Java Full Course 2026
Welcome to the Complete Java Full Course 2026.
This structured Java tutorial series is designed to take you from absolute beginner to advanced level in Java programming.
In this playlist, you will learn:
• Java Basics
• Variables & Data Types
• OOP Concepts (Encapsulation, Inheritance, Polymorphism, Abstraction)
• Constructors & Methods
• Static & Non-static concepts
• Memory Management in Java
• Collections Framework
• Exception Handling
• Multithreading
• Java for Placements & Interviews
This course is perfect for:
College students
Beginners starting programming
Placement preparation
Software engineering interviews
DSA preparation
Anyone who wants strong Java fundamentals
Each lecture is structured step-by-step with deep conceptual clarity and practical examples.
Start from Lecture 1 and follow the playlist in sequence for best results.
Subscribe and stay consistent. Java mastery requires structured learning.
Github Link for Notes & Code : https://github.com/adityatandon15/Java-Full-Course
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Curated by: Coder Army (57 videos)
Currently Playing: Parallel Streams in Java Explained | Primitive Optional Classes | Java Full Course #42
In this lecture, we take a deep dive into Parallel Streams in Java and understand how Java internally handles multi-threaded stream processing using the Fork/Join framework.
If you’ve ever wondered:
How .parallelStream() actually works internally
When parallel streams improve performance (and when they don’t)
What are the hidden pitfalls of parallel execution
Then this video will give you complete conceptual clarity from first principles.
We also cover Primitive Optional Classes like:
OptionalInt
OptionalDouble
OptionalLong
and understand:
Why they exist (problem with boxing/unboxing)
How they are different from Optional
When you should use them in real-world code
Why Learn Java?
Java is one of the most powerful and widely used programming languages in the world.
It is used in:
Backend development
Enterprise applications
Android development
Banking systems
Large-scale distributed systems
If you want to master Data Structures, Spring Boot, Microservices, or System Design, Java fundamentals are essential.
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Code and Notes: Github : https://github.com/adityatandon15/Java-Full-Course
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Timestamps:
Java parallel streams
parallel stream java tutorial
sequential vs parallel streams java
fork join pool java
java multithreading streams
optionalint optionaldouble java
primitive optional classes java
java streams interview questions
java streams performance
java full course
Tracks in this Playlist
- JAVA Full Course | Introduction to JAVA | Java Full Course for Beginners in 2026
- Write Your First JAVA Program | JVM, JDK & JRE Explained | JSE vs JEE vs JME | JAVA Full Course #2
- Java Variables & Data Types Explained | Identifiers, Literals, Keywords | JAVA Full Course #3
- How Java Stores Negative & Floating Point Numbers | Java Full Course #4
- Java Type Conversions & Type Promotions Explained | Casting in Java | Java Full Course #5
- Java Operators | Arithmetic + Unary + Logical + Bitwise + Assignment Operators | Java Full Course #6
- Java Conditional Statements | If, If-Else, If-Else-If Ladder, Switch Explained | Full Java Course #7
- Java Loops & Jump Statements | for, while, do-while, break, continue Explained | Java Full Course #8
- Introduction to Arrays | Declaration, Initialization, Traversal | String Intro | Java Full Course #9
- How Arrays work in Java | Heap, Contiguous Storage, Random Access | Java Full Course #10
- Java Functions Deep Dive | Recursion | Method Overloading | Java Full Course #11
- Object Oriented Programming in Java | Classes, Objects, new Keyword | Java Full Course #12
- Constructors in Java | Constructor Chaining, Overloading & this | Java Full Course #13
- Objects Deep Dive | Size, Call by Value vs Reference | Shallow vs Deep Copy | Java Full Course #14
- Static & Final in Java | Static Methods, Blocks & String[] args | Java Full Course #15
- Encapsulation & Inheritance in Java | Java Packages & Super Keyword | Java Full Course #16
- Abstraction & Polymorphism in Depth | Abstract Class vs Interfaces | Java Full Course #17
- AutoBoxing, Abstract classes & POJOs | Why only one public class in java file | Java Full Course #18
- Java Nested Classes | Static Nested, Inner, Local & Anonymous Classes | Java Full Course #19
- Java I/O Deep Dive | InputStreams, System.in, Scanner vs BufferedReader | Java Full Course #20
- Immutable Classes in Java | How to Create Immutable Objects | Java Full Course #21
- Most Important Class in Java | Object Class (equals, hashCode, toString) | Java Full Course #22
- Java Enums | Why Not Use int/String for Constants? | Java Full Course #23
- Java Interfaces Deep Dive | Default Methods, Functional, Marker Interfaces | Java Full Course #24
- Java Strings | String Pool, Immutability, Internals | Java Full Course #25
- Java Strings Part 2 | All String Methods + StringBuilder vs StringBuffer | Java Full Course #26
- Java Generics Deep Dive | Bounded Types using extends | Java Full Course #27
- Wildcards in Generics | ?, ? extends, ? super | Java Full Course #28
- Java Collection Framework Explained | Data Structures + Complete Hierarchy | Java Full Course #29
- Iterable Interface in Java | Why Iterator Exists? | For-Each Loop | Java Full Course #30
- Java Collection Interface Deep Dive | Methods & Internals | Java Full Course #31
- Java List Interface Deep Dive | ArrayList, LinkedList, Vector, Stack | Java Full Course #32
- Set & Map Interface in Java | Internal Working of HashMap, HashSet & TreeMap | Java Full Course #33
- Set & Map Methods Explained | EnumMaps, IdentityHashMaps & More | Java Full Course #34
- Java Queue Interface Deep Dive | PriorityQueue & Heap Explained | Java Full Course #35
- Comparable Interface in Java | Collections class | Comparing Objects | Java Full Course #36
- Java Lambdas & Functional Interfaces | Comparator Interface | Java Full Course #37
- Lambdas & Functional Interface Deep Dive | Method References & Composition | Java Full Course #38
- Introduction to Java Streams | Creation & Architecture | Java Full Course #39
- Java Stream Methods Deep Dive | All Intermediate & Terminal Operations | Java Full Course #40
- Java Optional Explained from Scratch | All Methods + Streams Integration | Java Full Course #41
- Parallel Streams in Java Explained | Primitive Optional Classes | Java Full Course #42
- Java Exception Handling from Scratch | Exceptions vs Errors | Java Full Course #43
- Exception Hierarchy Deep Dive | throw vs throws | Custom Exceptions | Java Full Course #44
- Java Memory Management Explained in Depth | Stack, Heap, Method Area & PC | Java Full Course #45
- Java Heap Memory Deep Dive | Garbage Collection Algorithms Explained | Java Full Course #46
- Introduction to Multithreading in Java | Process vs Thread | Java Full Course #47
- Java Thread Creation & Lifecycle Explained from Scratch | Java Full Course #48
- Thread Methods | sleep, join, yield, interrupt, isAlive, priority & more | Java Full Course #49
- Problems in Multithreading | Race Condition, Visibility, Ordering Explained | Java Full Course #50
- Monitor Locks in Java | Synchronized Keyword, Static Sync & Custom Locks | Java Full Course #51
- Inter Thread Communication in Java | wait(), notify(), notifyAll() Deep Dive | Java Full Course #52
- Java Locks | ReentrantLock, ReadWriteLock, StampedLock, Semaphore & Condition | Java Full Course #53
- Lock-Free Concurrency in Java | AtomicVariables & CAS Explained | Java Full Course #54
- Lock-Free Concurrency in Java - 2 | CAS Retry, Compare-and-Swap & ABA Problem | Java Full Course #55
- Executor Framework Deep Dive | ThreadPool, Future & Callable | Java Full Course #56
- CompletableFuture, Fork-Join Pool, ThreadLocal & Virtual Threads | Java Full Course #57