Complete Java Programming Masterclass for Teens

📚 Topics Covered

• What is programming? Why Java? Real-world Java applications
• How computers understand code: compilation and execution
• Java history: from coffee to code that runs everywhere
• Installing Java JDK and understanding versions
• Setting up IntelliJ IDEA (student edition)
• Your first Java program: Hello World explained
• Understanding main method and program structure
• Basic program flow and execution
• Using the command line to compile and run Java
• Introduction to debugging and reading error messages

• Code comments and documentation basics
• Programming mindset: how to think like a developer

📚 Topics Covered

• Variables: storing information in programs
• Primitive data types: int, double, boolean, char
• Declaring and initializing variables
• Naming conventions and best practices
• Arithmetic operators: +, -, *, /, %
• Order of operations (PEMDAS in programming)
• Type casting and conversion
• String basics: creating and concatenating
• Reading user input with Scanner class
• Formatting output with printf

• Constants and final keyword
• Common programming errors and how to fix them

📚 Topics Covered

• Boolean logic: true and false
• Comparison operators: ==, !=, <, >, <=, >=
• If statements: making decisions in code
• If-else chains for multiple conditions
• Nested if statements
• Logical operators: && (AND), || (OR), ! (NOT)
• Switch statements for multiple choices
• Ternary operator for simple conditions
• Program flow visualization
• Debugging conditional logic

• Common logic errors and edge cases
• Writing readable conditional code

📚 Topics Covered

• Why loops? Automation and efficiency
• While loops: repeat while condition is true
• Do-while loops: execute at least once
• For loops: counting and iteration
• Loop control: break and continue
• Nested loops: loops within loops
• Common loop patterns
• Infinite loops and how to avoid them
• Enhanced for loop (for-each) preview
• Loop performance considerations

• Debugging loops effectively
• Accumulator and counter patterns

📚 Topics Covered

• Introduction to arrays: storing multiple values
• Declaring and initializing arrays
• Accessing array elements with indices
• Array length and bounds checking
• Iterating through arrays with loops
• Common array operations: sum, average, max, min
• Searching arrays: linear search
• Sorting arrays: bubble sort basics
• Two-dimensional arrays (matrices)
• Arrays of strings

• ArrayIndexOutOfBoundsException
• Arrays class utility methods

📚 Topics Covered

• What are methods? Why use them?
• Method structure: return type, name, parameters
• Void methods vs methods with return values
• Passing arguments to methods
• Method overloading: same name, different parameters
• Scope and local variables
• Pass by value in Java
• Recursive methods introduction
• Method documentation with Javadoc
• Testing methods independently

• Helper methods and code organization
• Static vs instance methods preview

📚 Topics Covered

• String class deep dive
• String immutability concept
• Common String methods: length, charAt, substring
• String comparison: equals vs ==
• Case conversion: toUpperCase, toLowerCase
• Searching strings: indexOf, contains
• Replacing and splitting strings
• StringBuilder for efficient string building
• Character class utilities
• Regular expressions basics

• Parsing strings to numbers
• Formatting strings for output

📚 Topics Covered

• Reading from text files
• Writing to text files
• File class and file operations
• Scanner for file input
• PrintWriter for file output
• Try-catch blocks for error handling
• Common exceptions: IOException, FileNotFoundException
• Finally block usage
• Throwing exceptions
• Creating custom exceptions preview

• Best practices for file handling
• Resource management basics

📚 Topics Covered

• Comprehensive review of arrays and methods
• Problem-solving strategies
• Code organization best practices
• Debugging complex programs
• Performance considerations
• Preparing for object-oriented programming

📚 Topics Covered

• Object-Oriented Programming concepts
• Real-world objects vs programming objects
• Creating your first class
• Instance variables (attributes/fields)
• Methods (behaviors)
• Constructors: default and parameterized
• Creating objects with 'new' keyword
• The 'this' keyword
• Getters and setters (accessors/mutators)
• toString() method

• Object references vs primitive values
• Garbage collection basics

📚 Topics Covered

• Information hiding principle
• Access modifiers: public, private, protected, default
• Encapsulation best practices
• Validation in setters
• Immutable objects
• Static variables and methods
• Static vs instance context
• Class constants with static final
• Factory methods pattern introduction
• Singleton pattern basics

• Package organization
• Import statements and classpath

📚 Topics Covered

• Inheritance concept: is-a relationship
• Extending classes with 'extends'
• Super keyword and parent constructors
• Method overriding
• @Override annotation
• Protected access modifier
• Multi-level inheritance
• Object class as universal parent
• equals() and hashCode() methods
• Abstract classes introduction

• When to use inheritance vs composition
• Inheritance best practices

📚 Topics Covered

• Polymorphism: many forms
• Method overriding for polymorphism
• Dynamic method dispatch
• Abstract classes and methods
• Interfaces: contracts for classes
• Implementing multiple interfaces
• Interface default methods (Java 8+)
• Comparable and Comparator interfaces
• Polymorphic arrays and collections
• instanceof operator

• Type casting with objects
• Interface vs abstract class

📚 Topics Covered

• Project planning and design
• UML class diagrams basics
• Code organization and packages
• Documentation with Javadoc
• Testing and debugging OOP code
• Version control with Git basics

📚 Topics Covered

• Collections vs arrays: when to use what
• Collection interface hierarchy
• List interface: ArrayList vs LinkedList
• Set interface: HashSet, TreeSet, LinkedHashSet
• Map interface: HashMap, TreeMap, LinkedHashMap
• Queue and Deque interfaces
• Iterator and ListIterator
• Collections utility class
• Sorting collections with Comparable/Comparator
• Searching and shuffling

• Synchronized collections
• Performance characteristics of collections

📚 Topics Covered

• Why generics? Type safety benefits
• Generic classes creation
• Generic methods
• Bounded type parameters
• Wildcards: ?, extends, super
• Type erasure concept
• Generic interfaces
• Multiple type parameters
• Generic collections deep dive
• Raw types and backwards compatibility

• Best practices with generics
• Common generic patterns

📚 Topics Covered

• Exception hierarchy in Java
• Checked vs unchecked exceptions
• Try-catch-finally deep dive
• Multi-catch blocks
• Try-with-resources statement
• Creating custom exception classes
• Exception chaining
• Best practices for exception handling
• Logging with java.util.logging
• Debugging techniques in IDE

• Using breakpoints effectively
• Stack traces and error analysis

📚 Topics Covered

• Functional interfaces concept
• Lambda expression syntax
• Method references
• Built-in functional interfaces
• Stream API introduction
• Creating streams from collections
• Intermediate operations: filter, map, sorted
• Terminal operations: collect, reduce, forEach
• Parallel streams
• Optional class for null safety

• Stream performance considerations
• Functional programming in Java

📚 Topics Covered

• Thread concept and lifecycle
• Creating threads: Thread class vs Runnable
• Thread priorities and scheduling
• Thread synchronization basics
• Synchronized keyword
• wait() and notify() methods
• Deadlock and how to avoid it
• Thread pools introduction
• Callable and Future
• Concurrent collections

• Thread safety principles
• Common threading problems

📚 Topics Covered

• JavaFX vs Swing: modern GUI development
• JavaFX application structure
• Stage, Scene, and Scene Graph
• Layouts: VBox, HBox, GridPane, BorderPane
• Basic controls: Button, Label, TextField
• Event handling in JavaFX
• CSS styling for JavaFX
• FXML for UI design
• Scene Builder tool
• Images and media in JavaFX

• Menus and toolbars
• Dialogs and alerts

📚 Topics Covered

• TableView for data display
• TreeView for hierarchical data
• ListView and observableList
• ComboBox and ChoiceBox
• DatePicker and ColorPicker
• Charts: PieChart, BarChart, LineChart
• WebView for HTML content
• Custom controls creation
• Binding properties
• Animations and transitions

• Drag and drop functionality
• Keyboard shortcuts

📚 Topics Covered

• Model-View-Controller pattern
• Separating concerns in JavaFX
• Observable pattern in JavaFX
• Data binding deep dive
• MVVM pattern alternative
• Application state management
• Navigation between screens
• Dependency injection basics
• Service layer pattern
• DAO pattern implementation

• Configuration management
• Application packaging

📚 Topics Covered

• JDBC basics and drivers
• Connecting to databases
• SQL review for Java developers
• PreparedStatement vs Statement
• ResultSet processing
• Transaction management
• Connection pooling
• DAO pattern with JDBC
• Database design basics
• SQLite for desktop apps

• MySQL/PostgreSQL integration
• Database migrations

📚 Topics Covered

• Game loop concept
• Sprite handling and animation
• Collision detection
• Game physics basics
• Sound effects and music
• Game state management
• Score and lives system
• Level design principles
• 2D graphics with Canvas
• Input handling for games

• Game optimization techniques
• Packaging games for distribution

📚 Topics Covered

• Abstract Data Types (ADT)
• Implementing dynamic arrays
• Linked Lists: single, double, circular
• Stack implementation and applications
• Queue implementation and variants
• Priority queues and heaps
• Hash tables from scratch
• Collision resolution strategies
• Trees: binary trees basics
• Tree traversal: inorder, preorder, postorder

• Binary search trees
• Balanced trees introduction

📚 Topics Covered

• Linear search and optimizations
• Binary search and variations
• Bubble sort and optimizations
• Selection sort
• Insertion sort
• Merge sort and divide-conquer
• Quick sort and partitioning
• Heap sort
• Counting sort and radix sort
• Sorting stability

• Time complexity analysis
• Space complexity

📚 Topics Covered

• Graph representations: adjacency matrix/list
• Breadth-first search (BFS)
• Depth-first search (DFS)
• Shortest path: Dijkstra's algorithm
• Minimum spanning tree
• Topological sorting
• Dynamic programming introduction
• Recursion and backtracking
• Greedy algorithms
• String algorithms basics

• Pattern matching
• Algorithm design techniques

📚 Topics Covered

• Profiling Java applications
• JVM memory model
• Garbage collection tuning
• Memory leak detection
• CPU profiling
• Optimizing algorithms
• Cache-friendly code
• Benchmark writing with JMH
• Space-time tradeoffs
• Parallel algorithms basics

• When to optimize
• Performance best practices

📚 Topics Covered

• Complex application design
• Algorithm selection
• Performance requirements
• User interface design
• Database design
• Testing strategies

📚 Topics Covered

• How the web works: HTTP protocol
• Client-server architecture
• Request-response cycle
• HTTP methods: GET, POST, PUT, DELETE
• Status codes and headers
• HTML/CSS basics for Java developers
• JavaScript basics for full-stack
• JSON and XML data formats
• RESTful API principles
• Web servers vs application servers

• Tomcat server setup
• Web application structure

📚 Topics Covered

• Servlet API and lifecycle
• HttpServlet class
• Handling GET and POST requests
• Request and response objects
• Session management
• Cookies in Java web apps
• Filters and listeners
• JSP basics and syntax
• JSP directives and actions
• Expression Language (EL)

• JSTL tag library
• MVC with Servlets and JSP

📚 Topics Covered

• Spring Framework overview
• Dependency Injection (DI)
• Inversion of Control (IoC)
• Spring container and beans
• XML vs annotation configuration
• Component scanning
• @Component, @Service, @Repository
• @Autowired and dependency injection
• Bean scopes and lifecycle
• Spring profiles

• Properties and configuration
• ApplicationContext

📚 Topics Covered

• Spring Boot vs Spring Framework
• Spring Initializr and project setup
• Auto-configuration magic
• Embedded servers
• application.properties/yml
• Spring Boot starters
• DevTools for development
• Actuator for monitoring
• Logging in Spring Boot
• Profiles and environments

• Building executable JARs
• Spring Boot CLI

📚 Topics Covered

• @RestController annotation
• @RequestMapping and variants
• Path variables and request parameters
• Request body and response body
• Content negotiation
• Exception handling in REST
• Validation with Bean Validation
• HATEOAS principles
• API versioning strategies
• Swagger/OpenAPI documentation

• Testing REST APIs
• RestTemplate and WebClient

📚 Topics Covered

• JPA and Hibernate basics
• Entity mapping with annotations
• @Entity, @Table, @Column
• Primary keys and generation strategies
• Relationships: @OneToMany, @ManyToOne
• @ManyToMany, @OneToOne
• Spring Data repositories
• Query methods
• Custom queries with @Query
• Pagination and sorting

• Transactions in Spring
• Lazy vs eager loading

📚 Topics Covered

• Database migrations with Flyway/Liquibase
• Query optimization
• N+1 problem solutions
• Caching with Spring Cache
• Redis integration
• MongoDB with Spring Data
• Multiple datasources
• Database connection pooling
• Batch operations
• Stored procedures with JPA

• Auditing with Spring Data
• Database testing strategies

📚 Topics Covered

• Authentication vs authorization
• Spring Security architecture
• In-memory authentication
• Database authentication
• Password encoding
• Form-based login
• Remember me functionality
• CSRF protection
• Method-level security
• Role-based access control

• JWT authentication
• OAuth2 integration

📚 Topics Covered

• Message-driven architecture
• JMS basics
• RabbitMQ with Spring
• Apache Kafka integration
• Spring Integration basics
• Email sending with Spring
• Scheduled tasks
• Async processing
• WebSocket with Spring
• Server-sent events

• File processing pipelines
• Third-party API integration

📚 Topics Covered

• Unit testing with JUnit 5
• Mockito for mocking
• Spring Boot Test
• @MockBean and @SpyBean
• Testing REST controllers
• Testing service layer
• Testing data layer
• Integration testing
• TestContainers
• Test coverage with JaCoCo

• Performance testing
• Contract testing

📚 Topics Covered

• Monolith to microservices
• Microservices principles
• Service decomposition
• Spring Cloud overview
• Service discovery with Eureka
• Load balancing with Ribbon
• Circuit breaker with Hystrix
• API Gateway with Zuul/Gateway
• Configuration server
• Distributed tracing with Sleuth

• Service mesh concepts
• Event-driven microservices

📚 Topics Covered

• Docker fundamentals
• Creating Dockerfiles for Java
• Multi-stage builds
• Docker Compose for development
• Container networking
• Volume management
• Docker registry
• Best practices for Java containers
• JVM in containers
• Container security

• Docker Swarm basics
• Container orchestration intro

📚 Topics Covered

• Kubernetes concepts
• Pods, Services, Deployments
• ConfigMaps and Secrets
• Persistent volumes
• Ingress controllers
• Helm charts
• Scaling applications
• Health checks
• Rolling updates
• AWS basics for Java

• Deploying to cloud
• Monitoring and logging

📚 Topics Covered

• DevOps principles
• Git branching strategies
• Maven/Gradle deep dive
• Jenkins pipelines
• GitHub Actions for Java
• GitLab CI/CD
• Automated testing in CI
• Code quality with SonarQube
• Artifact management
• Release strategies

• Infrastructure as Code
• Monitoring production apps

📚 Topics Covered

• Enterprise architecture design
• Microservices design
• API design and documentation
• Security implementation
• Cloud deployment
• Performance optimization

📚 Topics Covered

• Android ecosystem overview
• Android Studio setup
• Project structure
• Activities and lifecycle
• Layouts: LinearLayout, RelativeLayout
• ConstraintLayout
• Views and ViewGroups
• Handling user input
• Intents and navigation
• Resources and localization

• Debugging Android apps
• Android Virtual Device

📚 Topics Covered

• Material Design principles
• RecyclerView for lists
• CardView layouts
• Navigation Drawer
• Bottom Navigation
• Tabs with ViewPager
• Custom views
• Animations and transitions
• Themes and styles
• Dark mode support

• Responsive layouts
• Accessibility features

📚 Topics Covered

• SharedPreferences
• SQLite databases
• Room persistence library
• Content Providers
• Retrofit for REST APIs
• OkHttp client
• JSON parsing with Gson
• Image loading with Glide/Picasso
• Background tasks
• WorkManager

• Services and BroadcastReceivers
• Notifications

📚 Topics Covered

• MVVM architecture pattern
• LiveData and ViewModel
• Data Binding
• Dependency injection with Dagger/Hilt
• Kotlin for Android basics
• Firebase integration
• Push notifications with FCM
• Google Maps integration
• Camera and media
• Sensors and location

• In-app purchases
• App monetization

📚 Topics Covered

• Unit testing Android apps
• Espresso for UI testing
• Testing ViewModels
• Mocking with Mockito
• Performance optimization
• ProGuard and app size
• App signing
• Google Play Console
• App Store Optimization
• Crash reporting

• Analytics integration
• App updates and versioning

📚 Topics Covered

• Reactive programming principles
• Project Reactor basics
• Mono and Flux
• Operators and transformations
• Error handling in reactive
• Backpressure handling
• Spring WebFlux
• Reactive REST APIs
• Reactive data access
• WebSocket with reactive

• Testing reactive code
• Performance benefits

📚 Topics Covered

• JVM architecture deep dive
• Class loading mechanism
• Memory areas in JVM
• Garbage collection algorithms
• GC tuning strategies
• JVM flags and options
• Memory leak analysis
• Thread dumps analysis
• Heap dumps and MAT
• JProfiler and profiling

• JMH benchmarking
• Performance patterns

📚 Topics Covered

• Gang of Four patterns review
• Creational patterns deep dive
• Structural patterns deep dive
• Behavioral patterns deep dive
• Enterprise patterns
• Domain-Driven Design basics
• Clean Architecture
• Hexagonal Architecture
• Event Sourcing
• CQRS pattern

• Saga pattern
• Anti-patterns to avoid

📚 Topics Covered

• Big Data concepts
• Apache Spark with Java
• Hadoop basics
• Stream processing with Kafka Streams
• Apache Flink introduction
• Machine Learning basics
• Weka library for ML
• Deep Learning with DL4J
• Natural Language Processing
• Computer Vision basics

• ML model deployment
• AI integration in Java apps

📚 Topics Covered

• Blockchain fundamentals
• Cryptocurrency basics
• Smart contracts concept
• Web3j library for Ethereum
• Hyperledger Fabric basics
• Building blockchain in Java
• NFT concepts
• Decentralized applications
• IoT with Java
• Quantum computing intro

• AR/VR basics
• Future of Java

📚 Topics Covered

• Open source ecosystem
• Finding projects to contribute
• Understanding large codebases
• Git advanced workflows
• Creating quality pull requests
• Code review etiquette
• Documentation contributions
• Creating your own library
• Publishing to Maven Central
• Building community

• Open source licensing
• Maintaining projects

📚 Topics Covered

• Minecraft Forge setup
• Mod structure and basics
• Creating blocks and items
• Crafting recipes
• Custom entities
• World generation
• GUI creation
• Networking in mods
• Mod configuration
• Testing and debugging

• Publishing mods
• Fabric alternative

📚 Topics Covered

• LibGDX framework
• Game architecture patterns
• Physics engines
• Particle systems
• Procedural generation
• AI for games
• Multiplayer networking
• Game optimization
• Mobile game development
• Publishing games

• Game monetization
• LWJGL for 3D games

📚 Topics Covered

• Large-scale system design
• Distributed systems principles
• CAP theorem and tradeoffs
• Consistent hashing
• Load balancing strategies
• Caching at scale
• Database sharding
• Message queue architectures
• Real-time systems
• Search systems design

• Monitoring and observability
• Disaster recovery

📚 Topics Covered

• Project ideation and planning
• Market research and validation
• Technical architecture design
• Technology stack selection
• Development methodology
• Team collaboration setup
• Project timeline creation
• Risk assessment and mitigation

📚 Topics Covered

• Code implementation
• Testing and quality assurance
• Performance optimization
• Security hardening
• Documentation creation
• Deployment pipeline
• User acceptance testing
• Launch preparation
• Marketing materials
• Demo video creation

📚 Topics Covered

• Resume optimization for Java developers
• Portfolio website creation
• LinkedIn profile optimization
• GitHub profile showcase
• Technical interview preparation
• Data structures review
• Algorithm problem solving
• System design interviews
• Behavioral interview prep
• Salary negotiation

• Job search strategies
• Continuous learning plan