Does treeset allow null in java?


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What is the technique adopted to create an immutable class?

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Enlist few advantages of inheritance?

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Why is inheritance used in java?

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Describe different states of a thread.

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who can we create the object of a class? in how many ways we can create it (max 5)

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make a method which any number and any type of argument and print sum of that arguments.....

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What is formatted output?

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What is loop in java?

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how cani read a command line argument?(usingfile object).

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What do you mean by inner class in java? Explain

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What are the main differences between notify and notifyAll in Java?

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how many ways to create Thread and which one is good? runnable interface ot Thread class?

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