Open a browser with maximum size

 1. Open Eclipse > Project > Package > Class 

2. Write Method

3. Add your Browser 

4. Write this Code:

     driver.manage().window().maximize();

driver.manage().deleteAllCookies();

and save it.

Example:

package PageTestPackage;

import org.openqa.selenium.By;

import org.openqa.selenium.WebDriver;

import org.openqa.selenium.chrome.ChromeDriver;

import org.testng.annotations.Test;

import io.github.bonigarcia.wdm.WebDriverManager;

public class OpenUrl {

@Test

public void eSchoolJourney () {

WebDriverManager.chromedriver().setup();

WebDriver driver=new ChromeDriver();

driver.manage().window().maximize();

driver.manage().deleteAllCookies();

driver.get("http://qa.user.student.ui.eschooljourney.com:3001");

System.out.println("Title : "+driver.getTitle());

System.out.println("Current URL "+driver.getCurrentUrl());

//System.out.print("PageSource : "+driver.getPageSource());

driver.findElement(By.id("username_input")).sendKeys("ronoitc"); // Enter username

driver.findElement(By.id("password_input")).sendKeys("Ronjititc@1234"); // Enter password

}

}