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What Is A Full Stack Java Developer


In this blog, you will learn about Java full-stack developer skills in depth. But before you dive into this blog, you should know about full-stack web development in brief.

What is Full Stack Web Development?

Full Stack web development is the process of end-to-end software app development. It includes front- and back-end development, designing, testing, and deploying the software. Here, the front end is related to the user interface, and the back end is related to business application workflows.

Skills To Become A Java Full Stack Developer 

Java full stack developer is an expert programmer who uses the popular coding language Java to write programs for application development. A full-stack Java developer has extensive skills in designing, developing, and maintaining Java-based programs. In other words, a Java full-stack developer is a web developer who uses the robust Java language to develop the whole application. So, a Java developer should master a variety of skills.
The following are the key skills a Java full-stack developer must master.

  1. JavaScript
  2. HTML and CSS
  3. Back-end Technologies
  4. Web Hosting Platforms
  5. Web Storage and Databases
  6. Git and Github
  7. DevOps Tools
  8. HTTP and REST
  9. Design Patterns
  10. React
  11. Software Design
  12. Java Servlet Pages (JSP)
  13. Front-end Frameworks

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1. JavaScript

It is one of the top scripting languages with object-oriented features. To add multiple features to web-based apps, JavaScript is popularly used. So, knowing JavaScript is more than essential for a Java full-stack developer. This knowledge helps him to add different features to the web page rather than only text. Also, it is one of the popular client-side coding languages useful to enhance user interaction with the app. Moreover, besides client-side coding, JavaScript is also useful for writing front-end, back-end, and server-side code. Further, it offers several libraries and frameworks, such as React, Angular, JQuery, Ionic, etc., which a Java developer must master.

2. HTML and CSS

A full-stack Java developer should be well-versed in the front-end development skills like HTML, CSS, JavaScript, etc. HTML stands for Hyper Text Markup Language, and CSS stands for Cascading Style Sheets. These are the key skills to develop attractive web pages and to build an effective web presence. Further, these skills help in the web development process and data styling. HTML is a language that helps to present the documents within the web browser. It is one of the building blocks of web designing.

On the other hand, CSS describes the way the elements of HTML work to display web pages. It includes the fonts, colors, page layout, etc., of our web page. The developer will use CSS to make the web page compatible with different screen sizes and devices.

3. Back-end Technologies

The server side of the website will cover the back-end coding part. It is invisible to the clients and users. It ensures the storage and data ordering in the back end to make the website work smoothly in the front end. A Java full-stack developer must be skilled in various back-end techs and frameworks, including managing APIs, building libraries, etc. Some coding languages support the back-end development of a website.

  • Java is a highly scalable and popular coding language useful across all platforms.
  • C++ is a popular and highly versatile coding language useful in back-end development.
  • Python is the essential language in back-end development that helps developers work quickly and integrate systems easily without any issues.
  • PHP is also a widely used scripting language for server-side apps.
  • Solid skills in back-end languages like C#, Scala, etc., will be beneficial.

4. Web Hosting Platforms

The knowledge of web hosting platforms like AWS, Google Cloud, and MS Azure will be an added advantage. These platforms allow the developer to deploy the software product on a cloud service provider. It will give access easily through the web.

5. Web Storage & Databases

A Java full-stack developer should have good knowledge of databases and web storage. The database provides a repository of data to store it for future access and use. Further, a database is managed by DBMS. Data within the database is arranged in multiple rows, columns, and tables, which makes it easier to access, manage, and update. To understand the creation and manipulation of queries within databases, a developer should understand them.
Moreover, web storage is the feature that allows developers to store data on the client side within the browser. This data will not expire because it is locally stored and will remain available even if the browser is closed.

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6. Git and Github

These skills are also essential for a full-stack developer. A full-stack Java developer should know about the version control systems that help to manage and keep track of the changes made within the source code. Git is a popular VCS (version control system) that allows you to manage various changes made within the apps, websites, or code regarding the app development. Further, Git is a tool that helps to manage multiple versions of source code edits.

On the other hand, Github is an open-source web-based repository that offers free hosting services. It allows the developer to track the minor changes to be made in the application. So, having a Github profile with Git experience will add more value to the full-stack Java developer’s profile.

7. DevOps Tools

DevOps combines development and operations, streamlining the project in a complex environment. DevOps tools and techniques help to simplify the development process. They help to enhance productivity and efficiency by automating complex manual tasks. Teams working on large-scale projects can use DevOps’s help to speed up the software development and delivery process. Further, a full-stack Java developer should have the DevOps skills such as Jenkins, Docker, Kubernetes (K8s), etc.

  • Jenkins is a popular DevOps tool that helps the project with continuous integrations.
  • Docker is also a well-known tool and software platform that allows app development, testing, and deployment quickly.
  • On the other hand, K8s is a popular open-source platform that automates deploying, scaling, and managing apps within the containerized space.

8. HTTP and REST

HTTP stands for Hyper Text Transfer Protocol which forms the base of the world wide web (www). A full-stack Java developer must acquire the skills relating to HTTP. Further, HTTP is a networking and communication protocol that helps transfer information from one device to another.
REST allows accessing documents stored within a specific area. Further, REST API is a kind of translator that helps the back end to know what is happening in the front end. Therefore, getting these skills will help full-stack developers to master front-end techs.

9. Design Patterns

In the full-stack development process, design patterns provide some solutions to issues relating to common software design while developing apps. They offer a way to resolve frequent design issues and promote the reusability and scalability of the code. A Java full-stack developer should have strong skills relating to design patterns. These include MVC, Builder, Factory Method, Singleton, etc.

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10. React

React is a popular framework useful in front-end development. It is an open-source library based on JavaScript that offers multiple functionalities with less coding. Further, React makes it easier to develop dynamic web apps. Also, it provides the benefit of using reusable components and virtual DOM that reduces the app development time. So, having React skills will give an additional benefit to the Full Stack Developer.

11. Software Design

The design of the software plays a key role in the app development. It is necessary to have the knowledge and skills relating to software design for a full-stack developer. Software design aims to transform user requirements into a suitable format that helps coders code and implement software.

12. Java Servlet Pages (JSP)

JSP is a web-based technology that helps develop dynamic web content and web apps. It provides the ability to build independent web pages that are flexible, scalable, and easy to maintain. Further, they are separate from the browser and server.

13. Front-end Frameworks

A Java full-stack developer should have strong skills in various front-end frameworks and libraries such as Bootstrap. These are useful in developing highly responsive and attractive UIs.
So, these are the essential skills a Java developer should possess in full-stack development. Further, having good analytical and problem-solving skills will benefit a developer.

Conclusion

A Java full-stack developer should possess all the above skills to master full-stack development. The advancing technologies and growth in the software industry can change how business is done. Therefore, the demand for full-stack developers in Java will increase, and it can shape the career of many aspirants. To get more ideas and information on full-stack development, stay tuned.

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SAP EWM Modules | A Complete Guide on SAP EWM Modules


What is SAP EWM (Extended Warehouse Management) 

It is one of the functional modules which is used to manage warehouse inventory and supports the processing of goods movements. The SAP EWM also allows organizations to control both inbound and outbound delivery process delivery. and movements in the warehouse. The main purpose to use EWM is to manage the outbound and inbound delivery process, maintain goods receipts, solve goods issues, fulfill customer orders, and goods distributions.

*Note: the SAP EWM is quite different from warehouse management (mostly used in supply chain management) as it offers many advanced features like picking up of goods, RF frameworks, warehouse structure, and flexible enough to manage the warehouse management functions.

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Salient features of SAP EWM :

SAP EWM signifies the major key features which are considered so important in any organization; Let us explain one by one;

  • With the help of SAP EWM, users can control the various warehouse activities such as picking, posting, managing storage, and good sales document types.
  • The SAP EWM helps you to set the alert before the goods receipt transfer from EWM to the SAP ERP system along with this feature, users are also able to perform corrections, reversal, and inbound delivery split from the SAP EWM to the SAP ERP system.
  • Users can also perform deconsolidation of the handling of various units that contain product details and their storage locations.
  • Users can also determine the storage concepts like product slotting, and optimize the goods arrangements for the warehouse automatically.
  • The SAP EWM functional module allows users to perform various tasks like work packaging, and also monitor the warehouse activities which are performed by the warehouse employees.
  • The SAP EWM also helps organizations to keep track of the vehicles, and other transportation units (it consists of a yard-in check-in and yard-out checkout) activities.
  • SAP EWM also comprises storage and handling of various hazardous substances (such as SAP environmental health, and safety EHS).
  • SAP EWM allows organizations to store the labor time, and resource usage effectively( managing the resources effectively).
  • The SAP EWM cockpit allows users to perform the transportation of products to various warehouse centers.

SAP EWM modules :

Here we come to the actual topic of the post, the SAP EWM supports a lot of different functional modules. Let’s start learning them one by one;

In this blog, we are going to concentrate only on the functional modules and customer existing transactions. Each functional module is combined with the transactions to create a simple screen or to enhance the current available functional module to meet the specific customer’s requirements.

Processing TRs(transfer requirements) using the functional module :

This type of functional module allows users to create or change the transfer requirements in the warehouse management. You can make use of these types of functional modules instead of using batch input processes this improves the performance of batch input processing.

To perform this action, the following are the important functional modules available:

  • L _TR_CREATE_CHECK ->this functional module helps to perform plausibility checks.
  • L_TR_CREATE_UPDATE -> this functional module helps to database updated according to plausibility checks.
  • L_TR_CREATE -> perform plausibility checks and database updates.
  • L_TR_CANCEL -> cancel plausibility checks and database updates.

Processing TOs using the functional module :

In warehouse management, users can create, confirm, and change the transfer order using the various functional modules. Let us make a list of them;

  • Report SAPML03T -> this Report SAPML03T consists of the screens and tasks necessary to process external documents.
  • Function group LO34 -> this function group contains the essential internal data for creating and confirming the transfer orders and calls up the update program. The function modules from group L034 are for internal use and are therefore not released to customers.
  • Function group L03B -> this function group L03B contains the functional modules that you should use instead of batch input or CALL transaction using since they are considerably easier to manage.
  • L_TO_CREATE_SINGLE -> create a transfer order (TO) within a single item.
  • L_TO_CREATE_MULTIPLE -> create a transfer order with two or more items.
  • L_TO_CREATE_MOVE_SU -> create a transfer order to move a storage unit.
  • L_TO_CREATE_MOVE_LSR -> initiate a stock transfer of storage units from an external system.
  • L_TO_CREATE_TR -> create a transfer order for transfer requirements.
  • L_TO_CREATE_DN -> create a transfer order for delivery.
    L_TO_CONFIRM -> confirm a transfer order.
  • L_TO_CONFIRM_SU -> confirm a transfer order for a storage unit.
  • L_TO_CANCEL -> cancel a transfer order.
  • L_REF_CREATE -> create a transfer order using multiple processing.
  • L_TO_CREATE_2_STEP_PICKING -> create a transfer order for 2 step picking.
  • L_TO_CREATE_POSTING_CHANGE -> create transfer order for posting changes.

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Delivery functional modules:

These delivery functional modules enable users to deliver the output or sales-related documentation. Let us know them one by one;

  • BAPI_OUTB_DELIVERY_CHANGE ->Logistics execution of BAPI functions.
  • BAPI_PO_CHANGE -> change purchase order.
  • BAPI_TRANSACTION_COMMIT ->execute external commit when using BA PIs.
  • BAPI_PO_CREATE1 -> Create a purchase order.
  • BAPI_GOODSMVT_CREATE ->  post goods movements with MB_CREATE_GOODS_MOVEMENT.
  • WS_DELIVERY_UPDATE -> update about the warehouse goods delivery.
  • GN_DELIVERY_CREATE -> defines the sales document basic functions.
  • L_TO_CONFIRM -> confirm transfer order.
  • BAPI_SAG_CHANGE -> change scheduling agreements.
  • BAPI_SCHEDULE_MAINTAIN -> maintenance of scheduling agreement and delivery schedule lines.
  • BAPI_SAG_GETDETAIL -> read out details from the scheduling agreement.
  • BAPI_OUTB_DELIVERY_REJECT -> rejection of delivery changes from WME.
  • GUI_UPLOAD -> Upload for the data provider.
  • BAPI _DELIVERYPROCESSING_EXEC -> Logistic delivery processing execution.
  • WS_DELIVERY_UPDATE2 ->sales documents functionalities.
  • CHANGE_DOCUMENT_READ_POSITIONS ->change document read change documents item. 
  • BAPI_CONTRACT_CREATE ->BAPI to create a purchase contract.
  • RV_DELIVERY_CREATE -> create the delivery documents.
  • L_TO_CREATE_DN -> create a transfer order for a delivery note.
  • BAPI_INB_DELIVERY_CHANGE -> inbound processing delivery change.
  • BBP_OUTB_DELIVERY_SPLIT_DEC -> BAPI for subsequent outbound-delivery split from a decentralized system.
  • BAPI_HU_PACK -> BAPI for packing an item into an HU.
  • BAPI_INCOMINGINVOICE_CHANGE -> invoice verification: change provisional invoice.
  • BAPI_OUTB_DFELIVERY _SAVEREPLICA -> BAPI function module for replication of outbound deliveries.
  • WS_REVERSE_GOODS_ISSUE -> this functional module will help you to resolve the issues related to the warehouse goods.
  • BAPI_INB_DELIVERY_SAVEREPLICA ->BAPI function module for replication of inbound deliveries.
  • IDOC_INPUT_INVOICE_FI -> EDI: Invoice receipt (Invoice).

frequently asked SAP EWM Interview Questions and Answers

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A customer exits functional module for TR selection:

Below are a few major customers exits functional module that permits you to create customer-specific projects used to select the transfer requirements for the automatic creation of transfer orders.

  • MWMTOAU1 -> this task allows you to influence the section of transfer requirements for the automatic creation of the transfer orders.
  • MWMTOAU2 ->this task allows you to influence the selection of transfer requirements for the automatic creation of the multiple transfer orders using groups.

Customer exits for creating and confirming TOs:

The following functional modules define the customer-specified logics that permit you to involve in the storage bin search process, and afterward to update the customer data using creating and confirming the transfer orders.

  • MWMTO001 -> this module update the own data after creating transfer orders.
  • MWMTO002 -> this module updates its own data after confirming transfer orders.
  • MWMTO003-> customer-defined putaway strategy, this task allows you to create and implement your own putaway strategies.
  • MWMTO004 -> customer-defined picking strategy, and also allows you to create and implement your own picking strategy.
  • MWMTO005 -> TO-related underdelivery.
  • MWMTO006 -> storage bin related over delivery.
  • MWMTO007 -> palletization and storage type search for putaway.
  • MWMTO008 -> storage type search for picking. This task also allows you to create your own storage type search strategy for stock picking.
  • MWMTO009 -> prevents deletion of TO items, this task makes it possible to prevent the deletion of the transfer order items.

Creating/confirming TOs online or through update programs:

For warehouse management, the update programs for creating or confirming transfer orders can be controlled through a separate parameter. Updates for the normal transactions are carried out through the update programs. To perform this task, change the program ML03TPAR.

  • DEF_VERBU_CREATE -> this functional module helps you to create default transfer orders with the values “x” for update via the update program and “ “ for update without changing the online process.
  • DEF_VERBU_CONFIRM -> default value for the confirming transfer orders with the value “X” for update without changing the online processes.
  • COMMIT_WORK -> this functional module allows you to post data in the system without running.
  • SET UPDATE TASK LOCAL -> the system posts the data synchronization data updates with the help of this functional module.

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Final words:
In this SAP EWM module blog, we have listed out major functional modules and tried to provide a description of each module. Our main aim to develop these core topics is to adhere or guide many SAP communities around the globe to enhance the skills with respect to the modules. Keep on updating yourself to recent trends or technologies to accelerate your SAP career.

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