import org.openqa.selenium.Alert;// Simple Alert (OK only):
Alert simpleAlert = driver.switchTo().alert();
System.out.println("Alert text: " + simpleAlert.getText());
simpleAlert.accept();
// Confirm Dialog (OK / Cancel):
Alert confirmDialog = driver.switchTo().alert();
confirmDialog.dismiss(); // Clicks Cancel
// Prompt Dialog (Input + OK / Cancel):
Alert prompt = driver.switchTo().alert();
prompt.sendKeys("QA Confirmation");
prompt.accept();