If we instantiate a thread it is called in new state until the Start() method is called.
If we don't call a start() method for that thread instance, the thread is not called alive.
If we invoke run method without calling the start method for a thread instance, the code in run() method wil not be executed by a new thread but it will be executed by the existing thread only.
Tell me can an enum be extended?
Do you know what is the advantage of generic collection?
Explain me why doesn’t the following code generate a NullPointerException even when the instance is null?
Explain me what is a good usecase of calling System.gc()?
Do you know how threadsafe is enum in Java?
int a = 1L; won’t compile and int b = 0; b += 1L; compiles fine. Explain me why?
Explain me what is method overloading and method overriding?
Explain me what is the volatile keyword? How and why would you use it?
Tell us why would it be more secure to store sensitive data (such as a password, social security number, etc.) in a character array rather than in a String?
Explain me what is association?
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