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5,413 software development test engineer interview questions shared by candidates

What are the main interfaces in the Java Collections Framework? What are the differences between HashSet and TreeSet? What is the difference between HashMap and Hashtable? Explain the difference between Comparator and Comparable. How do you iterate over a List in Java? What is the difference between Queue and Deque? What is the difference between ArrayList and Vector? How does a ConcurrentHashMap work?
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Software Development Engineer In Test (SDET)

Interviewed at Mastercard

4.1★
Jul 12, 2024

What are the main interfaces in the Java Collections Framework? What are the differences between HashSet and TreeSet? What is the difference between HashMap and Hashtable? Explain the difference between Comparator and Comparable. How do you iterate over a List in Java? What is the difference between Queue and Deque? What is the difference between ArrayList and Vector? How does a ConcurrentHashMap work?

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