Java Tutorial: Learn Java Programming from Beginners to Advanced

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Welcome to the Java tutorial series by Techlistic. This tutorial covers Java fundamentals step by step, starting from basic syntax to advanced object-oriented and core Java concepts. Each topic includes clear explanations, examples, and practical use cases.

📘 Java Tutorial – Table of Contents

0. Introduction to Java

Overview and History of Java
Features of Java
Advantages of Java
JDK vs JRE vs JVM
Java IDEs and Editors
Installing Java & Setup

1. Java Variables

Local Variables
Instance Variables
Static Variables

2. Java Data Types

Primitive Data Types
Non-Primitive Data Types
Type Casting

3. Java Modifiers

Access Modifiers
Non-Access Modifiers

4. Java Operators

Arithmetic Operators
Logical & Relational Operators
Bitwise & Unary Operators

5. Java Class & Object

Java Class
Hello World Program
Java Object
Constructors

6. Java Methods

Main Method
Types of Methods
Method Parameters & Return Types

7. Conditional Statements

If / Else / Switch

8. Loops & Control Statements

For, While, Do-While
Break & Continue

9. OOPS Concepts

Inheritance
Encapsulation
Abstraction
Polymorphism

10. Java Regex

Java Regular Expressions
Date Validation using Regex

11. Advanced Java Topics

Singleton Design Pattern
Collections Framework
Exception Handling
Multithreading
JDBC
Reflection & Inner Classes

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Mastering Selenium Practice: Automating Web Tables with Demo Examples

1. Introduction Automating web tables using Selenium WebDriver is one of the most essential and frequently asked skills in automation testing interviews and real-world QA projects. From dashboards and admin panels to reports and data grids, web tables are everywhere — and handling them dynamically is a must for Selenium testers. In this tutorial, you’ll learn how to automate static and dynamic web tables in Selenium using real demo examples , including row and column traversal, dynamic XPath creation, and data validation techniques. Whether you’re preparing for interviews or working on enterprise UI automation, this guide will help you master Selenium web table automation with practical, reusable code examples . Table of Content 1. What is Web Table? Types of Web Table Static Table Dynamic Table 2. Automate Reading data from Static Web Table with Selenium Practice Exercises for automating Static Table Solution Code for Static Table Code Explanation 3. Automate Handling Dynamic Web Ta...

Looking for safe and free dummy sites for testing your Selenium WebDriver automation skills? In this updated guide, we’ve curated the best demo websites where you can practice automation confidently, build portfolio-ready projects, and simulate real-world testing scenarios without touching live systems. Testing on production applications can be risky, which is why dummy sites for testing are ideal for learning Selenium, Cypress, and other automation tools. This post features free, reliable demo websites across multiple complexity levels, allowing you to practice UI automation, functional validation, and even performance testing in a secure, controlled environment. Why Practice Selenium on Demo Websites? Before working on live applications, mastering automation on demo websites helps you: Learn risk-free : Experiment without breaking production systems Simulate real-world scenarios : From simple forms to complex e-commerce checkouts Build portfolio projects : Demonstrate skills...

File upload and download automation is a common requirement in web testing. Whether you’re testing a profile picture upload, document submission form, or any file-upload feature, Selenium WebDriver can handle it reliably with the right approach. In this tutorial, you’ll learn: How file upload/download works in Selenium Different upload techniques (sendKeys, Robot class, AutoIt) Cross-browser examples in Java & Python Handling edge cases & best practices Why File Upload Automation Is Challenging Selenium WebDriver operates only within the browser’s DOM. However, most file upload dialogues are OS-level windows outside the browser scope...

Automating e-commerce websites using Selenium WebDriver is a critical skill for modern QA engineers and test automation professionals. E-commerce platforms involve complex user journeys such as product search, dynamic filtering, cart management, checkout flows, and payment gateway integrations, all of which require reliable end-to-end automation testing. In this tutorial, you will learn how to automate real-world e-commerce scenarios using Selenium WebDriver with practical examples, covering user registration, login validation, product selection, shopping cart operations, and checkout automation. By the end of this guide, you’ll understand how to build stable, scalable Selenium test scripts for e-commerce applications and apply best practices to handle dynamic elements, waits, and real-time user interactions. Table of Contents Why Automate E-commerce Testing? Key Challenges in E-commerce Testing Prerequisites for Automation Test Scenarios for E-commer...

Boost Your Automation Skills with Practical Selenium Exercises Looking to build real, hands-on experience with Selenium? This curated set of practical automation exercises helps you master Selenium WebDriver by working through realistic testing scenarios. Each assignment mirrors challenges faced in professional QA environments, helping you move beyond theory and develop job-ready automation skills. Why These Exercises Matter Career-ready skills : Learn automation techniques used in top tech firms Progressive difficulty : From beginner forms to advanced e-commerce workflows Complete solutions : Reference code for all exercises included Skill validation : Test your knowledge against industry standards Top Selenium Practice Projects E-Commerce Website Automation with Selenium (Amazon-like) In this self-learning project, you will automate key e-commerce workflows using Selenium and Java. The assignment covers end-to-end scenarios such as user sign-up and login, product search, and completi...

Introduction Building an app used to mean one thing: learning how to code. That’s no longer true. In 2026, you can build fully functional AI apps without writing a single line of code. Tools have evolved to the point where anyone with an idea can turn it into something real. This shift is important. It means: You don’t need technical skills to start You can test ideas quickly You can build and launch in days instead of months Whether you want to create a side project, start a business, or simply learn something new, building your first AI app is one of the most valuable skills you can develop right now. This guide walks you through the entire process, step by step. 1. Understand What an AI App Actually Is Before building anything, you need clarity. An AI app is simply an application that uses artificial intelligence to perform tasks like: Generating text Answering questions Creating images Automating workflows It doesn’t need to be complex. Exampl...

Introduction This ultimate guide explains every essential Selenium WebDriver command with detailed technical explanations and practical Java examples. Whether you're writing your first test script or optimizing an existing framework, understanding these commands is crucial for effective test automation. Table of Contents Browser Initialization Commands Browser Window Commands Navigation Commands Element Location Commands Element Interaction Commands Dropdown Handling Commands Advanced Utility Commands 1. Browser Initialization Commands System.setProperty() java System . setProperty ( "webdriver.chrome.driver" , "path/to/chromedriver" ) ; Explanation: Sets the system property to specify the path to the browser driver executable Required before creating a WebDriver instance Must match your browser version (e.g., ChromeDriver for Chrome) Path can be absolute or relative to project WebDriver Initialization java WebDriver driver = new ChromeDriver ( ) ; Explana...

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Playwright has rapidly become the go-to automation testing framework for modern web applications. When combined with a well-designed Page Object Model (POM), Playwright delivers fast, reliable, and highly maintainable test suites that scale effortlessly. In this guide, you will learn Playwright POM best practices, complete with real code examples and advanced features like parallel execution, cross-browser testing, retries, tagging, and HTML reports. This article is written for SDETs, QA engineers, and test automation leads who want production-grade Playwright automation. What Is Page Object Model (POM) in Playwright? The Page Object Model is a design pattern where each application page (or component) is represented as a class. This class encapsulates: Locators Page actions Page-specific assertions Instead of scattering selectors across tests, POM centralizes UI knowledge, making tests easier to read and maintain. Why POM + Playwright works so well: Playwright locators are resilient a...

This comprehensive Python Behave tutorial teaches you Behavior-Driven Development (BDD) step by step using real examples. You’ll learn how to write Gherkin feature files, implement step definitions in Python, structure a Behave project, and run automated tests — preparing you for real-world test automation using BDD. Table of Content 1. What is BDD? 2. What is Gherkin Language in BDD? 3. What is Behave in Python? 4. Installing and Setup Behave 5. Project Structure for Behave Python (BDD) 6. Feature Files, Step Functions and Other Files in Behave Feature File Step Functions Step Parameters Passing String Param from Feature File Passing Integer Param from Feature File environment.py file behave.ini file 7. Run Feature files in Behave Run a single feature file Run multiple feature files Generate JUNIT xml reports with behave Run feature files with Python suite file Upcoming Tutorials: 8. API Automation Testing with BDD Python (Behave) 9. Selenium Automation with BDD Python (Behave) 1. Wha...

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