Checkbox handling in Selenium Java - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to find a checkbox by its ID.

Selenium Java

WebElement checkbox = driver.findElement(By.[1]("subscribeCheckbox"));

Drag options to blanks, or click blank then click option'

Aid

BclassName

Cname

DtagName

Attempts:

3 left

💡 Hint

Common Mistakes

Using By.name or By.className when the element has a unique ID.

Using By.tagName which selects by tag, not ID.

We use By.id to locate an element by its unique ID attribute.

2fill in blank

medium

Complete the code to check if the checkbox is selected.

Selenium Java

boolean isChecked = checkbox.[1]();

Drag options to blanks, or click blank then click option'

AisSelected

BisDisplayed

CisEnabled

DisChecked

Attempts:

3 left

💡 Hint

Common Mistakes

Using isDisplayed() which checks visibility, not selection.

Using isEnabled() which checks if the element is enabled.

The isSelected() method returns true if the checkbox is checked.

3fill in blank

hard

Fix the error in the code to click the checkbox only if it is not already selected.

Selenium Java

if (!checkbox.[1]()) {
    checkbox.click();
}

Drag options to blanks, or click blank then click option'

AisDisplayed

BisChecked

CisSelected

DisEnabled

Attempts:

3 left

💡 Hint

Common Mistakes

Using isDisplayed() which checks visibility, not selection.

Using isEnabled() which checks if the element is enabled.

We use isSelected() to check if the checkbox is already checked before clicking.

4fill in blank

hard

Fill both blanks to find a checkbox by its name and click it if it is not selected.

Selenium Java

WebElement checkbox = driver.findElement(By.[1]("agreeTerms"));
if (!checkbox.[2]()) {
    checkbox.click();
}

Drag options to blanks, or click blank then click option'

Aname

BisSelected

Cid

DisEnabled

Attempts:

3 left

💡 Hint

Common Mistakes

Using id instead of name when the element is identified by name.

Using isEnabled() instead of isSelected() to check selection.

We find the checkbox by its name attribute and check if it is selected before clicking.

5fill in blank

hard

Fill all three blanks to find a checkbox by CSS selector, verify it is enabled, and then click it if not selected.

Selenium Java

WebElement checkbox = driver.findElement(By.[1]("input[type='checkbox'][name='newsletter']"));
if (checkbox.[2]() && !checkbox.[3]()) {
    checkbox.click();
}

Drag options to blanks, or click blank then click option'

AcssSelector

BisEnabled

CisSelected

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Using id instead of cssSelector for complex selectors.

Checking isSelected() before isEnabled() which may cause errors.

Using wrong method names like isChecked() which does not exist.

We use cssSelector to find the checkbox, check if it is enabled and not selected before clicking.

Practice

1. What does the isSelected() method do when working with checkboxes in Selenium Java?

easy

A. It unchecks the checkbox if it is selected.

B. It clicks the checkbox to select it.

C. It finds the checkbox element on the page.

D. It checks if the checkbox is currently selected or not.

Solution

1. Step 1: Understand the purpose of isSelected()

   This method returns a boolean indicating if the checkbox is checked (true) or unchecked (false).

2. Step 2: Differentiate from other actions

   Clicking changes state, finding locates elements, but isSelected() only checks state.

3. Final Answer:

   It checks if the checkbox is currently selected or not. -> Option D

4. Quick Check:

   Check state = isSelected() [OK]

Hint: Remember: isSelected() only checks checkbox state [OK]

Common Mistakes:

• Confusing isSelected() with click()
• Thinking isSelected() changes checkbox state
• Using isSelected() to find elements

2. Which of the following is the correct way to click a checkbox located by its ID "subscribe" in Selenium Java?

easy

A. driver.click(By.id("subscribe"));

B. driver.findElement(By.name("subscribe")).click();

C. driver.findElement(By.id("subscribe")).click();

D. driver.findElement(By.id("subscribe")).select();

Solution

1. Step 1: Identify correct method to find element by ID

   Use driver.findElement(By.id("subscribe")) to locate the checkbox by its ID.

2. Step 2: Use correct method to click checkbox

   Use .click() on the found element to toggle checkbox state.

3. Final Answer:

   driver.findElement(By.id("subscribe")).click(); -> Option C

4. Quick Check:

   Find by ID + click() = driver.findElement(By.id("subscribe")).click(); [OK]

Hint: Use findElement(By.id()).click() to toggle checkbox [OK]

Common Mistakes:

• Using driver.click() directly
• Using wrong locator like By.name instead of By.id
• Using non-existent select() method

3. Consider this code snippet:

WebElement checkbox = driver.findElement(By.id("agree"));
if (!checkbox.isSelected()) {
    checkbox.click();
}
System.out.println(checkbox.isSelected());

What will be printed if the checkbox was initially unchecked?

medium

A. false

B. true

C. null

D. Throws exception

Solution

1. Step 1: Check initial checkbox state

   The checkbox is initially unchecked, so isSelected() returns false.

2. Step 2: Click checkbox if not selected

   Since it is not selected, checkbox.click() runs, selecting it.

3. Step 3: Print final state

   After clicking, isSelected() returns true, so true is printed.

4. Final Answer:

   true -> Option B

5. Quick Check:

   Unchecked + click = selected = true [OK]

Hint: Click only if not selected to ensure checkbox is checked [OK]

Common Mistakes:

• Assuming initial state remains unchanged
• Expecting false after click
• Confusing isSelected() return values

4. You wrote this code to select a checkbox:

WebElement cb = driver.findElement(By.id("option1"));
if (cb.isSelected()) {
    cb.click();
}

But the checkbox remains unselected after running. What is the error?

medium

A. The condition should check if checkbox is NOT selected before clicking.

B. You should use cb.select() instead of cb.click().

C. The locator By.id("option1") is incorrect.

D. You need to use cb.isEnabled() before clicking.

Solution

1. Step 1: Analyze the condition logic

   The code clicks the checkbox only if it is already selected, which unchecks it.

2. Step 2: Understand desired action

   To select the checkbox, click it only if it is NOT selected.

3. Step 3: Correct the condition

   Change condition to if (!cb.isSelected()) { cb.click(); } to select checkbox.

4. Final Answer:

   The condition should check if checkbox is NOT selected before clicking. -> Option A

5. Quick Check:

   Click only if not selected to select [OK]

Hint: Click checkbox only if it is not selected [OK]

Common Mistakes:

• Clicking checkbox when already selected
• Using non-existent select() method
• Ignoring checkbox state before clicking

5. You want to ensure a checkbox with ID "terms" is selected before submitting a form. Which code snippet correctly handles this and avoids unnecessary clicks?

hard

A. WebElement cb = driver.findElement(By.id("terms"));
if (!cb.isSelected()) {
cb.click();
}
// proceed to submit

B. WebElement cb = driver.findElement(By.id("terms"));
cb.click();
// proceed to submit

C. WebElement cb = driver.findElement(By.id("terms"));
if (cb.isSelected()) {
cb.click();
}
// proceed to submit

D. WebElement cb = driver.findElement(By.id("terms"));
cb.isSelected();
// proceed to submit

Solution

1. Step 1: Check checkbox state before clicking

   Use isSelected() to verify if checkbox is already selected.

2. Step 2: Click only if not selected

   Click checkbox only when it is not selected to avoid toggling off.

3. Step 3: Avoid unnecessary clicks

   WebElement cb = driver.findElement(By.id("terms")); if (!cb.isSelected()) { cb.click(); } // proceed to submit correctly implements this logic, ensuring checkbox is selected before submit.

4. Final Answer:

   Code that clicks checkbox only if not selected before submit. -> Option A

5. Quick Check:

   Check state, click if false, then submit [OK]

Hint: Click checkbox only if not selected to ensure correct state [OK]

Common Mistakes:

• Clicking checkbox unconditionally causing toggle off
• Clicking checkbox when already selected
• Ignoring checkbox state before submit