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Quiz for List, Set, Map, Queue

Course: JAVA | Subject: Java | Topic: Java Collections Framework



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Q1: Which interface allows duplicate elements in Java?

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Q2: Which implementation of List is synchronized?

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Q3: Which collection does not allow duplicate keys?

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Q4: Which Set implementation maintains insertion order?

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Q5: Which Map implementation is sorted by keys?

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Q6: Which queue follows FIFO order?

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Q7: Which class implements both List and Deque interfaces?

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Q8: Which is thread-safe?

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Q9: Which collection does not maintain any order?

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Q10: What does the Map interface map?

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