[Solved] Why does getWindowHandles() return a Set instead of a List in Selenium Java? — Ans: Because window handles are unique and order does not matter | Selenium Java

Selenium Java - Handling Windows, Frames, and Alerts

Why does getWindowHandles() return a Set instead of a List in Selenium Java?

ABecause Lists cannot store String values

BBecause Sets allow duplicate window handles

CBecause window handles are unique and order does not matter

DBecause Sets maintain insertion order

Step-by-Step Solution

Solution:

Step 1: Understand uniqueness of window handles
Each window handle is unique; duplicates are not possible.
Step 2: Recognize that order is not important
The order of window handles is not guaranteed or required, so a Set is appropriate.
Final Answer:
Because window handles are unique and order does not matter -> Option C
Quick Check:
Set used for unique, unordered window handles [OK]

Quick Trick: Window handles are unique; order is irrelevant, so Set is used [OK]

Common Mistakes:

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Why does getWindowHandles() return a Set instead of a List in Selenium Java?