Java Programming Course
Our Java Programming course takes you from the basics to confident object-oriented code: syntax, data types and control flow, methods, arrays, classes and objects, inheritance, polymorphism and interfaces, exception handling, collections and generics, file handling and an introduction to testing with JUnit. Lessons are live and one-to-one with a verified programming tutor, who reviews your code and explains every fix. Suitable for computer science students, AP Computer Science A students and beginners.
Reviewed by A. Shinde, Computer science and full-stack development specialistLast updated
$13 – $33
per hour
Free demo class · pay only if you continue
What you will learn
Learning outcomes
- Understand Java programming fundamentals
- Set up the Java development environment
- Understand Java syntax
- Work with variables and data types
- Use operators and expressions
- Apply conditional statements
- Use loops effectively
- Work with arrays
- Create and use methods
- Understand classes and objects
- Apply encapsulation
- Understand inheritance
- Apply polymorphism
- Understand abstraction
- Work with interfaces
- Use constructors
- Understand method overloading and overriding
- Handle exceptions
- Work with Java collections
- Use ArrayList and other collections
- Understand strings and string manipulation
- Perform file handling
- Debug Java programs
- Apply object-oriented programming principles
- Write reusable Java code
- Solve programming problems
- Build Java applications
Prerequisites
- Basic computer skills
- Basic programming concepts helpful but not required
- Basic mathematics
- Logical thinking
- Problem-solving skills
Tags
Course structure
Syllabus(8 modules)
- Introduction to Java
- JDK JRE and JVM
- Program structure
- Compiling and running
- Variables and data types
What is Java Programming?
In short: this course gives one-to-one online tutoring in Java programming. A verified tutor teaches syntax, object-oriented programming, collections, exceptions, streams and multithreading, and reviews and debugs your own code.
Java is a widely used, object-oriented programming language that runs on the Java Virtual Machine (JVM), so the same compiled code runs on any platform. It is used for enterprise software, Android apps and back-end systems, and is the teaching language for many university programming modules.
This online course teaches Java Programming one to one with a verified tutor who has studied or taught it at university level, at your pace and aligned with your own module.
Related subject: Java help.
What does the Java Programming course cover?
| Topic | Key content |
|---|---|
| Java fundamentals | JDK, JRE and JVM, program structure, compiling and running, variables and data types |
| Operators and control flow | Operators, Scanner input, if, switch, loops, break and continue |
| Arrays and strings | One- and multi-dimensional arrays, String, StringBuilder |
| Methods and classes | Methods, overloading, classes and objects, constructors, encapsulation, inheritance |
| Polymorphism and abstraction | Overriding, dynamic dispatch, abstract classes, interfaces, packages and access control |
| Exceptions | Checked and unchecked exceptions, try-catch-finally, custom exceptions |
| Collections | ArrayList, LinkedList, HashMap, HashSet, iterators, generics |
| Files, lambdas and streams | File I/O, functional interfaces, lambda expressions, Stream API |
| Multithreading | Threads, Runnable, synchronisation, executor framework |
| Debugging and best practice | Debugging, coding conventions, testing basics |
Which Java collection should you use?
| Need | Collection | Note |
|---|---|---|
| Ordered list with fast index access | ArrayList | Most common choice |
| Frequent insertion and removal at ends | LinkedList or ArrayDeque | ArrayDeque is usually faster |
| Unique items, fast lookup | HashSet | No guaranteed order |
| Key-value pairs, fast lookup | HashMap | No guaranteed order |
| Sorted keys | TreeMap | O(log n) operations |
| Priority ordering | PriorityQueue | Min-heap by default |
How do you debug a Java program?
- Read the exception message and stack trace from the top line in your code.
- Reproduce the bug with the smallest input.
- Use breakpoints and step through in your IDE.
- Inspect variable values at each step.
- Fix one thing at a time and re-test.
- Add a test so the bug doesn't return.
What does a worked Java problem look like?
Here is a typical task: count how many times each word appears in a list.
| Step | Java approach |
|---|---|
| Create a map | Map<String, Integer> counts = new HashMap<>(); |
| Loop over words | for (String w : words) |
| Update the count | counts.merge(w, 1, Integer::sum); |
| Result | Each word maps to its frequency |
Where do students lose marks in Java Programming?
Students most often lose marks in Java Programming through the habits below. Each is easy to fix with practice and feedback on your own code.
| Mark-loser | What to do instead |
|---|---|
| NullPointerExceptions | Check for null and initialise objects |
| Comparing strings with == | Use .equals() for string content |
| Off-by-one loop errors | Check loop bounds against array length |
| Unhandled exceptions | Catch or declare checked exceptions |
| Poor class design | Keep fields private and methods focused |
How is it assessed, and how can a tutor help?
Java modules are usually assessed by programming assignments, lab tests and a practical or written exam on concepts and code.
Tutors explain concepts, work through practice problems with you and give feedback on your approach. Graded work you submit must be your own, as set out in our academic integrity policy. For deadline-driven guidance, see assignment help.
How the lessons work
Lessons are live and one to one on video with screen sharing and a shared whiteboard. You can follow a full course or book sessions on the topics you find hardest before exams. See also Object-Oriented Programming, Data Structures and Algorithms and our Java subject page.
Java tutor online: who this course is for, prerequisites and study plan
A Java tutor online teaches you through live 1-to-1 lessons where you write and debug real code together, from your first program to collections, streams and multithreading.
This Java programming course suits complete beginners, university students taking a Java or object-oriented programming module, and developers preparing for coding interviews in Java.
Prerequisites: basic computer skills and logical thinking. Earlier programming experience helps but is not required, because the course starts from Java fundamentals.
Course length: 40 one-hour lessons across 8 modules.
| Stage | Modules | What you can do afterwards |
|---|---|---|
| 1 | Java fundamentals, operators, input, output and control flow | Write and run small console programs |
| 2 | Arrays, strings, methods | Solve array and string problems with clean methods |
| 3 | Classes, inheritance, polymorphism, packages, exceptions | Design small object-oriented programs that handle errors |
| 4 | Collections, files, lambdas, multithreading, debugging | Use ArrayList and HashMap, read files, write streams and debug confidently |
Where it leads: continue with Data Structures and Algorithms for interviews, or Object-Oriented Analysis and Design for software design.
Java Programming Course: frequently asked questions
Is Java good for beginners?
Yes. Its clear structure and strong typing make it a solid first language.
What is the difference between the JDK, JRE and JVM?
The JVM runs bytecode, the JRE adds the libraries needed to run programs, and the JDK adds tools for developing them.
What are Java streams?
An API for processing collections with operations such as filter, map and reduce.
What is the difference between an ArrayList and an array?
Arrays have a fixed size; ArrayLists grow dynamically.
What is multithreading in Java?
Running several threads at once, using Thread, Runnable or the executor framework.
Which IDE should I use?
IntelliJ IDEA, Eclipse or VS Code are all common.
Is Java hard to learn?
Java is a moderate first language. Its syntax is stricter and more verbose than Python, so beginners write more code to start, but the strict typing catches many mistakes early. Most students find object-oriented design, generics and multithreading the hardest parts, so your tutor introduces them step by step with small programs.
Can you help me prepare for a Java exam?
Yes. Tutors practise code tracing and writing under time limits.
How much does a Java tutor cost?
The price depends on the tutor and session length. You see the hourly rate before booking, with no subscription.
Can a tutor do my assignment for me?
No. Tutors explain, guide and give feedback so you can complete your own work, in line with our academic integrity policy.
Why use .equals() instead of == for strings?
== compares references; .equals() compares the characters.
What is a HashMap?
A collection that stores key-value pairs with fast average lookup.
What is the difference between checked and unchecked exceptions?
Checked exceptions must be caught or declared; unchecked ones extend RuntimeException.
What is an interface in Java?
A contract of methods that classes implement.
How do I fix a NullPointerException?
Find the null reference in the stack trace and make sure it is initialised before use.
What is garbage collection?
Automatic memory management that frees objects no longer referenced.
What does static mean?
A static member belongs to the class rather than to any object.
How long does it take to learn Java?
With a few hours of practice each week, most beginners learn core Java, including variables, loops, methods and basic classes, in two to three months. Becoming confident with collections, exceptions, streams and larger object-oriented programs usually takes several more months of regular coding. Your tutor sets weekly practice so you keep progressing.
What is Java programming used for?
Java is used to build Android apps, large business and banking systems, web back ends with frameworks such as Spring, and tools for big data. It is also a common first language in university programming courses because it teaches object-oriented design clearly. Your tutor connects each Java topic to your coursework and exams.
Do you offer lessons in my time zone?
Yes. Lessons are online, so you can book times that suit your time zone.
How can a Java tutor help me?
A Java tutor explains concepts at your pace, watches you write code on a shared screen and shows you how to find your own bugs. Lessons can follow your university module, your interview preparation or a project. You finish each lesson with practice tasks, and your tutor reviews them next time.
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