Java Constructor

a constructor is a special method that is used to initialize objects when they are created.
It shares the same name as the class and does not have a return type, not even void
Purpose:
Constructors are used to set the initial state of an object by assigning values to its member variables.
Automatic Invocation:
Constructors are automatically called when an object of the class is created using the new keyword.
Default Constructor:
If you don't define any constructors in your class, Java provides a default constructor with no arguments that initializes the object's member variables to their default values.
Parameterized Constructor:
You can create constructors that take parameters to allow for customized object initialization.
Rules for Creating Java Constructor
There are following rules for defining a constructor:

Constructor name must be the same as its class name.
A Constructor must have no explicit return type.
A Java constructor cannot be abstract, static, final, and synchronized.

Comments

Step-by-Step: Launch Browser, Context, and Page in Playwright and Run Test and Configuration (JavaScript)

🎥 Setup Browser, Context, Page & Run Config Test Scripts with package.json & playwright.config.js Step-by-Step: Launch Browser, Context, and Page in Playwright and Run Test and Configuration (JavaScript) 1. Install Playwright You can install Playwright using the following command: npm init playwright@latest 2. Create a Basic Test Script Understand the core Playwright architecture: Element Description browser Controls the browser instance (like Chrome, Firefox, etc.) context Acts like a separate browser profile (cookies, localStorage are isolated) page A single browser tab where interaction happens 3. Run the Test npx playwright test example.spec.js Ways to Run TypeScript Tests Way Command Notes 🟢 Via npx npx playwright test Uses built-in TypeScript support 🟢 With s...

Understand browser, context, and page in Playwright

🎥 Playwright: Browser, Context & Page - Real-time Demo and Multi-User Testing . 🎯 Goal: Understand browser , context , and page in Playwright 🧠 1. What is a browser ? ✅ Definition: A browser in Playwright is a launched instance of a real browser (Chromium, Firefox, WebKit) that can be used for automated testing. ✅ Purpose: It starts and controls the browser process. It is the root of your test execution. Required to create contexts and pages . ✅ Code Example: ts Copy Edit import { chromium } from 'playwright' ; const browser = await chromium. launch ({ headless : false }); 🧠 2. What is a context (browser context)? ✅ Definition: A context is like a separate browser profile (or incognito tab) inside the browser. Each context is isolated — no cookies, local storage, or sessions are shared. ✅ Purpose: Simulates multiple users or sessions. Enables parallel and isolated testing. Allows setting user-specific prefer...

How to Maximize a Browser window using Playwright Java

Playwright itself does not have a direct maximize () method like some other browser automation tools, but you can achieve the effect by setting the viewport to the screen size of your display. Below are ways to handle Maximize a browser in Playwright Java Ø Setting the viewport to the screen size o setViewportSize(1920, 1080): This sets the browser window to a full HD resolution, effectively maximizing it. o setHeadless(false): Ensures the browser runs in a visible mode so you can see the window being maximized. Code Snapshot Playwright playwright = Playwright. create () ; Browser browser = playwright.chromium().launch(new BrowserType.LaunchOptions().setHeadless(false)); // Create a new browser context BrowserContext context = browser.newContext(new Browser.NewContextOptions() .setViewportSize(1920, 1080)); ...

QA Shastra Online Training

Search This Blog