Java Classes Online in Australia | Teens, Uni and Adults

In short

Java classes online teach Java, a strongly typed object-oriented language, through live lessons over video. Students write classes, use collections such as lists, sets and maps, handle exceptions and write tests. In Australia, Java appears mainly at university, for example in UQ's CSSE2002 and Sydney's INFO1113, rather than in school syllabuses. Modern Age Coders runs these Java lessons live for Australians aged 13 to 67, as a small class or privately, starting with a free trial lesson.

Start here

Three Java courses, matched to where you are

One for teenagers, one for university students and adults, and one for the data structures every Java unit leans on. Each card opens the full syllabus.

JVAU / 01

Java for Teens

Beginner to advanced for ages 13 to 18: variables and loops first, then classes, collections and small projects.

Open the syllabus →

Java Course for College course thumbnail

JVAU / 02

Java Course for University and Adults

Core Java to Spring Boot: object-oriented design, generics, exceptions, testing and a working web service.

Open the syllabus →

Data Structures & Algorithms Course course thumbnail

JVAU / 03

Data Structures and Algorithms

Lists, trees, hash tables and graphs, with the complexity reasoning that second-year units expect.

Open the syllabus →

Where Java sits

Java in Australian schools and universities

Knowing where a language is actually used saves a lot of wasted effort. Java's home in Australia is the university software unit, not the school syllabus.

The Australian Curriculum asks Year 9 and 10 students to implement programs "including in an object-oriented programming language", but its own examples of suitable languages are Python, JavaScript and C#. Java is allowed, not named. Universities are different. Several name Java outright in their unit outlines, and others describe a language that, in practice, students meet as Java or something very close to it.

Where Java appears, read at each institution on 13 October 2026
Where	What the official page says	What it means for a learner
Australian Curriculum, Years 9 and 10	Students implement algorithms "including in an object-oriented programming language"; listed examples are Python, JavaScript or C#	Object-oriented ideas start at school; Java itself is optional
UQ, CSSE2002 Programming in the Large	Good practice "with specific application to file IO and GUIs in Java"	A full Java unit, one semester, 2 units
University of Sydney, INFO1113	LO8: "Demonstrate experience with common interfaces and collections in Java."	Collections are an explicit learning outcome
ANU, COMP1110	An "industrial-strength object-oriented programming language" and "lists, trees, hash tables, and graphs"	Hash tables appear in the first year
Monash, FIT2099	Students implement designs "using at least one" object-oriented language	Design comes first; the language serves it

What the outlines have in common

Every one of these units cares about classes that model real things, collections that hold them, and tests that prove the code works. Syntax is the easy part; the hard part is the set of rules a class must follow so that the rest of Java treats it correctly.

That is why our Java course spends more time on equality, interfaces and testing than on memorising keywords.

What we will not do

University assignments are the student's own work under each university's academic integrity rules. We teach the concepts behind an assignment with our own examples and never write, rewrite or debug assessed code.

Students who bring a unit outline get a plan built around its topics and its order.

Sources, read 13 October 2026: UQ CSSE2002; University of Sydney INFO1113; ANU COMP1110; Monash FIT2099; ACARA, Digital Technologies Years 7 to 10.

A worked example

The library that lent 119 books and counted 1,000

The Australian Curriculum gives a familiar exercise for object-oriented programming: a class for a book in a library system. We built one and ran it, because it hides the most common bug in Java collections.

ACARA's elaboration describes students "defining their own classes to model and define the actions that can be performed on data in their programs", with a book that stores an author, title and publisher. Our version keeps an ISBN and a title. We generated 1,000 loans spread across 120 titles with a fixed random seed (119 titles were borrowed at least once) and added a new Book object for each loan to a HashSet, expecting one entry per title. Then we changed one thing at a time.

Our run, Java 22.0.1, 1,000 loans of 120 titles (our calculation)
Version of the Book class	Set size	Lookups that found the book	equals() calls while adding
equals() compares ISBNs, hashCode() not written	1,000	0 of 120	0
equals() plus hashCode() that always returns 1	119	119 of 120	59,671
equals() plus hashCode() built from the ISBN	119	119 of 120	881
A record holding ISBN and title, looked up by ISBN with a blank title	119	0 of 120	not counted
No class at all: a set of ISBN strings	119	119 of 120	not needed

Why the first set grew to 1,000

A HashSet files each object under its hash code before it ever calls equals(). Without our own hashCode(), every new Book got the default identity hash, landed in a different place, and was never compared. The set called equals() zero times.

Why the list disagreed

An ArrayList searches by calling equals() on each element, so contains() found 119 of 120 titles in the very same data. Two collections gave opposite answers to one question, which is exactly how this bug hides in real projects.

Why "correct" can still be slow

A hash code of 1 for everything is legal and gives the right answer, but every insert compares against everything already stored: 59,671 calls instead of 881. Correctness and speed are separate tests.

The record surprise

Java records generate equals() and hashCode() for you, from every component. Our record held the ISBN and the title, so a lookup with the right ISBN and a blank title failed all 120 times. The record kept the contract perfectly; it simply defined "the same book" differently from the librarian.

The lesson is to decide what identity means before choosing how to write it.

When the simple baseline wins

If all a program needs is "which titles were borrowed and how often", a set or map keyed by the ISBN string is correct, shorter and needs no custom class: it reported 119 titles, with loan counts from 2 to 16.

A Book class earns its place only when books carry behaviour, such as due dates and holds. We teach students to try the plain version first and to say so when it is enough.

The run is ours, the seed is fixed (20261013) and the code is short enough for students to rebuild in one lesson. Changing the seed changes the loan counts, not the shape of the result.

The course

What a Java course covers, in order

The order matters more than the speed. Each stage depends on the one before, and the equality contract sits in the middle where students first need it.

Stages of our Java course
Stage	Topics	A typical exercise
1. Typed basics	Types, variables, loops, methods, arrays, reading compiler errors	A quiz scorer that rejects text where a number belongs
2. Classes and objects	Fields, constructors, encapsulation, references and the memory model	A step counter class, then two references to one object
3. Equality and collections	equals, hashCode, records, List, Set, Map, iteration	The library loans run above, rebuilt and extended
4. Interfaces and inheritance	Interfaces, abstract classes, polymorphism, when not to inherit	Shapes that share an area method without sharing code
5. Generics and exceptions	Type parameters, checked and unchecked exceptions, try-with-resources	A typed queue that refuses the wrong element type
6. Testing	JUnit tests, invariants, boundary cases, test-first fixes	Tests that would have caught the 1,000-book set
7. Files and beyond	File input and output, simple GUIs or a small web service	A loan log saved to disk and read back

Why testing comes early

A single test, "adding two equal books leaves the set at size one", fails instantly on the broken class. Students who write that test once tend to write it forever.

The University of Sydney outline lists testing and debugging object-oriented programs as outcomes in their own right, and so do we.

Which Java version

We teach a current long-term support release, so records and pattern matching are available. Students on a university machine with an older version are shown what changes and how to check.

Tools are free: an editor or IDE, a terminal and the Java development kit.

Java or Python

Should Java be your first language?

For most children, no. For some teenagers and many adults, it is a fine start. The honest answer depends on age, goals and patience with error messages.

Choosing a first text language
Situation	Our usual advice	Why
Primary school child	Scratch, then Python	Java's ceremony gets in the way of early ideas
Teen with some Python	Java next, for objects and types	Strong typing makes object-oriented design visible
Teen new to text coding	Either; Python is gentler	Both lead to the same concepts
University student in a Java unit	Java now, alongside the unit	Match the language the unit assesses
Adult aiming at enterprise or Android work	Java early	Large codebases and Android tooling use it heavily
Adult automating everyday tasks	Python first	Shorter scripts, faster payoff

Students who start with Python lose nothing. Our Python AI course for kids and the next step after Scratch cover the younger end. Teenagers choosing senior subjects can read our guide to Year 11 computing subjects.

Who joins

Three kinds of Java student

The same language, taught three ways.

Teenagers, 13 to 18

Usually after some Python or JavaScript. Projects are games, quizzes and small simulations, and the object-oriented ideas from Years 9 and 10 get real practice.

University students

Concept lessons running a week ahead of the unit: references, collections, interfaces and testing, with our own examples and never the assignment.

Adults, up to 67

Java for a job that uses it, a move towards Android, or a structured second language. Lessons fit around work, and the pace follows the person.

Progress

Four levels of Java skill

Weekly lessons usually reach the third level within two to three terms.

From first class to confident Java
Level	What you can do
1. Reader	Follow a short Java program and predict what it prints
2. Writer	Write classes with constructors, fields and methods that compile first time more often than not
3. Collector	Choose between List, Set and Map, and write equals and hashCode that agree
4. Tester	Prove a class works with JUnit tests, including the boundary cases

Is Java too hard for a 13 year old?

Not for one who already writes simple Python or JavaScript. The extra rules feel strict at first and then become a safety net.

Complete beginners at 13 are often happier starting with Python and moving to Java a term later.

Can adults with no coding start with Java?

Yes. Adults are usually patient with structure, and Java rewards that.

The first month goes slower than in Python; the second month often goes faster.

The catalogue

Java and related courses

Nine courses in three bands. Most Java learners take two of them, one after the other.

I

Java itself

Teens to adults

JVAU / JAV / 01

Java for Teens

Beginner to advanced, 13 to 18.

Open the syllabus

JVAU / JAV / 02

Java Course for University and Adults

Core Java to Spring Boot.

Open the syllabus

JVAU / JAV / 03

Kotlin and Android

The JVM language Android favours.

Open the syllabus

II

Thinking in structures

For Java units

JVAU / DSA / 01

Data Structures and Algorithms

Hash tables, trees, graphs.

Open the syllabus

JVAU / DSA / 02

Problem Solving for Teens

Logic and algorithms, 13 to 18.

Open the syllabus

JVAU / DSA / 03

Competitive Programming

Speed and correctness together.

Open the syllabus

III

Around the code

Habits that last

JVAU / ARD / 01

Git and GitHub for Students

Version control for team work.

Open the syllabus

JVAU / ARD / 02

MySQL and Database Design

Where Java data usually lives.

Open the syllabus

JVAU / ARD / 03

Python Masterclass

The second language, or the first.

Open the syllabus

How lessons run

When Java lessons happen

Our teachers work from India, whose day runs alongside the Australian afternoon and evening. We fix each lesson in the student's local state time and move it with daylight saving where that state uses it.

After school

Weekday lessons for teenagers.

Early evening

For university students and adults, by arrangement.

Weekend

Longer sessions for projects and testing.

Free first class

A short Java exercise and an honest view of the right starting stage.

Groups

Fifteen to twenty students reading each other's code.

One to one

For a unit, a job or a specific project.

Code by the student

Teachers guide; students type, run and explain.

Tests as standard

Every class a student writes gets at least one test.

Integrity first

We never write assessed university or school work.

Student work

Code our students have published

A few things our learners have shipped and left online for anyone to try. More sit in the student labs.

AI and ML

NutriLife

An AI nutrition coach that reads what you eat and works you toward a target.

by Bhavya · Open it

AI and ML

Misti

A chatbot that answers mathematics and programming questions, built and deployed by a student.

by Harshit · Open it

AI and ML

GuardianX

An assistant that helps a young person recognise unsafe situations online.

by Vivaan · Open it

Web app

SkyCast

A weather forecasting site with live conditions for any location.

by Krish

Fees

Fees for Java classes online

Java lessons are billed monthly in US dollars for learners in Australia. There is no enrolment charge, and a family or adult learner can leave at the end of any month.

Free first class

USD 0

no card required

A short Java exercise
Advice on the right starting stage
No card or bank details

Book it

Group batch

USD 100

a month, billed in US dollars

Fifteen to twenty students per class
Code reviews within the group
A regular teacher
Stop after any month

Start here

One to one

USD 150

a month, billed in US dollars

Lessons around one student's goals
Unit-aligned or work-aligned plans
Times around study and work

Enquire

What families say

Rated 4.9 across 547 Google reviews

Copied word for word from our public Google listing. We do not edit or select reviews to suit a topic.

★★★★★

"The one step solution for my son. Modern Age Coders make learning coding so simple that kids love it. The teachers explain complex concepts clearly with practical exercises and interactive content."

Ria Mukherjee

Parent

★★★★★

"Modern Age Coders has been a game-changer for me. I struggled to grasp IT concepts and coding before joining, but their classes transformed everything. I can now confidently write complex programs with ease."

Samriddha Mondal

Student

★★★★★

"One of the most wonderful education centres out there. Education is not limited to school syllabus but focuses on skill development."

Vansh Agarwal

Student

★★★★★

"My child Dhairya is really enjoying the Modern Age Coders classes. This is his first online class and he eagerly looks forward to it. I can already see his improvement, and the teachers are very cooperative."

Sonam Oswal

Parent of Dhairya

★★★★★

"Modern Age Coders have wonderful teachers who teach in a clear, easy and practical way. The teacher boosts students' confidence and inspires them to learn without hesitation."

Sonu Goyal

Parent

★★★★★

"I highly recommend this computer coding class! The teachers are incredibly knowledgeable and passionate about coding."

Ritu Kedia

Parent

Students and parents ask

Questions about Java classes online in Australia

What are Java classes online?

They are live lessons over video in which students learn the Java programming language, from types and classes to collections, exceptions and testing, writing and running their own code each lesson.

Is Java taught in Australian schools?

The Australian Curriculum asks Year 9 and 10 students to program in an object-oriented language, with Python, JavaScript or C# as its examples. Java is permitted but not named, so most students meet it at university.

Which Australian universities teach Java?

Among the pages we read, UQ's CSSE2002 applies its content to file input and output and GUIs in Java, and the University of Sydney's INFO1113 lists Java collections as a learning outcome.

What is the equals and hashCode contract?

Objects that are equal must return the same hash code. If a class overrides equals but not hashCode, hash-based collections such as HashSet treat equal objects as different, as our 1,000-book run showed.

Can you help with my university Java assignment?

We teach the concepts the assignment uses, with our own examples. We never write, rewrite or debug assessed work, and we follow each university's academic integrity rules.

What age can a student start Java?

Around 13 for a student who already writes some Python or JavaScript. Younger children usually do better with Scratch and then Python first.

Do I need to install anything?

A free Java development kit and an editor. We help set both up in the first lesson.

Is Java useful for Android apps?

Android development accepts Java, and Kotlin runs on the same platform. Our Kotlin and Android course follows on naturally.

What does it cost?

The first class is free and needs no card. Monthly group and one-to-one fees are shown in the fees section above.

Also on this site

Related pages

Other language guides and our wider Australian pages.

Coding classes in Australia

The national guide to every Australian page.

Coding languages for kids

Which language when, from Scratch upwards.

Year 11 computing subjects

Senior subject choices state by state.

One-on-one coding tutor

Private lessons around one learner.

Online coding tutor

What to check before booking.

Game programming course

Where many teens first meet objects.

Start here

Book a free first Java class

Leave a name and number and say roughly when a call suits. In the trial lesson the student writes and runs a little Java, and we finish by naming the stage that fits.

Want detail first? Read our teaching method or browse every course we run.

WhatsApp us · +91 91233 66161 · connect@modernagecoders.com

Messages are answered by our team in India, which is why the number starts with +91. We have no office in Australia; WhatsApp from an Australian mobile is usually the fastest route.

Want a class sooner? Book a priority demo

A priority demo is a full class of about 45 to 60 minutes. After the class the mentor sends a written skill report and a personal learning roadmap on WhatsApp. If you enrol, the demo fee is adjusted against your first month's fee. Share your demo Order ID with us on WhatsApp and we take it off.

Book a priority demo

Three Java courses, matched to where you are

Java for Teens

Java Course for University and Adults

Data Structures and Algorithms

Java in Australian schools and universities

What the outlines have in common

What we will not do

The library that lent 119 books and counted 1,000

Why the first set grew to 1,000

Why the list disagreed

Why "correct" can still be slow

The record surprise

When the simple baseline wins

What a Java course covers, in order

Why testing comes early

Which Java version

Should Java be your first language?

Three kinds of Java student

Teenagers, 13 to 18

University students

Adults, up to 67

Four levels of Java skill

Is Java too hard for a 13 year old?

Can adults with no coding start with Java?

Java and related courses

Java itself

Java for Teens

Java Course for University and Adults

Kotlin and Android

Thinking in structures

Data Structures and Algorithms

Problem Solving for Teens

Competitive Programming

Around the code

Git and GitHub for Students

MySQL and Database Design

Python Masterclass

When Java lessons happen

Free first class

Groups

One to one

Code by the student

Tests as standard

Integrity first

Code our students have published

NutriLife

Misti

GuardianX

SkyCast

Fees for Java classes online

Rated 4.9 across 547 Google reviews

Questions about Java classes online in Australia

What are Java classes online?

Is Java taught in Australian schools?

Which Australian universities teach Java?

What is the equals and hashCode contract?

Can you help with my university Java assignment?

What age can a student start Java?

Do I need to install anything?

Is Java useful for Android apps?

What does it cost?

Related pages

Coding classes in Australia

Coding languages for kids

Year 11 computing subjects

One-on-one coding tutor

Online coding tutor

Game programming course

Book a free first Java class

Want a class sooner? Book a priority demo

Keep exploring Modern Age Coders

Related courses and guides

Learn more

Free resources

From the blog

Start here