COMPLETE CORE JAVA MASTER PROGRAM

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Introduction to Java

Learn what Java is, its history, editions, and the JVM/JRE/JDK architecture.

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Learning objectives • What is Programming • What is Java • History of Java • Features of Java • Java Editions (SE, EE, ME) • Java Architecture (JVM, JRE, JDK) • Compilation & Execution Process

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Environment Setup

Set up your Java environment and successfully compile and run your first program.

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Learning objectives • What is JDK • Installing Java • Setting Environment Variables • Writing First Java Program • Compilation using javac • Execution using java

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Java Program Structure

Understand how a Java program is structured and follow correct coding conventions.

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Learning objectives • What is a Class • Structure of Java Program • main() Method • Comments in Java • Naming Conventions

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Variables & Data Types

Master variables, Java data types, casting, and wrapper classes.

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Learning objectives • What is a Variable • Primitive Data Types • Non-Primitive Data Types • Type Casting • Wrapper Classes

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Operators

Learn operator types and how to use them for computations and decisions.

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Learning objectives • What are Operators • Arithmetic Operators • Relational Operators • Logical Operators • Bitwise Operators • Assignment Operators • Unary & Ternary Operators

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Input & Output

Use Java I/O to display output and capture user input with correct formatting.

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Learning objectives • What is Input/Output • System.out.println() • Scanner Class • Formatting Output

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Conditional Statements

Control program flow using if/else and switch statements.

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Learning objectives • What is Decision Making • if • if-else • nested if • switch statement

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Loops

Repeat tasks using loop constructs and manage loop execution with break/continue.

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Learning objectives • What are Loops • for loop • while loop • do-while loop • break • continue • labeled loops

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Methods

Write reusable methods, use parameters/returns, and apply overloading and recursion.

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Learning objectives • What is a Method • Method Declaration & Definition • Parameters & Arguments • Return Types • Method Overloading • Recursion • Static Methods

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Arrays

Work with array types, operations, and understand when to use ArrayList instead.

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Learning objectives • What is an Array • One-Dimensional Arrays • Multi-Dimensional Arrays • Array Operations • Arrays vs ArrayList

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Classes & Objects

Learn how classes model objects and how to add instance state and behavior.

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Learning objectives • What is a Class • What is an Object • Creating Classes • Instance Variables • Methods

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Constructors

Initialize objects using constructors and understand the role of this.

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Learning objectives • What is Constructor • Types of Constructors • Constructor Overloading • this Keyword

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Encapsulation

Hide internal data and expose behavior through getters/setters.

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Learning objectives • What is Encapsulation • Data Hiding • Getters & Setters

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Inheritance

Build class hierarchies using inheritance and override behavior safely with super.

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Learning objectives • What is Inheritance • Types of Inheritance • super Keyword • Method Overriding

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Polymorphism

Understand how overloading and overriding enable polymorphism at different times.

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Learning objectives • What is Polymorphism • Method Overloading • Method Overriding • Compile-time vs Runtime

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Abstraction

Use abstraction to define contracts and share partial implementations.

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Learning objectives • What is Abstraction • Abstract Classes • Abstract Methods

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Interfaces

Define interfaces and use default/static methods to evolve contracts.

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Learning objectives • What is Interface • Multiple Inheritance using Interfaces • Default Methods • Static Methods

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String Handling

Master string usage, mutability differences, and key String methods.

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Learning objectives • What is String • String Methods • StringBuffer • StringBuilder • Immutability

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Wrapper Classes

Use wrapper classes and understand autoboxing/unboxing behavior.

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Learning objectives • What are Wrapper Classes • Autoboxing • Unboxing

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Packages

Organize code with packages and control visibility using access modifiers.

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Learning objectives • What is Package • Built-in Packages • Creating Packages • Access Modifiers

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Exception Handling

Handle errors using try/catch/finally and build custom exceptions.

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Learning objectives • What is Exception • Types of Exceptions • try • catch • finally • throw • throws • Custom Exceptions

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Java I/O

Read/write files and serialize/deserialize objects using core Java I/O classes.

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Learning objectives • What is File Handling • File Class • FileInputStream • FileOutputStream • BufferedReader • BufferedWriter • Serialization • Deserialization

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Collections Overview

Understand the Java Collections Framework architecture and its core interfaces/classes.

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Learning objectives • What is Collection Framework • Interfaces & Classes

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List Interface

Use List implementations and choose the right structure for your needs.

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Learning objectives • What is List • ArrayList • LinkedList • Vector • Stack

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Set Interface

Master Set types for unique element storage and ordered/unordered behavior.

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Learning objectives • What is Set • HashSet • LinkedHashSet • TreeSet

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Map Interface

Use Map implementations and understand their ordering and performance characteristics.

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Learning objectives • What is Map • HashMap • LinkedHashMap • TreeMap • Hashtable

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Iteration

Iterate through collections using iterators and the enhanced for-each loop.

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Learning objectives • What is Iterator • Iterator • ListIterator • for-each loop

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Multithreading Basics

Create and manage threads, and understand their lifecycle states.

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Learning objectives • What is Thread • Thread Lifecycle • Creating Threads • Runnable Interface

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Synchronization

Coordinate threads safely with synchronization and inter-thread communication.

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Learning objectives • What is Synchronization • synchronized Keyword • Inter-thread Communication • wait(), notify(), notifyAll()

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Concurrency Utilities

Use modern concurrency utilities like Executors, Callable, and Future.

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Learning objectives • What is Concurrency • Executor Framework • Callable • Future

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Generics

Write type-safe code with generics using generic classes and methods.

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Learning objectives • What is Generics • Generic Classes • Generic Methods

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Lambda Expressions

Use lambdas and method references with functional interfaces.

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Learning objectives • What is Lambda Expression • Functional Interfaces • Method References

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Stream API

Process data streams using filtering, mapping, and collectors.

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Learning objectives • What is Stream API • Stream Operations • Filtering • Mapping • Collectors

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Date & Time API

Work with Java date/time types and format values correctly.

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Learning objectives • What is Date API • LocalDate • LocalTime • LocalDateTime • Formatting

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Annotations

Use built-in annotations and create custom annotations.

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Learning objectives • What is Annotation • Built-in Annotations • Custom Annotations