Q. Which of these return type of hasNext() method of an iterator?

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Q. Which of these methods is used to obtain an iterator to the start of collection?

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Q. Which of these methods can be used to move to next element in a collection?

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Q. Which of these iterators can be used only with List?

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Q. Which of these is a method of ListIterator used to obtain index of previous element?

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Q. Which of these exceptions is thrown by remover() method?

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Q. Which of the below is not a subinterface of Queue?

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Q. What is the remaining capacity of BlockingQueue whose intrinsic capacity is not defined?

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Q. PriorityQueue is thread safe.

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Q. What is difference between dequeue() and peek() function of java?

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Q. What is the difference between Queue and Stack?

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Q. What are the use of front and rear pointers in CircularQueue implementation?

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Q. What is the correct method used to insert and delete items from the queue?

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Q. Which data structure is used in Breadth First Traversal of a graph?

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Q. Where does a new element be inserted in linked list implementation of a queue?

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Q. If the size of the array used to implement a circular queue is MAX_SIZE. How rear moves to traverse inorder to insert an element in the queue?

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Q. Which of these standard collection classes implements all the standard functions on list data structure?

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Q. Which of this method is used to make all elements of an equal to specified value?

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Q. Which of these method of Array class is used sort an array or its subset?

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Q. Which of these methods can be used to search an element in a list?

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