Proof concept java servicesPekerjaan

My old Android slot machine app is proving incompatible with the latest ve...version of Android Studio. Despite having imported the necessary Android package in the project, I'm unable to build the app. I keep encountering an error message stating "java: package does not exist". Here's what I need: - Identify the source of the build failure - Fix the "java: package does not exist", making sure the app builds successfully - Verification that the app is working perfectly in the current Android Studio version The ideal freelancer for this job would have extensive experience with Android Studio, and debugging skills for identifying and solving build problems. Knowledge with Java and past experience in fixing similar errors will be an a...

My Gmail ActionMailer has stopped working and I'm encountering an authentication error. This problem started after I changed my email password, and now I'm unable to send emails from my application. Key tasks would include: - Investigating the causes of the authentication err...authentication error - Resolving the issue, ensuring the ActionMailer can successfully connect to my Gmail account - Testing the solution to confirm that emails can be sent from the application Ideal candidates for this project should have: - Proficient knowledge of Ruby on Rails ActionMailer - Experience troubleshooting and resolving authentication issues - Ability to work with third-party services like Gmail - Strong communication skills, providing clear updates on the progress and any changes...

We are seeking a talented and experienced Java/Kotlin Developer to join our development team. The ideal candidate should be proficient in software development principles and practices. In this role, you will work on a variety of projects, from developing new features to maintaining and enhancing existing applications and creating Unit Tests. Key Requirements: - The application must be compatible with Android and iOS - I'm aiming for a high level of testing coverage, specifically continuous integration tests that run with every code update. Please bid with relevant examples of your work and an outline of how you would approach the testing of a Kotlin-based Android app.

I'm seeking a seasoned Instagram manager who is adept at increasing followers and engagement while drawing attention to my interior design services. I'd like you to: - Focus on growing my follower base dramatically. - Stimulate and interact with my audience, resulting in higher engagement. - Convert this increased visibility and engagement into actual business. Ideal candidates should have: - Extensive experience in managing social media, particularly Instagram, for businesses. - A track record of building followers and promoting engagement. - Knowledge of the interior design industry or a willingness to research and learn. - Skills in presenting services attractively to professionals and parents. - Expertise in turning social media engagement into real-world bus...

Analista Programador Senior Certificado en Genexus con experiencia comprobable mínima de 3 años Manejo de Genexus versiones Evo2 y 17 Manejo de complemento Work with plus Programación de aplicaciones JAVA y C# Desarrollo Web Services Bases de Datos relacionales

I'm in need of a skilled Python/Java developer who can help me build a full-stack accounting web application. Key aspects of this project include: - **Main Feature:** The most crucial aspect of this accounting web application is its financial reporting capabilities. The financial data will be taken from Excel and XML. There will be financial reports (P&L, Balance Sheet, Cash Flow) and graphs to show the financial status. - **Technology Stack:** I require the project to be developed using Python/Java as the primary programming language. - **Database:** The application should be built using MongoDB for its databases. Ideal candidates should have: - Proficiency in Python/Java and MongoDB. - Experience in developing accounting or financial applications that i...

I require a compilation of 1,000 genuine, individual leads for users of Ethereum wallets located primarily in North America. These leads will strategically aid in increasing our sales offering crypto-related services or products. Due to the specific request, freelancers bidding on this project should possess: Key Requirements: - Superior lead generation capabilities - Solid understanding of the crypto and digital wallet market, specifically Ethereum - Demonstrated experience in targeting and acquiring leads within North America Target Audience: - Ethereum Wallet Users - Geographical Focus: North America Each lead should come with associated phone numbers for cold calling purposes. Previous experience in crypto lead generation in North America will be highly beneficial. Your ski...

I'm seeking an experienced draft...for wave energy converters. Ideal candidate should be skilled and competent in creating and understanding energy device designs. - Task: Produce a hand-drawn sketch of basic layouts for wave energy converters. - Skillset: Proficiency in technical drawing, with experience in energy device or similar field. - Expectations: The sketches should be clear and concise to effortlessly explain the concept and layout of the designs. Your creativity and input will be appreciated throughout this project. What's provided: I will provide the functions and details necessary for creating the basic layout. You should be detail-oriented, able to follow instructions and work in a timely manner. Experience in renewable energy field is a plus. Looking f...

...our clients. Your role will involve engaging with clients in real-time, addressing their queries, and ensuring excellent customer service. Responsibilities: - Provide live chat support to clients promptly and professionally. - Engage with clients to understand their needs and offer solutions. - Assist clients with navigating our platform and providing guidance. - Upsell or cross-sell additional services based on client requirements. - Escalate complex issues to the appropriate team. - Maintain accurate records of client interactions. Requirements: - Prior experience in customer service or live chat support preferred. - Excellent communication skills and ability to provide clear information. - Strong problem-solving skills and ability to think on your feet. - Empathy and patienc...

I'm looking for a professional web designer who can help me create an interactive and user-friendly website that accurately showcases my moving company’s services. Our offerings include local moving, long-distance moving, and packing and unpacking services. Our clientele is diverse, including both residential homeowners and corporate offices. The website should therefore be designed to cater to these varying needs. Ideal Skills: - Experience in web design and development - Familiarity with SEO optimization to generate leads - Ability to create a responsive and easy-to-navigate design - Superior understanding of the target audience and how to appeal to them also need WhatsApp integration on the site + landing page This website should be more than just a vi...

Hi Ahmed! Same concept as before with the lockboxes and car wrap - car wrap getting done this week by the way. I'm running out of for sale signs so need a fresh order and I like your new branding concept. Here are the dimensions: 30" x 24" 3ml Alumibond Sign and link to the site for template: Let me know if the budget works for you. Cheers, Alex

necesito formacion para modelar JIRA en mi empresa

I'm looking for a unique and vibrant business card design. The card should have an excellent color scheme and typography. The propose is to understand my logo concept and convert it to the business card with standards quality and correct print layout setting. Key Points: - Color Scheme: I'm open to colorful combinations like red, orange, yellow, green, blue, purple, and white. However, I'm also open to minimalistic options. - Typography: I need a design with excellent typography. The text should be clear and easy to read. - The business card needs to embody the qualities of brand recognition, professionalism, and be appealing enough to attract customers. - It should be visually striking, yet simple and memorable. Ideal Skills: - Graphic Design: A freelancer with...

In this project, I require a developer to expand my current user registration system in Java. Specifically: - Add a new screen that allows for user registration data manipulation. It should allow for adding and editing users within the system. - The new screen should also display the department and role of each user. Both roles and departments are already defined in the system's backend. - This new screen should only be accessible to admin users. They should have the capability to not only view but also edit the department and role details. Ideal Skills and Experience: A candidate with solid experience in Java, database management, and user interface design will be best suited for this task. Familiarity with system permission allocation and principles of good design ...

I'm urgently seeking a professional to assess the mental health services in a hospital, specifically focusing on ligature points. Key Responsibilities: - Conduct a thorough assessment of the mental health services in the hospital. - Pay special attention to ligature points and identify areas of improvement. - Provide a comprehensive report with recommendations. Ideal Skills and Experience: - Prior experience in assessing mental health facilities. - Knowledge of ligature points and suicide prevention measures. - Ability to work under tight deadlines and produce high-quality, actionable reports. Please only apply if you are available to start immediately and can deliver a high-quality assessment within a short time frame.

I'm looking for somebody to rebuild a Shopify website with a new concept based on my requirements. Example, of what I'm looking for in terms of UX and functionality ONLY apply if you're capable of doing this.

...understand their training needs, and recommend tailored solutions to meet their objectives. Key Responsibilities: Prospect and generate leads through various channels, including networking events, online platforms, and referrals. Conduct consultations with potential clients to understand their training requirements and objectives. Present our range of CCNA, CCNP, and CCIE training programs and services in a compelling and persuasive manner. Prepare and deliver customized proposals and quotations to prospective clients. Negotiate terms and close sales agreements to achieve monthly and quarterly sales targets. Build and maintain strong relationships with clients to foster long-term partnerships and repeat business. Qualifications: Proven track record in sales, with a minimu...

I'm looking for a skilled web designer and developer to create a professional website for my Homecare company. Our primary goal is to provide information about our services and company. Target Audience: - The website should cater predominantly to elderly individuals, who are seeking quality homecare services. Key Features Required: - Accessible Design: It's crucial that the website is designed with the needs of elderly users in mind, ensuring that it's easy to navigate and understand. - Detailed Service Descriptions: The website should provide comprehensive information about our services, helping visitors understand the full range of care options we offer. - Contact Form: An interactive contact form should be included to allow potential clients and pa...

אני מחפש מפתח אפליקציות אנדרואיד מיומן ליצירת פלטפורמת חנות אפליקציות אנדרואיד בקנה מידה קטן. המטרה העיקרית של פלטפורמה זו היא לספק למשתמשים גישה למבחר של כ-10 יישומים להורדה. יש לפתח את האפליקציה בשפת JAVA בלבד. יש לספק לי את קוד המקור לשימוש אישי ולשינויים עתידיים. תכונות עיקריות: 1. מערכת רישום ואימות: • המשתמשים יידרשו להירשם באמצעות שמם המלא וכתובת האימייל שלהם בלבד. • האימות יתבסס על סיסמה חד פעמית (OTP) שנשלחה לכתובת הדוא"ל שסופקה על ידי המשתמש. • יושמו מנגנוני אימות חזקים כדי להגן מפני ניסיונות מעקפים והזרקות זדוניות. 2. מנוי שנתי: • תהליך ההרשמה יכלול תשלום באמצעות כרטיס VISA עבור מנוי שנתי. • תוקף המנוי יהיה לשנה ממועד הרכישה. 3. פונקציונליות נוספת: • למשתמשים עם מנוי פעיל תהיה אפשרות להוריד אפליקציות מהחנות לאחר אימות ...

...specialize in analyzing contingent labor and excessive labor costs, primarily for hospitals and clinics. Required Skills & Experience: - Strong background in data analysis - Proficiency in healthcare-specific data insights, particularly pertaining to labor costs - Experience working with hospitals or clinics - Expertise in contingent labor cost analysis Services and Delivery: While I am not currently specific in how advisory services will be delivered, the ability to provide flexible consultation models (e.g., both on-site and remote) is highly desirable. Job Scope: - Establishing the foundation of the company - Providing necessary tools and algorithms for labor cost data analysis. This project requires a deep understanding of healthcare data and the ability ...

I'm seeking an experienced architect and interior designer to assist in the creation of my new build home concept design. Key Requirements: - Experience in residential architecture and interior design, particularly modern styles. - Ability to seamlessly blend architectural and interior design elements for new build projects. - Strong understanding of current design trends. - Excellent communication skills, able to understand and interpret client requirements. The project will involve: - Designing the layout and structure of a modern residential building. - Creating detailed interior design plans, including room layouts and material selections. I'm open to hearing your suggestions and ideas, as long as they align with the modern, residential vision I have in mind. Ple...

I'm in need of...seeking someone who can create a new EC2 instance identical to the current one. Here are some detail regarding the project: - Task involves creating a new EC2 instance from scratch, identical to my current one. - You will not need to make any connections to any other AWS services since I did not answer this requirement previously. - Your role involves providing a solution to my SSH key file loss, which might call for EC2 instance recreation. The ideal candidate should have considerable experience working with Amazon Web Services, specifically in the field of EC2 instances creation and management. Having dealt with SSH key file issues will be a major plus. Please state your experience and approach to the task at hand in your bid. Looking forward to a f...

I'm seeking a skilled and experienced salesperson who can bring in clients specifically from the Information Technology sector for our software and website development services. Key Tasks: - Make cold calls to potential clients in the IT sector to introduce our services - Execute email marketing campaigns targeted towards this sector - Attend relevant networking events to promote our offerings The main objective behind acquiring new clients is to boost revenue. The ideal candidate should have: - Proven experience in B2B sales, specifically in the IT industry - A strong sales track record with verifiable results - Excellent cold calling and email marketing skills - Experience in networking and building relationships - Understanding of software and website developm...

I'm looking for a talented graphic designer to create a new logo for my agency, Indie Pixl. The logo should embody the key message of our agency - creativity and innovation. It should be subtle and sophisticated in terms of color scheme. Who we are: -We are an Agency 'Indie Pixl' who provide services in Animation & VFX. Key Requirements: - Design a logo for "Indie Pixl" agency - Convey creativity and innovation in the design - Utilize a subtle and sophisticated color scheme Ideal Skills & Experience: - Strong portfolio of logo designs - Previous experience with branding and corporate identity projects is a plus - Ability to understand and translate abstract concepts into visually appealing designs - Proficient with graphic design tools such as Ado...

I'm looking for a professional B2B website copywriter who can help me showcase our products and services in an engaging, conversational tone. This is a project for someone who understands the ins and outs of B2B marketing and can tailor their writing to appeal directly to other businesses. The idea is to hone in on problem statements that resonate with our ICP. Your work should be clear, compelling, and compelling - we're not looking for overly formal or technical language, but rather a conversational and engaging tone that can help us stand out in a crowded marketplace. Key requirements: - Experience in B2B copywriting - Ability to showcase products and services effectively - Strong understanding of conversational and engaging tone - Proven track record of de...

I need a Wordpress website with a custom T-shirt designer page and a stylish shop store. - T-Shirt Designer Page: - The primary function of this page is to enable my customers to create personalized designs. - I want it to be user-friendly and intuitive. - Stylish Shop Store: - I need a product catalog with filters, making it...Integrations: - The website will need to integrate with a payment gateway. - Additionally, it should integrate with a shipping service to handle order fulfillment efficiently. Ideal Skills: - Proficiency in Wordpress website design and development. - Experience in creating custom e-commerce websites with product customization options. - Knowledge of integrating payment gateways and shipping services. - A good eye for design and user e...

Are you a skilled programmer with a passion for innovative solutions? We're seeking a talented individual to join our team on a freelance basis to develop cutting-edge software for electronic component counting. Project Overview: We aim to create a software solution capable of accurately counting electronic components based on weight measurements. The concept involves establishing a database of various components, each with its corresponding full and empty package weights. The counting process will occur on a scale, where after placing the component on the scale, the software will deduct the empty package weight from the total weight to determine the number of components remaining in the package. Key Requirements: Proficiency in software development, particularly in the real...

I'm on the lookout for a specialist who brings proficiency in both ASHLAR and MIST to the table. Your main objective will be: - Create a small demo App using VB.NET to illustrate implementation of...explanation are available on various sites : Purpose is to understand and learn these two techniques, in VB.NET. It is quite possible that we may find an expert of ASHLAR, but they may not know VB.Net. ASHLAR and MIST are both in JAVA... I will accept if some one can make a simple demo app in JAVA also, My aim is simple to understand this technique and also to see this in practical demonstration using sample Images. Not too strict about text in Project Details.

I have 2 websites. One in shopify and one in wordpress. Both get same error when i try to setup GMC. See printscreen for the exact error. Send me message on what steps you will take to fix my problem. Dont ask me to make new gmc its useless. i have tried already 5 times. Something on the website is missing and Google doesnt approve my GMC. Show me proof of activated GMCs. No time wasters!

I need a professional to create a PowerPoint presentation for my company. This presentation should accomplish two key objectives: 1. Detail the history and key milestones of our company to give context and background. 2. Provide an overview of our products and services to showcase what we offer. I envision the presentation to have about 10 slides to keep it concise and engaging. Ideal skills and experience for the job: • Proven experience creating corporate PowerPoint presentations • Excellent visual design skills • Ability to distill complex information into clear, concise slides • Knowledge of best practices for PowerPoint presentations. The presentation needs to be developed in English language and fit with the information on our homepage: The draft pres...

...With a focus on delivering high-quality IT services and products, we strive to empower organizations to streamline their operations and enhance repetitive tasks in automation. Job Description: We are seeking a motivated and results-driven Sales Executive to join our team. The ideal candidate will be passionate about technology and possess excellent communication and negotiation skills. As a Sales Executive, you will play a key role in driving sales growth by identifying and pursuing new business opportunities. Responsibilities: Identify and prospect potential clients in needs of DevOps or DevSecOps space. Build and maintain strong relationships with key decision-makers. Understand clients' needs and recommend appropriate IT solutions and services. Prepare and deliver...

I'm in need of a proficient React Native Developer, specifically for an iOS and Android app. WITH ATLEAST 5+ YEARS OF WORKING WITH REACT NATIVE Key Features: - User login/authentication - Push notifications -...SQLlite for local DB Design Requirements: - Minimalistic, yet bold and vibrant design - Custom illustrations to enhance user experience Preferred Third-Party Integrations: - Google Maps - Social media platforms - Payment gateways Ideal candidates should have: - Proficiency in React Native - A strong understanding of user interface and design principles - Experience in integrating third-party services - Excellent communication skills and a proactive approach. If you possess these skills and are confident in delivering a high-quality, feature-rich app, I'd lo...

I'm in need of a skilled Java developer to create a desktop application with a modern and sleek user interface for the Windows operating system. The application will be to develop and maintain trading applications. - User authentication: The app should have a secure and user-friendly authentication system that allows users to log in and access the application's features. - File management: The app should provide users with the ability to manage files and folders in an intuitive and efficient manner. - Data visualization: The application should also include interactive and visually appealing data visualization features that enable users to analyze and interpret data effectively. The developer should have strong experience in Java programming and desktop applicati...

I'm in need of a proficient JAVA Jasper developer to design multi-chart - bar, line, and pie charts specifically. You will be using data from a MySQL database. Ideal skills and experience: - Advanced knowledge in JAVA Jasper - Experience in chart design - Proficiency in manipulating and extracting data from MySQL Databases Key responsibilities include: - Designing and implementing interactive and visually appealing multi-charts in JAVA Jasper - Building robust connections to MySQL database - Ensuring the seamless extraction of data from the MySQL database to be used in the charts. Your expertise will be crucial to conveying complex data in a clear, concise manner. It's critical that you're able to design in JAVA Jasper, use MySQL databases, a...

Key Details: - Objective: The main aim of this Instagram account is to promote my business/service. - Target Audience: I'm primarily focusing on professionals aged 21-35, so the content should be engaging and relevant to this demographic. - Content: The content shared on the account should be strictly business-related, showcasing the services offered, business updates, and other related information.

...specific keywords that are relevant to the services I offer. Key points to consider: - SEO Strategy: I'm looking for a professional who can implement a strategic SEO plan that will boost the websites' visibility on Google. - Keyword Optimization: The focus will be on improving search rankings for specific keywords that are related to the services I offer. - Collaborative Work: It's crucial that the freelancer can work in sync with the existing company, ensuring that the current SEO efforts are not disrupted. The ideal candidate: - Should have a proven track record in SEO optimization, particularly on Google. - Must be skilled in keyword research and optimization. - Should be able to work collaboratively with other SEO professionals. - Experience in the ...

I'm in need of an elegant and luxurious brochure / executive summary design for multiple client specific projects. The target audience for these projects are primarily business professionals. The brochure will serve as an executive summary, encapsulating and conveying the essence of our product, brand and services. I will provide the content, including text and images, for you to creatively integrate into the design. Key requirements include: - An elegant and luxurious design style that resonates with the target audience of business professionals. - A strong understanding of marketing and promotion through visual design. - Proven experience in creating visually appealing and impactful brochures. Your task will be to combine the provided content with your design expertise to...

Following are the requirements of task to be fulfilled. 1- Task is to visit the Galatasaray university phy...university physically and Take 5 to 6 geotagged photos of with name board captured and from outside the building. 2- Get the verification form filled, signed and stamped by the HR of Galatasaray university, and also stamp the certificate. 3- Get the details of verifier, Name, Designation, Department and Contact. 4- In case of refusal to fill form, take the written refusal with stamp or sign as a proof. 5- If Galatasaray university, does not found on given address than take the 7 to 8 geotagged photos of exact address with right left name boards photos and make a small few seconds video of address . Also get the details of any nearby business ( Name of person, Business name a...

Hello, I want a website kind of single product selling, usually in the latest tech stack; the front end can be in angular, react, etc., and the back end can be in Java/Kotlin-based micro-services, with relational db support. Initially, we can launch a website on a cloud basis infra. Later, we can move it to locally. First, I want to have a demo short of; if you understand the requirements, you can suggest ideas, design, and update requirements accordingly, having a product mindset and Indian market. I am a backend tech person, so I understand all this easily and very broadly, but I want to invest my time in product ideas and business, not website creation, myself. We will start with basic things as below: Showcasing what product we have, its benefits, cost, how beneficia...

I need a logo for my company that specializes in providing exceptional services. The logo should be modern and minimalist in style. The ideal freelancer for this job should: - Have a strong portfolio of modern and minimalist design work - Understand the importance of reflecting the values of a service-oriented company in the design - Be able to deliver a simple yet striking logo that can be easily recognized and remembered - Have excellent communication skills to understand the vision and mission of the business and translate it into a visual representation

I am seeking a team of enthusiastic freshers to step into the role of Voice Executives for my new project. You will be dominantly engaging in: - Outbound Sales Calls: Persuasive communication, patience, and resilience are vital because these calls will require you pitching products/services, handling rejections, and encouraging positive relationships. - Appointment Scheduling: A mastery of multitasking, organization, and time management will be expected to proficiently manage clients' appointments. The project revolves around the Healthcare sector, so any previous experience or familiarity in this field could prove beneficial. Excellent communication skills, both oral and written, coupled with customer service skills are expected from all ideal candidates.

...code for a simple virtual camera. The basic code is already all here from Microsoft For this proof of concept with no GUI I would like you to make the code to make the virtual camera to handle 3 states for the virtual camera which users switch between like this, by pressing : Ctrl+1 - takes system video camera video feed as input Ctrl+2 - as above but also with watermark image in top right corner. Ctrl+3 - no camera vision, full screen image This is a proof of concept. If it is successful a larger project based on this test will follow. Thanks....

We are currently extending our Java Spring application and are searching for support within the area of Spring Authorization Server and Security. We want to use Spring Authorization server within our multi-tenancy approach. We need to provide different logon mechanisms starting from OAUTH2 (Azure, Google, ..), over Social Logins, API Tokens and regular JWT Tokens. We are searching for somebody who can support our development team in this area.

I am setting up a Shopify store for graphic tees and I need a freelancer who can help me make it a success. - Target Audience: The store is meant to cater to both men and women, so the design and layout should appeal to a broad range of tastes. - T-shirt Style: I'm planning to sell graphic tees, so experience in designing and selli...knowledge of integrating this kind of service into a Shopify store is necessary. Ideal Skills and Experience: - Proficiency in Shopify: The ideal freelancer should be comfortable and experienced in setting up and customizing Shopify stores. - Graphic Design: Experience in graphic design for t-shirts will be highly beneficial. - Print-on-Demand Integration: Prior experience with print-on-demand services and their integration with Shopify will be a...

More details: What is the primary goal of your website? Sell products or services Who is your target audience? USA and Canada. What products or services do you want to sell on your website? Physical products This is my URL

As a travel agent, I aim to provide comprehensive tour package services across a variety of offerings. These will encapsulate Adventure tours, City tours as well as Nature tours. My primary focus will be on destinations that include Mountains, Beaches, and Historical cities. Ideal Skills and Experience: - Proficiency in creating bespoke tour packages - In-depth knowledge of Adventure, City, and Nature tours - Familiarity with Mountain, Beach, and Historical city destinations.

I'm a passionate logo designer seeking an experienced marketing and branding expert to enhance my visibility and attract more clients on Freelancer.com. Here's what I...compelling project proposals to stand out among competitors. The ideal candidate will have: - A strong track record in marketing, specifically within the Freelancer.com platform. - Success in personal branding and lead generation for freelancers. - Excellent communication skills and the ability to provide actionable insights. - Knowledge of the latest trends in logo design and freelancing to keep my services competitive. Together, we will work towards building a strong online presence that reflects the quality of my work and attracts the right clientele, ensuring a steady stream of projects and growth in ...

Indian Expert JAVA Developer required for desktop application customization. Need senior only. not easy work.

I am in need of an expert who can set up a Windows Server Virtual Machine in Azure for me. The VM will need to be configured with 4 CPUs and 8GB of RAM. Skills and Experience Required: 1. Azure Expertise: You should have a deep understanding of Azure services and be able to navigate the Azure portal with ease. 2. Windows Server Administration: Proficiency in Windows Server operating system is crucial for this project. 3. Virtual Machine Configuration: Experience in setting up Virtual Machines, specifically with the requirements of 4 CPUs and 8GB RAM. 4. Networking: Proficiency in networking, particularly the ability to configure my Virtual Meraki to the Azure VM.

I am in need of a skilled software developer with superior expertise in Android mobile app development. The operating system I am interested in is Android and the software to be developed is a mobile application. However, the main function of the mobile app is yet to be defined, but this shall be communicated clearly once a freelancer is selected. Ideal Skills: - Android Development - Java - Kotlin - UX/UI Design Experience: - Proven experience in mobile app development - Portfolio of released applications on the App store or the Android market - Solid experience in mobile app development life cycle.