Grade calculator
Read marks with Scanner, store them in an array, work out the average and grade, and print a neat report.
Practises
- Arrays
- Loops
- Methods
Online Java course: from your first class file to objects and collections
Java is the first language in many university programming and OOP courses, and it runs Android apps and a great deal of server software. You learn it step by step, live and one-to-one: you write and run every program yourself in the IDE your course uses, and the tutor helps you read each error.
Book a free trial class in the Java courseAsk on WhatsApp about Java Programming (opens in a new tab)
- First 30-minute class free
- Live, one-to-one, online
- Female tutors on request
- Reply within 24 hours
The Java course at a glance
Short answers to the questions students and parents ask first. Each one is explained in more detail further down the page.
What is Java used for?
Java is used for Android apps, server and business software, and large back-end systems. Many universities also use it to teach programming and object-oriented programming.
Who should learn Java?
University and college students whose course uses Java, beginners who want a structured first language, and students preparing for OOP or data structures in Java. It also helps people who already use Java at work.
What do I need before I start?
No programming experience is required, though some experience in any language helps. You need a laptop or desktop with a JDK and an IDE; the tutor helps you install them.
Which topics does the course cover?
Java fundamentals, variables and data types, conditions and loops, methods and arrays, classes and objects, object-oriented programming, and collections, exceptions and files.
How are the classes delivered?
Live and one-to-one on Microsoft Teams or Zoom. You share your screen and write and run the code yourself, in the IDE your course uses, while the tutor explains and helps you debug.
How can I start learning Java?
Book the free 30-minute introductory class with the form on this page or on WhatsApp. We reply within 24 hours. Bring your course outline if you have one, and the tutor suggests where to begin.
Who should take this Java course?
- University students whose programming or OOP course uses Java
- College and school students whose Computer Science course uses Java
- Beginners who want a structured, strongly typed first language
- Python or C++ programmers who need Java for a course
- Students getting ready for data structures and algorithms in Java
- Working developers and professionals who need help with Java on the job
Where students often get stuck
- Long error messages and stack traces that are hard to read
- Why everything has to live inside a class
- static, public and void, and when each is needed
- The difference between == and equals() for strings
- NullPointerException and where it really comes from
Prerequisites
- No programming experience is required. Some experience in any language makes the early topics quicker.
- Comfortable using a computer, including saving files in folders.
- A Java Development Kit (JDK) and the IDE your course uses. The tutor helps you install them in the first lesson.
What you need for lessons
- A laptop or desktop computer. A phone or tablet is not enough for writing code.
- A stable internet connection and Microsoft Teams or Zoom.
- A quiet place where you can share your screen and talk with the tutor.
Java course syllabus
The topics in the order they are usually taught. The tutor adjusts the order and depth to your level, and to your school or university syllabus if you share it.
Java fundamentals
- Writing, compiling and running a program
- The main method, classes and source files
- Printing output and reading input with Scanner
- Reading compiler errors and stack traces
Variables and data types
- int, double, char, boolean and String
- Declaring variables; final constants and var
- Integer division, casting and type conversion
- Operators, precedence and the Math class
Conditions and loops
- if, else if, else and switch
- while, do-while and for loops
- The enhanced for loop
- Nested loops, break and continue
Methods and arrays
- Writing static methods with parameters and return values
- Method overloading and recursion
- One- and two-dimensional arrays
- Strings and their methods; comparing with equals()
Classes and objects
- Fields, constructors and methods
- private fields with getters and setters
- this, static members and object references
- Packages and imports
Object-oriented programming
- Inheritance with extends, and super
- Method overriding and polymorphism
- Abstract classes and interfaces
- toString(), equals() and the Object class
Collections, exceptions and files
- ArrayList and HashMap, and when to use each
- Generics in collections: ArrayList<String>
- try, catch, finally and throwing exceptions
- Reading and writing text files
- Exercise sets in the style of university lab tasks
A practical way to learn
- Run it after every step
- You compile and run after a few lines at a time, so each error is about code you have just written and is easier to understand.
- Draw the objects
- Before writing class code, you sketch the objects and the references between them with the tutor, then check the program behaves like the drawing.
- Your IDE, your course
- Lessons use the IDE your course uses, such as IntelliJ IDEA, Eclipse, NetBeans or BlueJ, and follow your course outline if you share it.
- Practice in the shape of lab tasks
- Many exercises read like university lab questions: understand the problem, plan the classes, write them, then test with your own inputs.
Practice exercises and projects
Typical exercises from lessons, from first loops to programs built from several classes. The tutor chooses them to match your level and your course.
Library system
Book and Member classes, with borrowing and returning, kept in an ArrayList and searched by title.
Practises
- Classes
- ArrayList
- Encapsulation
Shapes and areas
An abstract Shape with Circle and Rectangle subclasses, each working out its own area, stored in one list.
Practises
- Inheritance
- Abstract classes
- Polymorphism
Word counter
Read a text file, count each word with a HashMap, and handle a missing file with an exception.
Practises
- HashMap
- File input
- Exceptions
Your assignments stay your own
The tutor explains, reviews your code and helps you find bugs, but does not write graded assignments or lab tasks for you.
What you can expect to learn
- Write, compile and run Java programs, and fix compiler errors yourself
- Use methods, arrays and Strings to process data
- Design classes with constructors, private fields and inheritance
- Use interfaces and polymorphism where your course asks for them
- Store and look up data with ArrayList and HashMap
- Handle errors with exceptions and read stack traces
These are the aims of the lessons. Progress depends on where you start and how much you practise, and we never promise grades or results.
Suitable learning levels
Java suits every level, from complete beginners to people who use it at work. It asks for a little more structure than Python at the start, so the pace depends on where you begin.
Level: Beginner
Java as your first language
You have not programmed before. You start with a first program and build up slowly, with plenty of practice on each topic.
Level: Beginner to intermediate
Java as your second language
You know some Python, C++ or another language. Lessons move faster through the basics and spend more time on classes, references and collections.
Level: Intermediate
Support during a university course
Your course has reached classes, inheritance or collections. The free class finds the gaps, and lessons start from there.
Level: Working professionals
Help with Java at work
You already work and need help with Java on the job: a feature, a bug, code you have to understand or a topic you never studied. Lessons work on the problems you bring, using examples or code you are allowed to share.
Where to go next
Java leads naturally into the Computer Science courses that university programmes build on it.
Object-Oriented Programming
Design with classes, inheritance and interfaces, and draw UML before you code.
Data Structures and Algorithms
Complexity, trees, graphs and algorithms, often taught in Java.
C++ Programming
See how memory and pointers work underneath, in C and C++.
Programming Courses
Compare Java with Python, JavaScript and the other programming courses.
Your Java tutor
Java classes are taught by the programming tutors below. Each profile is published with the tutor’s consent. When you get in touch, we suggest a tutor who suits your level, your course and your timetable.
Ali Sher Abbasi
Tutor at My Subject Hub
- BS (Computer Science)
- DSA certification
- Teaching experience
- 5 years
- Teaching languages
- English and Urdu
- Computer science and programming
- Programming Fundamentals
- C and C++
- Java
- JavaScript and Web Development
- Object-Oriented Programming
- Data Structures and Algorithms
- Advanced Computer Science
- Cybersecurity Fundamentals
- FYP Mentoring
- School and college subjects
- Mathematics
- Science, Physics, Chemistry and Biology
- English
- Urdu
- Teaching approach
- Friendly and patient. Daily tasks and assignments, with quizzes to check progress, and we move to the next topic only when the previous one is crystal clear.
- Curricula and boards
- All curricula and boards
- Online availability
- Any time that suits the student
Course fee
Python, JavaScript, C++, Java and C. One flat monthly fee per course, whatever the number of classes a week.
- International
- $60a month
- Saudi Arabia
- SAR 180a monthIncludes the 20% discount for students in Saudi Arabia
Object-Oriented Programming, Data Structures and Algorithms and Cybersecurity use the monthly plans, like academic subjects.
See all fees and plansQuestions · 8
Java course questions
The questions students and parents ask us most, filed where you can find them. Pull a card to read it.
Can Java be my first programming language?
Yes. Many universities teach Java first. It asks for a little more structure than Python at the start, such as classes and types, but the tutor explains each piece as it appears.
Is Java the same as JavaScript?
No. They are different languages with similar names. Java is compiled and strongly typed, and is common in university courses, Android and server software. JavaScript runs web pages in the browser.
Which IDE will I use?
Whichever your course uses, such as IntelliJ IDEA, Eclipse, NetBeans or BlueJ. If you have no requirement, the tutor helps you install a free JDK and IDE in the first lesson.
Will this course help with my OOP course?
Yes. The later topics cover classes, inheritance, interfaces and polymorphism in Java. Our separate Object-Oriented Programming course then goes further into design and UML.
Do you teach Android development?
This course teaches the Java language, which Android apps are built on. For a mobile app in your project or course, tell us what you are building and we confirm what the tutor can cover. For cross-platform apps we teach React Native on the JavaScript course.
How long does it take to learn Java?
There is no fixed length. It depends on where you start, how many lessons you take each week and what your course requires. The tutor suggests a plan after the free class. The fee is $60 a month (SAR 180 in Saudi Arabia), whatever the number of classes a week.
Can you help if I already use Java at work?
Yes. The course covers every level, from complete beginners to people who already work with Java. Bring the problem you are stuck on: a bug, a feature, code you have to understand or a topic you never studied. Use examples or code you are allowed to share, and the tutor works through it with you.
Can I ask for a female tutor?
Yes. Female tutors are available on request, and so are male tutors. Tell us your preference when you get in touch, and we confirm a matching tutor before the free class.
Not in the drawer? Send us your question and we reply within 24 hours.
Ask usBook a free introductory Java class
Meet the tutor, write and run a short Java program together, and agree where to start. Fill in the form and we will arrange a time.
What happens next
- We reply within 24 hours, on WhatsApp or by email.
- You agree a time for the free 30-minute class with the tutor.
- In the class the tutor checks your level, you write a little code together, and you get a suggested starting point.
- There is no obligation to continue after the free class.
Prefer WhatsApp? Message us about Java Programming (opens in a new tab)
Can’t use WhatsApp? Call +92 317 5700456 or email info@mysubjecthub.com.