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Q. An interface contains __________ methods.
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Q. Iterator returned by ConcurrentSkipListMap on key, value and entry is?
Q. Which of these methods return a smallest whole number greater than or equal to variable X?
Q. What is the number of bytes used by Java primitive long?
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Q. In Java, what is the purpose of the isEmpty() method of a String object?
Q. What will be the output for the below code?
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