Spring mvc tutorial仕事

Looking for an expert full-stack developer to join our team? Here's what we're after: - Mastery in Front-end and Back-end Development: Your role requires proficiency on both the client and server side, so experience in both domains is a must. - Specialization in Web Development using ASP.NET Core 7+ MVC and Angular: We're seeking someone with deep expertise, though familiarity with other frameworks is a bonus. - Minimum 2 years of experience is required. - Proficiency in Arabic is preferred. If you're passionate about crafting high-quality, performance-driven applications and possess the skills we're seeking, we'd love to hear from you.

...problems with my Spring Boot and database backend, namely (but not exclusively), data inconsistency and significant performance issues. • Data Inconsistency: There's a rampant issue of missing and incorrect data circulating within the system. This issue impacts the integrity of the entire project and lowers its efficiency. I am seeking a professional who can help identify the source of the inconsistency and implement a permanent fix. • Performance Issues: I am dealing with certain performance issues, specifically very long database queries. Additionally, the task reassignment isn't functioning as it should, and data entry is also compromised. Ideally, I'm looking to enlist the services of a professional who possesses a strong background in database man...

...problems with my Spring Boot and database backend, namely (but not exclusively), data inconsistency and significant performance issues. • Data Inconsistency: There's a rampant issue of missing and incorrect data circulating within the system. This issue impacts the integrity of the entire project and lowers its efficiency. I am seeking a professional who can help identify the source of the inconsistency and implement a permanent fix. • Performance Issues: I am dealing with certain performance issues, specifically very long database queries. Additionally, the task reassignment isn't functioning as it should, and data entry is also compromised. Ideally, I'm looking to enlist the services of a professional who possesses a strong background in database man...

...FEATURES: - User registration and login: There needs to be a straightforward area for potential users to register and account and log in. - Course listing and search: The major purpose of the site revolves around an engaging, user-friendly course listing and search functionality. - Video lectures and tutorials: Video content is king these days, and my site definitely needs the ability to host and play tutorial videos. DESIGN REQUIREMENTS: I don't have a specific design in mind and need your professional input and creativity on this matter. Please help me come up with a design that is not only eye-catching but also user-friendly. IDEAL SKILLS: - Proven website development experience - Familiarity with educational websites or e-Learning platforms - Strong UX/UI skills - Des...

...serialization, deserialization, event streaming, and processing. Additionally, you will be responsible for developing Spring Boot microservices that encompass user authentication, authorization, database integration, data modeling, and REST API development. Key responsibilities include: - Kafka setup and configuration - Kafka message serialization and deserialization - Kafka event streaming and processing - Designing and implementing user authentication and authorization within Spring Boot - Integrating databases and modeling data effectively - Developing REST APIs with Spring Boot The ideal candidate for this project should have extensive experience with Kafka and Spring Boot as well as a strong background in full-stack development. Proficiency in Java is...

...inline-stylings. I want to move towards a more organized, maintainable and modular structure, following MVC principles. - **Migration to Angular/Node.JS:** You must have a demonstrated experience in working with Angular for the frontend and Node.JS for the backend. The functionality of UI views is clear, and the queries on the DB are available, so the primary focus will be on refactoring and migrating the codebase. Ideal skills for the job: - Experience with LAMP for understanding the existing code - and extensive experience with Angular / Node.JS - Proven experience in refactoring and migrating web applications using the given tech stack - Strong understanding of object-oriented and MVC coding styles - Proficient in Angular for frontend development and Node.JS for bac...

Hi Gulshair A., I noticed your profile and would like to offer you my project. We can discuss any details over chat. Need help to fix spring boot and database related issue.

Hi Santharam G., I noticed your profile and would like to offer you my project. We can discuss any details over chat. I want to fix 2 issues of project tech is Spring Boot and database

I'm seeking a talented designer to create an infographic that visually represents our development process. Key Points: - The infographic should cover the stages of our development process, which include: - Estimate and quote Tool and Process - Design and feedback loop - Development and coding using Sprints, code, demo, prioritize, plan next spring. - Testing, feedback, fix, retest. - Project Documentation - SOW, weekly status, project portal, validate completed SOW - Deployment and code documentation - manual or automated devOps, swimm for documentation. - The design should be engaging and easy to follow. It is important that the infographic is both visually appealing and informative, helping to communicate our process to internal teams and potential clients. I...

I’m in search of a skilled freelancer who can transform my vision into reality. The project involves two main parts: LOGO DESIGN - I have a distinct vision for the logo and will provide the necessary ideas and elements. Though the outline is clear, it still requires your professional touch to spring to life. ARCHITECTURAL PHOTOGRAPHY - Beautiful pictures that capture stunning architectural or location-based photos for the project. - The style should be bright and vibrant to match my preferred theme. SKILLS & EXPERIENCE - Proven experience in photography with a striking portfolio. - Exceptional skills in graphic design, especially in logo creation. - Strong eye for aesthetics and detail. - Ability to understand and implement directions. - Open and effective communication...

I'm looking for a professional who can help me deploy my Spring Boot Maven with MySQL and React app to Google Cloud Platform. Key Responsibilities: - Deploy Spring Boot Maven with MySQL and React app to Google Cloud Platform - Ensure the deployment is running smoothly and is accessible Ideal Skills and Experience: - Strong experience in deploying Spring Boot applications - Familiarity with React app deployments - Prior experience with Google Cloud Platform - Knowledge of CI/CD pipelines is a plus, although not required in this case - Proficiency with Git for version control Looking forward to your bids!

I have a project to be completed. This is a project on ASP.Net website using MVC, razor etc . It is a code base generated website using visual studio code. C# , css, js, bootstrap etc

...professionals aged 20-45 (females) to my site. The primary focus of this project is to increase my website traffic through Instagram. Your role will be to create compelling posts that will resonate with professionals aged 20-45, piquing their interest and motivating them to visit my website. Key responsibilities would include: - Crafting and scheduling posts that would include product photos and tutorial videos - Engaging with our audience on Instagram - Using Instagram features like stories, reels, and IGTV effectively - Providing regular reports on the performance of the posts I am looking for a professional who has: - A proven track record of successful Instagram marketing campaigns - Thorough understanding of Instagram's algorithms and features - Experience in crea...

I'm looking for an experienced tutorial creator to help me with making a video tutorial. Specifically, I need a step-by-step guide that's aimed at beginners with no prior knowledge. Key Requirements: - Video Tutorial: This tutorial will be in video format. - Guiding Through a Process: The main goal of this video is to guide viewers through a particular process or task. - Beginner-Friendly: It is essential for the content to be easily understandable for people with no prior knowledge on the topic. Ideal Skillset: - Proficient in creating video tutorials - Experience in guiding through a process or task - Understanding of how to apply beginner-friendly teaching methods Feel free to share any relevant experience you have in this area. Thank you.

We have our own ERP for accounting and inventory control, develioped using Spring Boot and Angular. I am in need of an experienced developer who can assist in integrating various PDF formats of invoices through the use of Optical Character Recognition (OCR) technology. The primary objective of this task is to streamline and automate the processing of invoices. Initially we can focus only on Sales Modules in which we have 2-3 formats of invoice and which need to be imported automatically in the entry module. Key Project Details: - The PDF invoices I frequently deal with come in both scanned image and digital (text-based) formats. - The extracted data from these invoices must be: - Directly integrated into Sales and Purchase Invoice Module for further processing - Exported to...

I am in need of a developer well-versed in web development to guide me through deploying my GitHub project on Netlify. The project can be found here: These tech were used to make the software ⚛️ React JS - Frontend ? Apollo GraphQL Server v3 - Server API ? GraphQL Template By Mohit - Boilerplate for Apollo ? Prisma - ORM ? Any relational or non-relational database that Prisma supports ?️ Redux w/ Redux Toolkit - State management ? IP Registry - Free Geolocation lookups

Hello, One of our clients has a requirement for on-site video maker and editor. They have got all the equipment (a very high-res Canon Camera and other accessories) and want to start a Kid's YouTube Channel and looking for someone to make and edit videos. Ideally, they need someone to be located in Islamabad/Rawalpindi area in Pakistan for ease of collaboration and working. So if you are not available in that area, bother not to apply. If you are, we will connect you with the client.

I'm looking for a skilled video producer and editor to create tutorial videos which are mainly 1-3 minutes in duration but could occasionally stretch to 5 minutes. This role involves: - Producing high-quality, clear screen recordings - Editing videos for clarity and seamless viewing - Integrating a working microphone for sound capture These video's will not be hard to make (I have some example videos in the end of the description). Just basic editing, basic recording. You have to use your own voice, webcam if possible, but not needed. This is how it will work: 1. Topic I will provide you with a video topic / title. This topic will be a 'How To' topic. For example, I will give you this title: How to change background in windows. 2. Research You will do res...

As a passionate educator, I am seeking an innovative and skilled video creator able to generate a series of explainer, product demo, and tutorial videos for my students. This project involves the use of mixed media, combining both live action and animation to create an immersive, enlightening experience. Key Responsibilities: - Create engaging explainer videos that detail complex concepts and processes - Develop product demo videos highlighting the uses and applications of various items - Generate tutorial videos explaining step-by-step procedures or instructions Ideal Skills and Experience: - Strong capability in creating mixed media content: combining live action footage with animated graphics - Experience in creating content tailored for students and geared towards ed...

I'm looking for a developer proficient with ASP.NET MVC and knowledgeable in Entity Framework. Looking specifically for someone who can deliver this fairly simple task very quickly and good communication I need a very quick turnaround on this project. My code is for a very simple view that displays records from database with filtering, sorting etc. I need a programmer to optimize my code (Looks the same, functions the same but code performs better and more streamlined. I will provide the model I use, the controller and the view files. The Controller action I need optimized and streamlined is the Index Action

Having 7 projects of spring tutoring based on it.

I'm seeking an experienced ASP.NET MVC developer with proficiency in JavaScript to assist with a persistent bug in my application. - The bug is related to the Task Grid, specifically in the Payroll Task Tab, where we are not seeing any data load without OData filters from the API. We currently have two tabs on the page: Active Task Tab and All Task Tab, and we've recently added a third tab called Payroll Task Tab. The issue is that this third tab only loads data when the API has ODataFilters as input parameters. However, the API now returns a plain list of Enumerable Items with pagination of 100 items and subsequent 100 items. We need to fix the .cshtml file to display these items in the task grid with this new API change. Currently, the API is not called when we click on...

I'm looking for an experienced Spring Boot developer to help me with some code refactoring and debugging. Check this: 1. Compile the code and fix bugs. 2. Modify the project. a. Create individual componemts. a. server b. client c. Frontend etc. and refactor. Simplify the code. 3. Test and release. - Compile the code and perform minor tweaks and optimizations to address any bugs that may arise. - After the initial debugging, the focus will shift to modifying the project. It involves breaking down the existing code into individual components such as server, client, frontend, etc. - In this modification phase, the main goal is to enhance the functionality of the project while simplifying the code structure. The final phase will encompass thorough testing

Job Title: Senior Full Stack .NET Developer Monday to Friday 2-3 hours/day IST Night (7am to 11am IST) Salary: 25,000 INR per mon...IST) Salary: 25,000 INR per month Job Description: We are seeking a highly skilled and experienced Senior .NET Developer to join our team. The ideal candidate should have strong proficiency in C#, ASP.NET MVC, and the .NET Framework, along with expertise in various web-related technologies such as HTML, CSS3, JavaScript, and jQuery. Additionally, familiarity with database technologies including SQL Server and T-SQL is essential for this role. One needs to be available in the mentioned timings and willing to work by screen share and remote control via Zoom. Skills Required: C# ASP.NET MVC .NET Framework Entity Framework HTML CSS3 JavaScript T...

I need a professional to compile and configure the app with Android Studio and give me the apk ready to publish it on Google Play. I deliver the source code of the application with the latest Flutter SDK update and work with WordPress backend. It will also have a structure tutorial and configuration manual. It is not complicated or time consuming for a professional with basic knowledge of Android, Java, Fultter The application is working with the backend via the REST API. The backend returns JSON data and displays it on the app. The package is full source code and complete solution. It includes the source code for mobile and backend. Later we can hire another job for iOS. Thans for your attention

Je recherche un professionnel qualifié capable de créer un tutorial attrayant en arabe marocain. J'ai développé une nouvelle application Web et j'ai besoin d'un didacticiel pour guider les utilisateurs sur la façon de naviguer et d'utiliser efficacement ses fonctionnalités. Exigences clés : - Professionnel en arabe marocain : Le tutoriel doit être en arabe marocain, la maîtrise de la langue est donc cruciale. - Compétences en production vidéo : vous devez avoir de l'expérience dans la création de didacticiels vidéo de haute qualité, attrayants et faciles à suivre. - Compréhension de l'application Web : une solide compréhension des...

I'm looking for a skilled professional who can create an engaging video tutorial in Moroccan Arabic. I have developed a new web-based app and need a tutorial to guide users on how to navigate and utilize its features effectively. Key Requirements: - Proficient in Moroccan Arabic: The tutorial needs to be in Moroccan Arabic, so fluency in the language is crucial. - Video Production Skills: You should have experience creating high-quality video tutorials that are engaging and easy to follow. - Web App Understanding: A solid understanding of web-based applications is necessary to effectively demonstrate the app. The goal of this project is to help new users understand how to fully utilize the app, so that they can benefit from its features. A successful candidate ...

I'm seeking an experienced PHP developer, with skills in JavaScript and MySQL. I have a Production System that requires an immediate update to have additional product types listed for sale in it's custom PHP Cart System that uses a dynamic pricing table and Calendar module. I have tutorial videos on its functionality to help guide you. However, the two new product types are new to the system and will need to be created. Key Requirements: - Expertise in PHP, MySQL, JavaScript - Constructive problem-solving skills - Ability to adapt to unknown project scopes. Your role may involve building complex applications or simple website scripts. With the uncertain nature of the tasks, a flexible and proactive approach is ideal. It'll be a bonus if you've worked on divers...

Please refer to "Saving c...refer to "Saving changes" item in: Write javaScript code to send data to a specific URL (to be defined). Handle three different situations: adding, editing, and deleting events on the Bryntum calendar (). - Each time an event is added, edited, or deleted, relevant event details are sent to the designated URL. - This may include the event id (when then event is being edited or deleted), and others which will be dealt with later on this project or on a next project. Ideal Skills: - Experience with JavaScript - Check Bryntum Calendar live demo at This is a very simple project! Looking forward to your proposals.

I am searching for an expert in Spring Boot (v3) Java (for front it can be react or angular) who has the ability to create a property management system. The system should be comprehensive, including both tenant and property management facilities, as well as maintenance. Additionally, I require the integration of a hotel management system within the same platform, supporting room reservation, guest check-in/check-out, housekeeping, back office and room management, and a central reservation system. There are 3 hotels and 4 houses for rental which will be managed by this system. So, we need to manage all hotels together and separately. Ideal skills & Experience: - Spring Boot (3) Java proficiency - Angular or React - Great UI/UX - Experience in building property ma...

I'm looking for a dedicated professional to undertake basic editing tasks for a series of educational tutorial videos. You will be provided with raw footage that needs trimming and merging to create a seamless learning experience for viewers. Your tasks will include: - Trimming unnecessary parts - Merging clips to ensure logical sequence - Ensuring smooth transitions between frames - Delivering finalized products in a timely manner Ideal candidates should have: - Proven experience in video editing, particularly with educational material - Proficient in using various video editing software - Excellent attention to detail - Ability to meet deadlines successfully Please provide your previous work samples along with your bid. Looking forward to collaborating with a talented i...

I'm in need of a highly competent developer with skills predominantly in Java, Spring Boot, and MySQL to handle the creation of a project focused on user authentication and database integration functionalities. Key features required for this project include: - User authentication system: Create an efficient and secure user authentication process. The system should be able to verify the identities of users before granting them access. - Database integration: Develop a smooth and functional connection to the database, safeguarding the integrity and security of data at all times. Candidates with previous experience on similar tasks will be preferred. I have a design and wireframe ready, which can guide the selected freelancer in actualising this project. Just to clarify, this ...

I am looking for an expert in MVC C#, familiar with web application loading, . My specific need is to fix the bug of data only populating when the web page gets reloaded only There is a feature where clicking on a word in my application will display relevant information about that word within the same page, in a grid format. This is working fine. But it only works when the user reloads the page, Need you to fix this and make the page work when it first loaded. Your responsibilities include: - Implementing a word-click feature - Displaying the information within the page in a grid format - Working with an API to populate the grid Ideal skills: - Expertise in MVC C# - Experience with grid population in web applications - Familiarity with working APIs without extensive doc...

I'm in need of a detailed, comprehensive video tutorial on email phishing techniques. The primary aim of this tutorial is to serve as a research resource in the field of email phishing. The ideal candidate for this project should be well-versed in the following areas: - Email phishing: The freelancer should have a comprehensive understanding of various email phishing techniques that are prevalent in the cyber world. - Video tutorial creation: The tutorial should be engaging and easy to follow for users who may not be experts in the field. - Cybersecurity: A general understanding of cybersecurity principles would be beneficial to ensure accurate portrayal of email phishing threats and preventive measures. The video should encompass all aspects of email ph...

Draw air duct for intake and exhaust to a ks3m crypto machine. These will be 3D printed and must be drawn in fusion 360. The file should be sent to me and also a tutorial video in English how to draw this step by step. I have model of the mashine in stp file and picture.

Draw air duct for intake and exhaust to a ks3m crypto machine. These will be 3D printed and must be drawn in fusion 360. The file should be sent to me and also a tutorial video in English how to draw this step by step.

...be vibrant and eye-catching. Key Requirements: - Size: The sign should be designed in large format, specifically 18x24 inches. This is to ensure it's visible from a distance and stands out in a crowded event space. But is for our individual table. It is not a sign to advertise the cookie contest. - Theme: The theme of the contest is centered around anginettes, an Italian cookie, and utilizes spring colors. - Design Elements: The sign should include imagery of flowers and Noni's Flour Girls. No cookies. Maybe can incorporate a look of a mother daughter team. Ideal Freelancer: - Prior experience in graphic design, particularly in creating signage for events. - A good understanding of color theory, composition, and typography. - Creative and able to translate a specific...

...technician to perform a series of optimizations on an Origin gaming laptop (model: EVO15-S) and install several Large Language Models (LLMs), including Mistral v0.2 Dolphin, Varuna, and Falcon LLMs, to enhance its performance. The ideal candidate will have extensive experience with hardware and software optimization, LLM installation, and the ability to follow specific instructions provided via tutorial links or documentation. Responsibilities: • Disk Space Cleanup: Thoroughly clean up the disk space to ensure optimal performance. • Performance Optimization: Implement measures to significantly enhance the laptop’s speed and responsiveness. • LLM Installation: Install the following LLMs on the laptop, ensuring they run smoothly without any issues: ...

I'm looking for a part-time influencer to create engaging tutorial videos promoting our product on various social media platforms. Ideal Skillset: - Expertise in creating quality tutorial videos - Strong social media presence - Knowledgeable about our product for seamless promotion - Excellent communication skills

...Create Image supporting CXL implementation. - Image should tested with loadable module: ; ; ; cxl_port.ko. - QEMU: - If better support DAX. - I need the full-detailed tutorial on how to do it I am trying to to a developing the CXL support for Gem5. I finished the basic architecture and control/register design. Currently, I need a kernel booting reference from QEMU. The following is what I want: 1. target linux kernel version: 5.19-6.3. ARM64 2. target system image: Ubuntu. I need the image building tutorial. 3. the Kernel congiuration should support PCIE and CXL.(I can provide the .config file) 4. Compile the linux kernel's CXL-related modules, and put it in the image. Try to load/insmod the .ko mannuallly. 4.1. 4

As a beginner in MATLAB and Excel, I'm currently seeking an experienced programmer to guide me through the process of calculating RPM. The core objectives of this project are: -to clearly presented on the g-forces the riders will be exposed to for each of the 3 speeds, whether th... to produce a scatter plot representation of the imported data in MATLAB. This project primarily involves data from an experiment, so I'm aiming at gaining knowledge of not just importing data but also how to use MATLAB for data analysis. For you, prob need a bit of math skills, defin need to be good at sciences and Matlab, i am hoping someone that can explain to me in detail, step by step tutorial would be preferred. *NOT DOING MY ASSIGNMENT, BUT TEACH ME HOW TO DO IT *online meeting ...

I'm seeking a full-stack development team based in Pune for a new application project. The main focus of the project will be on the performance and scalability of the application. Key Requirements: - Backend Technology: Java 11 or 17, Spring Boot Microservices 3.0 or above - UI: Angular 15 or above, Bootstrap 5 The ideal team will have: - Extensive experience in Java and Spring Boot, Microservices 3.0 or above - Proficiency in Angular 15 or above and Bootstrap 5 - Past experience in developing applications with a strong focus on performance and scalability - Strong problem-solving skills and a proactive approach to addressing potential challenges If you're a full-stack development team with a strong background in the technologies mentioned and a focus on performa...

I'm in need of a technical expert in cleanroom design and maintenance. The project primarily focuses on performing essential calculations for a cleanroom design assignment. Your understanding and experience in this domain are critical. Key deliverables and requirements include: - Airflow Calculation: You'll be required to expertly calculate the airflow need...cleanroom setup. Ideal candidates should have: - Extensive experience with cleanroom design and maintenance. - Proven track record of successfully calculating cleanroom parameters like airflow and filtration efficiency. - Knowledge of industry standards and regulations related to cleanroom design. Please read the documents attached. "Task" Document is the work that needs to be done. "Project Tutorial...

Set up MailWizz and run several tests to verify that bulk sending emails is working properly. The personalization of emails consists in include information extracted from the Excel file (MailWizz ) and insert it into the text of the email (MailWizz Test ) Likewise, the freelancer will teach how it works to be able to carry out the next campaigns autonomously. To do th...several tests to verify that bulk sending emails is working properly. The personalization of emails consists in include information extracted from the Excel file (MailWizz ) and insert it into the text of the email (MailWizz Test ) Likewise, the freelancer will teach how it works to be able to carry out the next campaigns autonomously. To do this, the freelancer will make a video tutorial.

I am seeking a skilled network administrator to help me with a specific firewall configuration on my Asus Dr 68-R router. This configuration includes the following specific requirements: - Set up a firewall rule that blocks all incoming DNS requests except for tho...this is where the issue is originating. The ideal candidate for this job will have: - Profound experience in working with Asus routers, particularly the Dr 68-R model - Expertise in firewall configurations and rules, especially for DNS filtering - Prior experience in implementing content filtering on home routers - Excellent communication skills to explain the changes made and to provide a brief tutorial on content filtering for our kids. The ability to deliver a quick turnaround on this project is highly preferred. ...

I am in urgent need of an experienced backend developer who's proficient in Java, SpringBoot, and PostgreSQL. The project involves: - Design and develop REST-based web services utilizing Java microservices web frameworks (such as Spring Boot etc.) -Apply design principles and patterns in creating enterprise-level solutions, as needed -Perform web service tuning and performance testing -Engage in code review and feedback process -Take a feature from inception to completion independently across the stack -Collaborate with UX/UI team, Web Frontend Team and Mobile app team. -Participate in and support the entire SDLC processes Experience with similar projects and a quick turnaround time are highly preferred. Please only apply if you have the requisite skills and can meet the ur...

I am in urgent need of an experienced backend developer who's proficient in Java, SpringBoot, and PostgreSQL. The project involves: - Design and develop REST-based web services utilizing Java microservices web frameworks (such as Spring Boot etc.) -Apply design principles and patterns in creating enterprise-level solutions, as needed -Perform web service tuning and performance testing -Engage in code review and feedback process -Take a feature from inception to completion independently across the stack -Collaborate with UX/UI team, Web Frontend Team and Mobile app team. -Participate in and support the entire SDLC processes I need this project completed as soon as possible. Experience with similar projects and a quick turnaround time are highly preferred. Please only apply if...

I'm keen to find a well-versed ASP.NET MVC core developer to work on building a project from scratch. This task includes: - 4 Web Forms using Razor View and 4 Listing page with Filtering and Search feature. - Code first approach - Wire frames will be shared with shortlisted developer. - Entire code project need to share. - SQL Server DB. Key skills required: - Mastery in ASP.NET MVC core - Proficiency in Entity Framework and Identity Framework - Profound understanding of user authentication protocols - Demonstrable experience with responsive design - Ability in creating professional, corporate designs.

...looking for a skilled developer to create a custom connector for the Prompt Mixer, which interacts with the LlamaIndex chat engine. The goal is to build a connector that functions as a chat engine, leveraging models from OpenAI. 1. Connector Development: - Follow the structure as described in Prompt Mixer’s documentation to create a new connector: Create a Custom Connector Tutorial (). 2. Integration with LlamaIndex Chat Engine: - Implement the functionality as outlined in the LlamaIndex documentation for creating a chat engine (). - Ensure the interaction can handle conversational queries using the LlamaIndex's `ContextChatEngine` class. 3. Document Loader with SimpleDirectoryReader: