String url = "
https://www.w3schools.com/js/tryit.asp?filename=tryjs_alert";
public void invokeBrowser() {
try {
System.setProperty("webdriver.chrome.driver",
"D:\\Selenium Practice\\Suhali\\chromedriver_win32\\chromedriver.exe");
driver = new ChromeDriver();
driver.manage().deleteAllCookies();
driver.manage().window().maximize();
driver.manage().timeouts().pageLoadTimeout(5, TimeUnit.SECONDS);
driver.get("url");
driver.switchTo().frame("iframeResult");
driver.findElement(By.tagName("button")).click();
Alert alert = driver.switchTo().alert();
String alertmsg = alert.getText();
System.out.println("alert msg:" + alertmsg);
alert.accept();
driver.quit();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}}
public static void main(String[] args) {
AlertHandling ah = new AlertHandling();
ah.invokeBrowser();
}}