Q. Which of these class can generate pseudorandom numbers?

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Q. Which of these method of Locale class can be used to obtain country of operation?

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Q. Which of these is a method can generate a boolean output?

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Q. What is the use of Observable class?

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Q. Which of these methods is used to notify observer the change in observed object?

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Q. Which of these methods calls update() method?

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Q. Which of these methods is called when observed object has changed?

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Q. Which of these classes can schedule task for execution in future?

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Q. Which of these interfaces is implemented by TimerTask class?

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Q. Which of these package provides the ability to read and write in Zip format?

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Q. Which of these packages contain all the collection classes?

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Q. Which of these classes is not part of Java’s collection framework?

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Q. Which of this interface is not a part of Java’s collection framework?

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Q. Which of these methods deletes all the elements from invoking collection?

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Q. What is Collection in Java?

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Q. Which of these is an incorrect form of using method max() to obtain a maximum element?

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Q. Which of these methods sets every element of a List to a specified object?

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Q. Which of these methods can randomize all elements in a list?

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Q. Which of these methods can convert an object into a List?

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Q. Which of these is true about unmodifiableCollection() method?

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