Java Development

Core Java (J2SE)

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.

Duration1.5 mths
FormatLive 1-on-1
LevelProfessional
CertificateOsian NSDC
Overview

What this course is about

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. 1

    Core Syntax & OOP

    Week 1

    Classes, objects, inheritance and the object-oriented mindset.

  2. 2

    Collections & Generics

    Week 2

    Lists, maps, sets and writing type-safe reusable code.

  3. 3

    Exceptions & Files

    Week 3

    Robust error handling and reading/writing data.

  4. 4

    JDBC & Databases

    Week 4

    Connecting Java to a database and running real queries.

  5. 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.