Cognizant Digital Nurture 5.0

Java Full Stack Engineer Deep Skilling

Hands-on implementation repository for Cognizant Digital Nurture 5.0 Java Full Stack Engineer track.

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Week 1 · Week 2 · Week 3 · Week 4 · Week 5 · Week 6 · Week 7

Course Modules

Week 1: Core Java & Design Foundations click

Design Patterns

• Singleton Pattern - Singleton pattern demo with thread‑safe eager/lazy initialization for single‑instance management in DB, logging, and config use cases.

• Factory Pattern - Factory Method pattern demo with decoupled object creation, flexible dependency resolution, and polymorphic instantiation.

Data Structures & Algorithms

• Data Structures & Algorithms - Core algorithm practice with arrays, linked lists, trees, graphs, and complexity‑driven problem solving.

Database Management

• PL/SQL - Backend SQL development with stored procedures, triggers, optimized relational design, and transaction‑safe performance tuning.

Testing Frameworks

• JUnit Testing Exercises - JUnit 4 unit testing with lifecycle management, assertions, fixtures, parameterized suites, and best‑practice coverage design.

• Mockito Integration Exercises - JUnit 5 testing with advanced mocking, stubbing, and interaction verification for isolated dependency management.

Enterprise Logging

• SLF4J & Logback Configuration - Enterprise logging setup with SLF4J + Logback, standardized console formatting, and flexible appenders for conditional strategies.

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Week 2: Spring Framework Essentials (click)[./Week%202]

Spring Core & Dependency Injection

• Spring Core - Container Routing - Spring Framework project with XML‑based context, manual DI, IoC container wiring, and traditional bean lifecycle management.

• Maven Plugin Application - Maven multi‑module project with Spring Core dependency management, Java 1.8 compiler config, and streamlined artifact packaging.

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Week 3: REST API & Spring Boot Development click

Spring Boot Microservices

• REST API Development - Spring Boot Fundamentals - Spring Boot REST API with auto‑config, embedded Tomcat, custom logging, and robust request/response handling.

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Week 4: Microservices & API Gateway click

Service Discovery & API Gateway Routing

• Microservices for Account and Loan - Spring Cloud microservices with Eureka discovery, API Gateway, and unified logging across Account, Loan, and Greet services.

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Week 5: ReactJS-HOL click

• 1. ReactJS-HOL - Set up a React environment using Create React App.
• 2. ReactJS-HOL - Created and rendered multiple React components.
• 3. ReactJS-HOL - A React‑based Student Management Portal.
• 4. ReactJS-HOL - React blog app demonstrating lifecycle hooks.
• 5. ReactJS-HOL - React dashboard for tracking cohort details.

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Week 6: Git-HOL click

• 1. Git-HOL - Setup and Basic Commands.
• 2. Git-HOL - Git Ignore.
• 3. Git-HOL - Branching and Merging.
• 4. Git-HOL - Conflict Resolution.
• 5. Git-HOL - Clean Up and Push.

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Week 7: Angular Hands-on click

• 1. Angular Hands-on - Student Course Portal - Comprehensive 10-part Angular (v20.0) application implementing:
  • Hands-On 1: Workspace scaffolding, configuration analysis (notes.txt), budget thresholds, and page layout components (Header, Home, CourseList, StudentProfile).
  • Hands-On 2: 4 Angular binding types ({{}}, [property], (event), [(ngModel)]), lifecycle hooks (ngOnInit, ngOnChanges, ngOnDestroy), @Input/@Output parent-child communication.
  • Hands-On 3: Built-in directives (*ngIf, *ngFor, *ngSwitch, [ngClass], [ngStyle]), custom attribute directive (HighlightDirective), and custom pipe (CreditLabelPipe).
  • Hands-On 4: Template-driven form with built-in validators, #enrollForm="ngForm", contextual error states, and form reset capability.
  • Hands-On 5: Reactive form with FormBuilder, FormArray dynamic controls, custom synchronous validator (noCourseCode), and custom async validator (simulateEmailCheck).
  • Hands-On 6: Angular services, singleton DI pattern (CourseService, EnrollmentService), service-to-service injection, and component-level providers (NotificationService).
  • Hands-On 7: Angular Router setup, dynamic route parameters (:id), query parameters (?search=), route guards (AuthGuard, UnsavedChangesGuard), and wildcard 404 handler.
  • Hands-On 8: HttpClient REST API integration with json-server (db.json), RxJS operators (map, tap, catchError, retry, switchMap), and functional interceptors (AuthInterceptor, ErrorHandlerInterceptor, LoadingInterceptor).
  • Hands-On 9: State management using NgRx Store, actions, reducers, effects (CourseEffects), memoized feature selectors, and cross-slice selectors (selectEnrolledCourses).
  • Hands-On 10: Unit testing with Jasmine, Karma & TestBed for components (CourseCardComponent), services (HttpClientTestingModule), and NgRx connected components (MockStore).