf tones Ideal skills and experience for this job include: - Experience with SIP Softphone development - Strong knowledge of Android operating system - Experience with VoIP and telecommunications - Familiarity with SIP protocol - Strong attention to detail and ability to deliver high-quality work - Excellent communication skills to ensure project success.
Android Studio Developer Argumented Reality App
I am seeking a React Native tutor with intermediate expertise to help me learn specific topics. I am looking for a few tutoring sessions to improve my skills and knowledge in React Native. The primary goal of the tutoring sessions is to learn specific topics. Ideal skills and experience for the job: - Expertise in React Native, React native package development. - Intermediate level knowledge in Native Modules. - Ability to build package / libraries or components for React Native using java or kotlin.
I am looking for someone with experience in deploying Azure Functions using .zip files, specifically in Java. The ideal candidate should be proficient in using the Command Line Interface (CLI) for deployment. The project involves troubleshooting and resolving deployment failures that I am currently experiencing. The specific issues I am encountering are related to deployment failures, and I need someone who can help me identify and fix the underlying issues. If you have experience with Azure Functions deployment and are comfortable using CLI, please reach out to me. Thank you. We need to help someone on the call where we have the functions code available in Visual Studio
I am looking for a freelancer to develop a Digital Signature Signer. This project requires the following skills and experience: - Proficiency in developing software for PDF signing - Experience with implementing basic encryption for added security - Knowledge of industry compliance standards The digital signature signer will be used to sign PDFs with basic encryption. In addition, the system should allow for multiple signatures on a single document. As well as multiple doc can sign in single click The following features are required: - Ability to sign PDF documents - Basic encryption for added security - Capability to handle multiple signatures on a single document Java Developer preferred to development of desktop or cloud app If you have experience in developing similar projects, ple...
I am looking for an experienced Android developer who can create a social platform application for our existing business. The app should include in-app messaging as a key feature. We would like users to be able to authenticate through social media login. Other features such as user profiles and photo and video sharing are not required at this time. Ideal skills and experience for this job include proficiency in Android development, knowledge of social platform app development, and experience with social media login authentication. The creator will be awarded with profit sharing, subject to commercialization of the app.
I am looking for a skilled developer to rebuild my application with new features in mind. The current platform is not specified, but the ideal candidate should have experience with iOS, Android, and web-based applications. The main goal for rebuilding the application is to add new features and improve the user experience. The project completion deadline is moderate, with a timeframe of 3-4 weeks. If you have experience with rebuilding applications and can work within this timeframe, please apply.
I am looking for a freelancer to assist me in automating my travel agency. The specific tasks I need to automate include booking flights and hotels, scheduling tours and activities, and managing customer data. Currently, my system for managing travel bookings and customer data is a basic Springboot based Miniproject. I am looking for someone who can make basic changes in code and UI only for the user part. The timeline for completing the project is urgent - within 1 month, and I would prefer to have it completed today or tomorrow. The ideal freelancer for this project should have experience in coding, UI design, and automation.
Automation of Travel agency (only user part) Tasks to automate: - Booking and reservations Existing systems integration: Not sure yet Level of customization required: Basic Ideal skills and experience: - Experience with Springboot based Miniprojects - Knowledge of Springboot and HTML css Js
We have our Automation of Travel agency project user part. just need to verify that Springboot project need to verify because page is not working
Topic Name: Learning App Introduction It's an application for learning online. This application basically contains functionalities - login, and register for both admin and student. Students can enroll on new subjects and topics. Students can also search for topics and enroll on them. Admin can create new topics and subjects so students can subscribe to them. It consists of 2 panels admin and student. Admin can have permission to create a new course, update an existing course, or delete the course. Modules 1. Admin Panel: 1. Able to create a new course for students. 2. Update existing course. 3. Delete existing courses. 2. Student Panel: 1. Login and Register into the system. 2. Enroll on a particular course. 3. Cancel the course. 4. search course by id 5. Search course ...
I am looking for a freelancer to develop an Android app for drivers. The ideal candidate should have experience in Android development. The app should have GPS navigation capabilities to help drivers navigate to their destinations. In addition, the app should have driver performance tracking functions to collect and analyze data on the driver's performance. The following features are required for the app: - Android platform - GPS navigation - Driver performance tracking
Objective of the project: Implement an additional feature in the trackerD firmware to add a rules engine to BLE scanning. This function will allow you to filter the iBeacons based on their proximity to the GPS, using the RSSI of the signal. In addition, the nearest iBeacon is required to stay within a predetermined RSSI range for at least 1 minute before the device will send an upstream message, which will include the iBeacon's UUID. Tasks to perform: 1. Existing firmware analysis: The developer will need to analyze the current trackerD firmware to understand its structure and how existing functionalities are managed, especially those related to obtaining GPS location and searching for iBeacons via BLE . 2. Design of the architecture: Based on the analysis of the existing firmware...
A short job for a quick programmer who understand functions in a protocol as guid. (Perfer a Chinese fluent language)
I need external bot/system that allow me to find the best parameter on specific indicator and candle stick Please show your sample deveveloped bot I need to collect live data from the web and candle stick, I have attached the document for data collection from web. Mins Intervals are in Dropdown box, I can choose any minutes interval, I need you to collect Last 5 candle data from the Excel in the web and other details for each token, I will give token name in the excel, It will automatically display the rows of data. If i chanage time interval it will display those data only. Please view the attach file. So the external bot will auto backtest for every parameter combination possible to find which settings have the best results. I need an intelligent programmer, who can see future problem...
I am looking for a skilled developer to create a video player and streaming app that is compatible with both Android and iOS platforms. The app should be able to stream both pre-recorded videos and Network Streaming Additionally, I have specific features in mind for the video player. The ideal candidate should have experience in creating custom video players with the following features: - Ability to adjust playback speed - Pause , play , forward reverse 10s - Subtitle support / Multi Audio Track - Video quality selection - Chromecast integration - Ability to download videos for offline viewing - Uses Less memory streaming and download. - Easy ads integration on front and inside videos, Add rewards ads for downloading video and improving download speed - Also it needs to be connect to my...
I am looking for a skilled developer to create a program that integrates my Fritzbox VoIP calls with a conversational AI chatbot. The goal is to enable voice calls to be converted to text, send the text to a ChatGPT model trained with knowledge about my company, generate a response, convert the response text to audio using Google Text-to-Speech API, and stream the audio file as a reply through my Fritzbox. The workflow of the program should be as follows: Receive incoming VoIP call on the Fritzbox. Convert the voice call to text using a suitable speech-to-text engine like Google. Send the text to a ChatGPT model that has been trained with information specific to my company. Generate a response from the ChatGPT model based on the input text. Convert the response text to audio using Google ...
3-tier architecture, monolith architecture microservice architecture More details: Is this project for business or personal use? Personal What type of project is this? Web Development What are the primary goals for your website? Informational