How to handle alerts in Selenium with Java?

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The Actions class in Selenium is used to build and perform complex user interactions like mouse movements, keyboard events, drag-and-drop, and other advanced gestures that go beyond simple clicks or typing.

Handling alerts in Selenium with Java involves interacting with popup windows such as JavaScript alerts, confirmations, or prompts that appear during web automation. Here’s how you can manage them effectively:

1. Switch to Alert

Before interacting with an alert, switch the WebDriver’s context to the alert box using:

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Alert alert = driver.switchTo().alert();

2. Types of Alerts and Actions

Simple Alert: Just an OK button.

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alert.accept();  // Clicks OK

Confirmation Alert: OK and Cancel buttons.

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alert.dismiss();  // Clicks Cancel

// or

alert.accept();   // Clicks OK

Prompt Alert: Allows input text.

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alert.sendKeys("Your input");

alert.accept();

3. Get Alert Text

To read the message shown in the alert:

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String alertText = alert.getText();

System.out.println("Alert says: " + alertText);

4. Example Flow

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// Trigger action that causes alert

driver.findElement(By.id("alertButton")).click();

// Switch to alert

Alert alert = driver.switchTo().alert();

// Read alert text

System.out.println(alert.getText());

// Accept the alert

alert.accept();

5. Handling NoAlertPresentException

If no alert is present, Selenium throws NoAlertPresentException. Handle it with try-catch:

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try {

    Alert alert = driver.switchTo().alert();

    alert.accept();

} catch (NoAlertPresentException e) {

    System.out.println("No alert found.");

}

Summary

Use driver.switchTo().alert() to focus on the alert.

Use accept(), dismiss(), and sendKeys() to interact.

Always handle exceptions to avoid test failures.

Read More

What is WebDriver in Selenium with Java?

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