Java Programming
The Java Programming course offers an intensive, expert-led journey from fundamental coding concepts to advanced data structures and algorithms. You will build core proficiency in one of the most widely used enterprise languages, earning a certification that enhances your credibility with potential employers.
The Certificate course for you!
Master OOP, Collections, and error handling with best practices.
Write modern Java with Streams and clean functional patterns.
Intro to Spring Boot & REST APIs—Structure, controllers, and DTOs.
What Will You Learn?
Core Java: Types, control flow, classes/objects, constructors, and encapsulation.
Collections & generics: List, Set, Map, iterators, algorithms, and immutability.
Streams & lambdas: Mapping, filtering, collectors, and parallel streams basics.
Testing & debugging: JUnit, assertions, logging, stack traces, and exceptions.
Course Curriculum
- Install JDK 17 for Windows 0:01 Min
- Programming Tools Setup 0:15 Min
- Hello World 0:01 Min
- Variables 0:03 Min
- Primitive Types 0:02 Min
- Casting in Java 0:02 Min
- Float and Double Primitives 0:02 Min
- The char and boolean Primitive Data Types 0:04 Min
- Primitive Types Recap and the String Data Type 0:02 Min
- Operators, Operands and Expressions 0:06 Min
- Abbreviating Operators 0:02 Min
- First Steps 0:15 Min
- if-then Statement 0:05 Min
- Logical AND Operator 0:02 Min
- Logical OR Operator 0:02 Min
- Assignment Operator VS Equals to Operator 0:02 Min
- Ternary Operator 0:03 Min
- IntelliJ Basics 0:15 Min
- Keywords and Expressions 0:02 Min
- Statements, Whitespace and Indentation (Code Organization) 0:01 Min
- Code Blocks And The If Then Else Control Statement 0:02 Min
- Methods in Java 0:05 Min
- More on Methods 0:03 Min
- Method Overloading 0:03 Min
- Expressions, Statements & More 0:15 Min
- The switch statement 0:02 Min
- The for Statement 0:04 Min
- The while and do while statements 0:05 Min
- Local Variables and Scope 0:01 Min
- Control Flow 0:15 Min
- Introduction to Classes and Objects 0:01 Min
- Introduction to Classes, Using Getter Methods 0:02 Min
- Classes, Using Setters, and Creating Objects 0:01 Min
- Constructors Part 1 0:02 Min
- Constructors Part 2 0:02 Min
- Reference vs Object vs Instance vs Class 0:02 Min
- Static vs Instance Variables 0:02 Min
- The POJO 0:01 Min
- Java's Implicit POJO Type, The Record 0:02 Min
- Inheritance - Part 1 0:02 Min
- Inheritance - Part 2 0:02 Min
- this vs super 0:02 Min
- Method Overloading vs Overriding Recap 0:01 Min
- String Manipulation Methods 0:03 Min
- The StringBuilder class 0:02 Min
- OOP Part 1 - Inheritance 0:15 Min
- Composition 0:03 Min
- Encapsulation 0:02 Min
- Polymorphism 0:02 Min
- Organizing Java Classes, Packages and Import Statements 0:03 Min
- OOP Part 2 - Polymorphism 0:08 Min
- Arrays 0:02 Min
- Using java.util.Arrays (sort, fill, copyOf ) 0:03 Min
- Two-Dimensional Arrays 0:01 Min
- Arrays 0:08 Min
- List and ArrayList Part 1 0:01 Min
- ArrayList Part 2 0:04 Min
- Arrays vs. ArrayLists 0:01 Min
- LinkedList 0:02 Min
- Iterators 0:02 Min
- The enum type continued, with the switch statement 0:02 Min
- Lists, ArrayLists, LinkedLists, Iterators, and Autoboxing 0:10 Min
- Abstraction & Generalization (with overview of abstract and other modifiers) 0:01 Min
- Abstract Classes 0:03 Min
- Interfaces Part 1 0:03 Min
- Interfaces Part 2 0:01 Min
- Interface vs Abstract Class 0:02 Min
- Abstraction 0:10 Min
- Generics Part 1 0:02 Min
- Comparable vs. Comparator 0:03 Min
- Generics 0:10 Min
- Exception Handling: Checked vs. Unchecked, the finally clause 0:05 Min
- Input & Output (I/O), Working with files in java 0:10 Min
- MySQL Installation for Windows 0:03 Min
- Database Basics 0:04 Min
- Using MySQL WorkBench to create database and table 0:02 Min
- JDBC 0:03 Min
- Working with Database 0:10 Min
- Meet Your AI Coding Buddy: Setup + Prompting Basics 0:04 Min
- Plan & Build with AI 0:03 Min
- Debugging + Testing with AI 0:03 Min
- Learn OOP with AI 0:03 Min
- Java Programming with AI 0:10 Min
Learn With GreyLearn
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Focus on practical patterns you’ll use in interviews and real teams.
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Hands-on exercises and mini projects to apply each concept immediately.
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Interview-oriented tips: Debugging, clean commits, and explaining trade-offs clearly.
What Learners Say
utpreksha Icche
I learned readable lambdas and method references the module on concurrency explained risks and patterns i picked up habits that make future work easier
Chaitrali Jatte
Logging tells a honest story of what the code does i read stack traces and debug without panic the course showed how to organize packages
Siddheshwar Magar
I improved how i name variables and classes i use small helpers to keep controllers clean i learned to profile slow code and remove clutter
Jeetu Shukla
Collections and generics now feel natural to use i prefer composition to reduce fragile hierarchies i understand when to use generics for reuse and safety
Shaurya Sharma
I prefer composition to reduce fragile hierarchies debug sessions are shorter because i read signals better i can explain design to non technical teammates
Soumya Ranjan Pradhan
I write clear docs so teammates can onboard fast i can design clean models and simple service layers i understand classes objects and clean method
Frequently Asked Questions
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