ChromeOptions :

• start-maximized: Opens Chrome in maximize mode
• incognito: Opens Chrome in incognito mode
• headless: Opens Chrome in headless mode
• disable-extensions: Disables existing extensions on Chrome browser
• disable-popup-blocking: Disables pop-ups displayed on Chrome browser
• make-default-browser: Makes Chrome default browser
• version: Prints chrome browser version
• disable-infobars: Prevents Chrome from displaying the notification 'Chrome is being controlled by automated software

ChromeOptions options = new ChromeOptions()
options.addArgument("start-maximized");
ChromeDriver driver = new ChromeDriver(options);

https://www.guru99.com/chrome-options-desiredcapabilities.html