Is an object null?
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When do we use synchronized methods in java?
What is the benefit of using enum to declare a constant?
What is update method and when it is called?
Explain inheritance in java?
how to get the max salary and name of employee from arraylist without using the Comperator or even Comparable interface?
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Can we create our own wrapper class in java?
what is the diff b/w arraylist and vector?
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What are the states of thread in java?
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Tell me are there implementations for sorting and searching in the java libarary?