Java is an object-oriented, general purpose programming language used to create and develop a wide range of software applications ranging from simple desktop programs to full-fledged enterprise solutions. Java enables developers to create programmable components and modules that can be easily reused and provide high levels of security, scalability, and reliability. It is one of the most popular programming languages in the world today and due to its cross-platform features, is found on many different devices.

What can a Java Developer do for a client? As an experienced Java Developer, you are able to provide assistance in designing and implementing software applications with high levels of quality. With your expertise, you are able to create solutions that run on any platform and integrate with external applications such as databases with ease. From creating high-performance web applications to redesigning existing solutions with the latest technology stack, clients can hire you for a variety of development needs.

Here's some projects our expert Java Developers made real:

  • Developed complex enterprise solutions, from the back end to the front end
  • Created mobile solutions for both Android and iOS platforms
  • Designed secure software architectures designed to scale
  • Built detailed business logic in custom software systems
  • Connected backend databases with various frontend solutions

With so many development options available with Java, it's no wonder it's such a widely used programming language today. Our experienced Java Developers have superior programming skills that help create solutions of all scopes and sizes -- whatever your needs may be. Get your perfect project at Freelancer.com by hiring an expert programmer who has the skills you need to turn your ideas into reality. Post a project today and find a qualified Java Developer to bring your project life!

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    ??????? ??? Node Js Developer - ???? ???? ???????? - ???? ?????? ??? Job description:- - Extensive knowledge of JavaScript, web stacks, libraries, and frameworks. - Developing high-performance applications by writing testable, reusable, and efficient code. - Implementing effective security protocols, data protection measures, and storage solutions. - Documenting Node.js processes, including database schemas, as well as preparing reports. - Keeping informed of advancements in the field of Node.js development Experience :- 4 - 5 Years Perks and Benefits : Work From Home & Office 5 Days/Week Day Shift Preference: Immediate Joiners Job Type: Full-Time( 8hr ) Contract-based Job

    $13 - $40
    $13 - $40
    0 bids

    Looking for full stack web and mobile developer. I will inform you about detail via private chat. I will hire someone who read very carefully. Best regards.

    $27 - $222
    Sealed
    $27 - $222
    69 bids
    Api connect 6 days left

    Connect api to Google sheets to push data every second

    $202 (Avg Bid)
    $202 Avg Bid
    17 bids
    AI Mentor for Middle Schooler 6 days left
    VERIFIED

    We are looking for a graduate student with experience in artificial intelligence (AI) and a passion for teaching to mentor our middle school son in AI and machine learning. The ideal candidate will have a strong understanding of AI concepts and programming languages such as Python, Java, or R. The mentor will be responsible for teaching programming concepts and problem-solving skills, and providing support and guidance in relevant competition preparation in the future. Responsibilities: • Develop a personalized learning plan for the student • Teach programming concepts and problem-solving skills to a middle school student • Provide guidance and support for AI competition preparation • Evaluate the student's progress and adjust the learning plan as needed &b...

    $191 / hr (Avg Bid)
    Local
    $191 / hr Avg Bid
    5 bids

    Sr. Java Developer – specialising in Programming or Implementation MUST have exp in Sapiens – IDIT Remote • 5+ years of experience in Java technologies. • Worked on Core JAVA, EJB (Enterprise Java Beans), Web services (REST and SOAP), JSP, HTML and Servlets. • Worked on databases like MSSQL, SQL. • Sound knowledge of Object-Oriented Programming (OOP) Patterns and Concepts. • Familiarity with different designs and architectural patterns. • Skill for writing reusable Java libraries. • Understanding of the concepts of MVC (Model-View-Controller) Pattern, JDBC (Java Database Connectivity), and RESTful web services. • Ability to ...

    $2292 (Avg Bid)
    $2292 Avg Bid
    9 bids

    We have to make an android app. which is based on the latest technology. And we need this application for teaching purpose, there will be only three flows inside it, Which is admin and teacher and student hai. Reference : chandra classes

    $657 (Avg Bid)
    $657 Avg Bid
    47 bids

    I need help with a project that requires a Pronto Xi POS Developer to help with creating new functionality for a finance module. The technology I am currently using is Java, so the developer needs to possess a good understanding of this language. This position is perfect for a remote candidate, as I can leave the Project Manager on site and require the Developer to work remotely. The responsibility is to design and develop new functionality, based on customer requirements and systems design documents. The Developer will then report back to the Project Manager on their progress, seeking assistance and guidance when necessary. This developer must have previous experience working on Pronto Core Modules. anyone without previous Pronto Experience will not be awarded the project.

    $66 / hr (Avg Bid)
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    5 bids

    My name is [Afrin] and I'm looking for a talented freelancer to develop a customized Java web project for me. Specifically, I need the work to be done using the MySQL database. I'm hoping to find someone who has a great understanding of Java web application and will be able to provide a powerful and intuitive user experience. The project needs to be delivered on time and at a reasonable cost. If you think you are the right fit for this project, please get in touch and show me what you have built in the past. I'm counting on you to deliver a competitive and world-class solution on my project. Requirements details attach below ..................... Rememebered: you can't do anyhting outside this file requirements .Must be complete all file all requirements.

    $23 (Avg Bid)
    $23 Avg Bid
    2 bids
    Securing Android Root and SSL 22 hours left
    VERIFIED

    Greetings, We have android Application, where we need to close our VAPT Observations in 2 High Points. 1. Root Bypass using Magsik (Denylist) 2. SSL Pinning Bypass using BurbProoxy and Void Certificate. Need to Complete the task in 24 Hrs.

    $165 (Avg Bid)
    Urgent
    $165 Avg Bid
    5 bids

    The textual resources and materials that offer instructions and information about a software program are referred to as software documentation. It consists of API documentation, release notes, installation instructions, and user manuals. Software documentation serves to inform developers on the design, architecture, and functionality of the software as well as to assist users in understanding how to use it successfully and efficiently. Additionally, clear documentation can make it easier for users and developers to work together and can increase the quality of software by lowering errors and misunderstandings. Users should be given all the knowledge they need to utilize the software effectively in clear, simple, and organized software documentation.

    $16 / hr (Avg Bid)
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    3 bids

    I am looking for a freelancer to develop a design pattern for Key Word in Context (KWIC) using both Graphical User Interface (GUI) and Command-line. The design pattern must utilize the Abstract Factory, Singleton, Builder, and Prototype patterns and must be capable of processing text-based inputs. The project should allow for easy implementation of code and follow good coding practices. The design pattern should also be flexible enough to accommodate changes and additional features as requested. The freelancer should be experienced in designing user-friendly interfaces and be committed to producing a final product of the highest quality.

    $232 (Avg Bid)
    $232 Avg Bid
    8 bids

    I am looking for a freelancer to develop a design pattern for Key Word in Context (KWIC) using both Graphical User Interface (GUI) and Command-line. The design pattern must utilize the Abstract Factory, Singleton, Builder, and Prototype patterns and must be capable of processing text-based inputs. The project should allow for easy implementation of code and follow good coding practices. The design pattern should also be flexible enough to accommodate changes and additional features as requested. The freelancer should be experienced in designing user-friendly interfaces and be committed to producing a final product of the highest quality.

    $199 (Avg Bid)
    $199 Avg Bid
    7 bids

    I am looking for a freelancer to develop a design pattern for Key Word in Context (KWIC) using both Graphical User Interface (GUI) and Command-line. The design pattern must utilize the Abstract Factory, Singleton, Builder, and Prototype patterns and must be capable of processing text-based inputs. The project should allow for easy implementation of code and follow good coding practices. The design pattern should also be flexible enough to accommodate changes and additional features as requested. The freelancer should be experienced in designing user-friendly interfaces and be committed to producing a final product of the highest quality.

    $290 (Avg Bid)
    $290 Avg Bid
    8 bids
    Location finder 6 days left
    VERIFIED

    Can you get location from an android phone number?

    $636 (Avg Bid)
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    38 bids
    Database Project -- 4 6 days left
    VERIFIED

    B+ trees and b- trees and knowledge on Hashtables can be helpful.

    $27 (Avg Bid)
    $27 Avg Bid
    8 bids

    For this project, I am looking for a highly skilled developer that is proficient in Java, PHP, and Bootstrap to create a full page design. The project will be used solely for personal purposes, so the level of complexity is required to be complex. I need the developer to create a finished, professional-looking design within a reasonable timeline. The design must be optimized for all devices and browsers. Ideally, I am looking for someone that has done similar work before, as I need this project to come out as high-quality as possible. If you think you have the skills and knowledge to deliver a successful product, please contact me.

    $250 (Avg Bid)
    $250 Avg Bid
    8 bids
    Branded TTLock App 6 days left
    VERIFIED

    We're interested in using a branded version of the native TTLock app to use on our business center. Our project includes branding the TTLock SKD and disabling/removing some features that are not needed. Apps needed for Android & iOS.

    $457 (Avg Bid)
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    16 bids

    Need to recode Javascript code which can pass chrome as URL is getting flagged. Who can encrypt files and put java full screen code to auto refresh get to full screen

    $142 (Avg Bid)
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    3 bids
    make it work 6 days left
    VERIFIED

    I wii pay 1,000 for any one who can get this to work with no bugs ,ads ,and in app purchase The reason I'm so freely posting the source code is. I know for sure that only the most experienced developer will be able to fix it Please do not inquire without checking code first There will be no prerelease of funds

    $1598 (Avg Bid)
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    34 bids

    We are looking for a skilled developer with experience in Apache Camel, Spring Boot, JAXB, and Maven to update our project. The project currently imports Java XML files from an existing data feed and parses them using JAXB and Maven to generate classes from XSD files. We are updating the XSD files and need to update the Java packages and dependencies used by the project. The ultimate goal is to build the project with the new XSD files and classes. Requirements: Strong knowledge of Apache Camel, Spring Boot, JAXB, and Maven Experience with updating XSD files and Java packages Ability to build and generate classes from XSD files using Maven Experience with testing and debugging complex code Strong communication skills and ability to work collaboratively with our team Please provide exampl...

    $122 (Avg Bid)
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    10 bids

    I'm looking for job support for both RectJs and Java. I need someone who can provide immediate feedback, and is willing to work within 24 hours in order to provide troubleshooting, debugging and bug fixing support. This person should have an in-depth understanding of both RectJs and Java with a passion for problem solving and providing exceptional service. The job support should be timely, thorough and professional. this giig is on monthly basis daily 2 hrs (monday to friday)

    $440 (Avg Bid)
    $440 Avg Bid
    11 bids

    I am looking for someone to help with the configuration of DCM4CHEE and OHIF Viewer applications. Specifically, I am looking for someone who can perform a Basic Setup for the applications, without needing an API integration or assistance on additional components.

    $258 (Avg Bid)
    $258 Avg Bid
    13 bids

    I am getting the error message when i tried to install app which is in testing phase like "This app isn't available for your device because it was made for an older version of Android." on android 13.

    $120 (Avg Bid)
    $120 Avg Bid
    16 bids
    MiniJava Refactoring -- 2 6 days left
    VERIFIED

    Hi there, I was using an older library with a Java program, it's a bit complex, and I basically needed someone who knows the language well to help me during my conversion to the new library. I basically need a java expert, and someone with knowledge in compilers would be helpful. Knowledge of MiniJava Grammar and JavaCC are required.

    $48 / hr (Avg Bid)
    $48 / hr Avg Bid
    9 bids
    Java_Full_Stack 6 days left
    VERIFIED

    I need tutoring on the following technologies. I want to learn the following java, spring boot, hibernate, rest, soap, jms,mysql, MongoDB/Cassandra,angular, react, html, CSS, and javascript. If anybody knows all or some of the above technologies highly encouraged to apply.

    $15 / hr (Avg Bid)
    $15 / hr Avg Bid
    26 bids

    We need to develop an App for Android that can send to an our web server or to a Mysql db the smartphone phone number (it can be taken with Java, I think) and latitude and longitude repeated every 30 seconds(to can use them to show the smartphone moving position on a map during transfer by car). The App must work in background even when the smartphone is into automatic block.

    $785 (Avg Bid)
    $785 Avg Bid
    71 bids
    Various tasks on Flutter app 6 days left
    VERIFIED

    I have various Flutter development tasks. Please read the docx attached along with the screenshots. Long term partnership for right developer. ************ ONLY APPLY IF YOU HAVE ACES TO TIKTOK ************ READ ATTACHMENTS CAREFULLY BEFORE POSTING PROPOSAL ************ FIXED BUDGET, NON-NEGOTIABLE

    $97 (Avg Bid)
    $97 Avg Bid
    24 bids
    MiniJava Refactoring 6 days left
    VERIFIED

    Hi there, I was using an older library with a Java program, it's a bit complex, and I basically needed someone who knows the language well to help me during my conversion to the new library. I basically need a java expert, and someone with knowledge in compilers would be helpful. Knowledge of MiniJava Grammar and JavaCC are required.

    $46 / hr (Avg Bid)
    $46 / hr Avg Bid
    28 bids

    I'm looking for a talented app developer to build me a crypto wallet app for the Android platform. I'm in need of someone with enough know-how and expertise to create a secure and reliable wallet app that functions according to my specifications. I can make the necessary design elements available, with the necessary guidance on how I'd like the app to be designed. Additionally, I do have a preferred payment gateway for the app, but am open to suggestions if it isn't feasible. The need for this project is urgent, so I'm looking for someone who can start and finish the app quickly and effectively.

    $474 (Avg Bid)
    $474 Avg Bid
    21 bids

    Hi Team, my is site is , falling when access from corporte network. for daynmaic data, calling this backedn --> Error : due to Error : This URL is categorized as a security risk I entered my backend site --> -> getting error : Error : This URL is categorized as a security risk i want to solve this

    $43 (Avg Bid)
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    6 bids

    I own a recruitment business based in the UK and I recruit Nurses and HCAs (Health Care Assistants) from overseas. Currently, the process has many manual processes, which makes the process lengthy and cumbersome. I want to build a web application which reduces the manual steps by automating the process as much as possible

    $1141 (Avg Bid)
    $1141 Avg Bid
    87 bids

    I have Android 10 running on a Galaxy S9 smartphone. I want to run the 5 Gstreamer example apps on the phone. They require the NDK to run. They are listed here: I need the examples working on the Android Studio emulator for the Galaxy S9. I need the source code and project files once you have got these examples working and I would like the code converted to Kotlin. N.B. Someone has done some work to get the examples running here but this information is out of date: There will be follow-up work once you provide me with the 5 working tutorial apps. All work must be done in Android Studio.

    $369 (Avg Bid)
    $369 Avg Bid
    12 bids
    Build Android APP 6 days left
    VERIFIED

    I need the development of an android app with few pages, but with integration to an sdk for card machine. The system that needs to be integrated is , it would not need a database in my view because there is already an application in Bubble and could be used as a database for integration The screens would be login and ticket sales, the system would basically make a sdk call with the payment method I sent above and make the payment at the machine.

    $373 (Avg Bid)
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    29 bids
    Android developer -- 2 6 days left
    VERIFIED

    There is one problem in my android app. Remote key event focus problem using dpad. I need an experienced dev

    $41 (Avg Bid)
    $41 Avg Bid
    10 bids

    Hi, I need someone to implement a compiler for the language, generating SSM assembly code. The source code has tests in it so you can test it the compiler passes the tests. That should make it easier to do the tasks. The pdf has more instructions in it. If you are interested, let me know and I will send the source code via messages. Please don't waste my time and yours if you are not experienced in what to do. Thanks

    $36 (Avg Bid)
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    2 bids

    Introduction A web application to which people can mark the places they’ve travelled to before (e.g., On Google Maps or any other kind of map, the places which have been travelled to can show a different colour or have a special mark). Application Idea The purposes of the app can be included: 1. Personal record-keeping: Some people like to keep track of where they have been for their own personal reference or to look back on their travels later in life. 2. Memory preservation: Recording the places visited can help preserve memories of the sights, sounds, and experiences encountered during the trip. (Cloud tech can be used here. Save photos/videos in the (google) cloud.) 3. Planning future trips: Keeping track of the places visited can help in planning future trips by prov...

    $1120 (Avg Bid)
    $1120 Avg Bid
    4 bids
    Website development 8 hours left
    VERIFIED

    I am looking for a talented website developer to help me bring my idea to life as soon as possible. I'd like to develop a website in order to search for datasets from a triplestore (developed ontology). To this end, I'm looking for someone who is an expert in Django, java (java jena), and SPARQL language. To provide a reference - it is not as complicated as the following website, but generally, it is a bit similar:

    $574 (Avg Bid)
    Urgent
    $574 Avg Bid
    64 bids

    Scrape 2200 LinkedIn profiles for required fields of data. Highly experienced programmer. Only if you can start right away and can get it done in 24 hours. Write LINKEDIN at the starting of your proposal.

    $190 (Avg Bid)
    $190 Avg Bid
    19 bids

    to buy and sell my goods automatically on a certain site using the api of the site, to regulate the price of the items on sale, to apply the buy-sell strategy I have created within the scope of certain data, to constantly check the prices of the items in the market and to buy and sell according to the strategy I have established, etc.

    $23 (Avg Bid)
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    7 bids

    am looking for a developer, to develop a WhatsApp chatbot, where one can make an order and confirm it through WhatsApp

    $61 (Avg Bid)
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    9 bids

    We need an billing software for our client immediately

    $393 (Avg Bid)
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    29 bids
    Facebook CDL rest stop 6 days left
    VERIFIED

    I have a database of the GPS locations of rest areas along interstate highways. I want to target the people within a mile or two of these. Specifically over the road truckers with newsfeed advertising. They do not have street addresses. I see there is a way to enter in the GPS addresses using the Meta Business API. I have ZERO idea how to build that interface...I need someone who can do that for me?

    $65 - $66 / hr
    Sealed NDA
    $65 - $66 / hr
    8 bids

    we need a android developer experienced minimum 3 yrs of his professional.

    $470 (Avg Bid)
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    25 bids
    Computer Vision Specialist 6 days left
    VERIFIED

    We are looking for a computer vision specialist to work on a software development project for our company. The specialist must have an advanced knowledge of computer vision techniques as well as experience programming in Python. We expect the specialist to be able to identify, analyze, and apply computer vision techniques to correctly identify and process information. Our ideal candidate will have a solid grasp on developing innovative applications, with a track record of success in similar projects. Responsibilities: Develop computer vision algorithms to extract color areas from 2D templates Implement code to extract color areas using Python or other programming languages Work with the team to test and optimize the code for accuracy and performance Requirements: Strong knowledge of c...

    $2210 (Avg Bid)
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    43 bids

    Basically, frontend is in nextjs and backend is in java(spring-boot). we need to add one feature to frontend side and integrate that with backend. backend is ready. need a person who will add that function and integrate with backend

    $15 (Avg Bid)
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    4 bids

    I am looking for a freelancer who can help me build a cloud PBX telephony software that is supported by Twilio or Asterisk, using the SIP protocol. This telephony software will not need to be integrated with an existing management platform.

    $44 / hr (Avg Bid)
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    12 bids
    JAVA Engineer 6 days left
    VERIFIED

    I am a skilled Java engineer who has experience developing complex web applications using the Spring Framework."

    $24 / hr (Avg Bid)
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    32 bids

    I want some to help to solve a problem useing NLP.

    $201 (Avg Bid)
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    56 bids

    We need an Android developer who has knowledge to develop school base Attendence system for Staff, Management and Student and send sms to Parents mobile no for absent student, School notification, Home Work class Content uploading from school Dashboard and show in parents Dashboard, also have a facility to chat with teacher,student and parnets.

    $559 (Avg Bid)
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    32 bids

    I have various Flutter development tasks. Please read the docx attached along with the screenshots. Long term partnership for right developer. ************ ONLY APPLY IF YOU HAVE ACES TO TIKTOK ************ READ ATTACHMENTS CAREFULLY BEFORE POSTING PROPOSAL ************ FIXED BUDGET, NON-NEGOTIABLE

    $88 (Avg Bid)
    $88 Avg Bid
    10 bids

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