Core Java is the essential starting point for every Java career. This course covers syntax, object-oriented programming, collections, exception handling and file work — the fundamentals every Java job assumes you know. Taught one-on-one with real coding exercises, it prepares you for advanced Java, Android or backend paths.
Core Java is taught here as a hands-on, live one-on-one course rather than a stack of videos. Java runs a large share of enterprise and Android software, and strong Java fundamentals open doors across the industry.
Expect to spend most of your time actually doing the work — you’ll write object-oriented Java programs and build small console and backend apps along the way.
You finish with practical work you can show an employer, not just a certificate.
By the end
What you’ll be able to do
✓Write object-oriented Java programs
✓Work with collections and exceptions
✓Build small console and backend apps
✓Understand how large Java systems are structured
Syllabus
How the course flows
1
Core Syntax & OOP
Week 1
Classes, objects, inheritance and the object-oriented mindset.
2
Collections & Generics
Week 2
Lists, maps, sets and writing type-safe reusable code.
3
Exceptions & Files
Week 3
Robust error handling and reading/writing data.
4
JDBC & Databases
Week 4
Connecting Java to a database and running real queries.
5
Build a Project
Weeks 5–6
Putting it together into a working application.
Toolkit
Tools you’ll use
Java (JDK)IntelliJ IDEA / EclipseMavenMySQLGit
Fit
Who it’s for
Beginners who want a structured, guided way into java development
Working professionals switching into or upskilling within java development
Freelancers who want to offer Core Java as a paid service
Anyone who prefers learning live and one-on-one over watching videos alone
Where it leads
Roles this opens up
Java Developer
₹4–16 LPA
Build enterprise backends and services in Java.
Backend Engineer
₹6–18 LPA
Design APIs and server logic for large applications.
Android Developer
₹4–14 LPA
Build Android apps on the Java stack.
Questions
Before you enroll
Yes — resume help, mock interviews and referrals through our hiring-partner network are included with the course.
You’ll finish with practical work — write object-oriented Java programs — plus an Osian Academy certificate you can share with employers.
Yes. Because it’s one-on-one, sessions are booked around your availability, including evenings and weekends.
Every session is live and one-on-one with your instructor. Nothing here is a pre-recorded playlist you watch alone.