Course Roadmap

27 sections230 chapters

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#	Section / Chapter	Priority
1	Welcome
	Course Roadmap
	Course Setup
	Join the Community
2	Introduction to Java
	What is Java?	Low
	History of Java	Low
	Features of Java	Low
	JDK, JRE, and JVM	Medium
	Setting Up Environment	Low
	First Java Program	Low
	How Java Works	Low
3	Basic Syntax
	Variables & Data Types	High
	Primitive Types	High
	Reference Types	High
	Type Casting	Medium
	Operators	High
	Input & Output	Medium
	Comments	Low
	Naming Conventions	Low
4	Control Flow
	If-Else Statements	High
	Switch Statement	Medium
	For Loop	High
	While Loop	High
	Do-While Loop	Medium
	Enhanced For Loop	High
	Break & Continue	High
	Labeled Statements	Low
5	Arrays
	Arrays Basics	High
	Array Operations	High
	Multidimensional Arrays	Medium
	Arrays Class	Medium
	Copying Arrays	Medium
6	Strings
	String Basics	High
	String Methods	High
	String Immutability	High
	StringBuilder	High
	StringBuffer	Medium
	String Formatting	Medium
	String Comparison	High
	Regular Expressions	Medium
7	Methods
	Methods Basics	High
	Method Parameters	High
	Return Types	High
	Method Overloading	High
	Variable Arguments (Varargs)	Medium
	Recursion	High
	Pass by Value	High
8	Object-Oriented Programming
	Classes & Objects	High
	Constructors	High
	this Keyword	High
	Access Modifiers	High
	Getters & Setters	High
	static Keyword	High
	final Keyword	High
	Initializer Blocks	Low
	Inner Classes	Medium
	Anonymous Classes	Medium
	Record Classes	Medium
	Sealed Classes	Low
9	Inheritance
	Inheritance Basics	High
	extends Keyword	High
	super Keyword	High
	Method Overriding	High
	Constructor Chaining	Medium
	Object Class	High
	instanceof Operator	Medium
10	Polymorphism
	Polymorphism Basics	High
	Compile-Time Polymorphism	High
	Runtime Polymorphism	High
	Dynamic Method Dispatch	Medium
	Covariant Return Types	Low
11	Abstraction
	Abstract Classes	High
	Abstract Methods	High
	Interfaces	High
	Default Methods	Medium
	Static Interface Methods	Medium
	Private Interface Methods	Low
	Functional Interfaces	High
	Marker Interfaces	Low
12	Encapsulation
	Encapsulation Basics	High
	Data Hiding	High
	Immutable Classes	High
13	Packages & Modules
	Packages	Medium
	import Statement	Medium
	Static Import	Low
	Java Modules (JPMS)	Low
	module-info.java	Low
14	Exception Handling
	Exception Basics	High
	try-catch Block	High
	Multiple Catch Blocks	High
	finally Block	High
	throw Keyword	High
	throws Keyword	High
	Checked vs Unchecked Exceptions	High
	Custom Exceptions	High
	try-with-resources	Medium
	Exception Chaining	Medium
15	Collections Framework
	Collections Overview	High
	Collection Interface	High
	List Interface	High
	ArrayList	High
	LinkedList	High
	Vector	Low
	Stack	High
	Set Interface	High
	HashSet	High
	LinkedHashSet	Medium
	TreeSet	High
	Queue Interface	High
	PriorityQueue	High
	Deque Interface	High
	ArrayDeque	High
	Map Interface	High
	HashMap	High
	LinkedHashMap	Medium
	TreeMap	High
	Hashtable	Low
	Concurrent Collections	Medium
	Collections Utility Class	Medium
	Comparable & Comparator	High
	Iterator & ListIterator	High
16	Generics
	Generics Basics	High
	Generic Classes	High
	Generic Methods	High
	Bounded Type Parameters	Medium
	Wildcards	Medium
	Type Erasure	Medium
	Generic Restrictions	Medium
17	Lambda & Streams
	Lambda Expressions	High
	Method References	High
	Streams Basics	High
	Stream Operations	High
	Intermediate Operations	High
	Terminal Operations	High
	Collectors	Medium
	Parallel Streams	Medium
	Optional Class	Medium
18	File I/O
	File Class	Medium
	FileInputStream & FileOutputStream	Medium
	FileReader & FileWriter	Medium
	BufferedReader & BufferedWriter	Medium
	PrintWriter	Low
	Scanner Class	Medium
	Serialization	Medium
	Deserialization	Medium
	NIO Package	Medium
	Paths & Files	Medium
	File Channels	Low
19	Multithreading
	Threads Basics	High
	Creating Threads	High
	Thread Lifecycle	High
	Thread Methods	High
	Thread Priority	Low
	Synchronization	High
	Synchronized Blocks	High
	volatile Keyword	High
	Deadlock	High
	Thread Communication	High
	Thread Pools	High
	Executor Framework	High
	Callable & Future	High
	CompletableFuture	High
	Locks & Conditions	High
	ReentrantLock	High
	ReadWriteLock	Medium
	Semaphore	Medium
	CountDownLatch	Medium
	CyclicBarrier	Medium
	Fork/Join Framework	Low
	Atomic Classes	Medium
	Virtual Threads (Project Loom)	Medium
20	Java Memory Model
	Memory Model Basics	Medium
	Heap & Stack	High
	Garbage Collection	High
	GC Algorithms	Medium
	Memory Leaks	Medium
	Weak, Soft & Phantom References	Low
21	Annotations
	Annotations Basics	Medium
	Built-in Annotations	Medium
	Custom Annotations	Medium
	Retention Policy	Low
	Annotation Processing	Low
22	Reflection
	Reflection Basics	Medium
	Class Object	Medium
	Inspecting Classes	Medium
	Accessing Fields & Methods	Medium
	Creating Instances Dynamically	Low
	Reflection Use Cases	Medium
23	Networking
	Networking Basics	Medium
	InetAddress	Low
	URL Class	Low
	URLConnection	Low
	Sockets	Medium
	Server Sockets	Medium
	Datagram Sockets (UDP)	Low
	HTTP Client	Medium
24	JDBC
	JDBC Basics	Medium
	JDBC Drivers	Low
	Connecting to Database	Medium
	Statement Interface	Medium
	PreparedStatement	Medium
	CallableStatement	Low
	ResultSet	Medium
	Transactions	Medium
	Connection Pooling	Medium
25	Date & Time API
	Date & Time Overview	Medium
	LocalDate	Medium
	LocalTime	Medium
	LocalDateTime	Medium
	ZonedDateTime	Medium
	Instant	Medium
	Duration & Period	Medium
	DateTimeFormatter	Medium
26	Modern Java Features
	var Keyword (Java 10)	Medium
	Text Blocks (Java 15)	Medium
	Switch Expressions (Java 14)	Medium
	Pattern Matching for instanceof (Java 16)	Medium
	Pattern Matching for switch (Java 21)	Medium
	Records (Java 16)	Medium
	Sealed Classes & Interfaces (Java 17)	Low
	Unnamed Patterns (Java 22)	Low
	Sequenced Collections (Java 21)	Low
	String Templates (Java 21)	Low
27	Best Practices
	Coding Standards	Medium
	Effective Java Tips	Medium
	Clean Code Principles	Medium
	Common Pitfalls	Medium
	Performance Optimization	Medium
	Testing Basics	Low
	JUnit Testing	Medium
	Debugging Techniques	Low

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