What is hashmap in java?
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What is unsigned char?
Why is logger singleton?
We have two methods to create methods the threads. 1. Implementing runnable interface 2. Extending to thread class and overriding run method. Among these two which one is better and why? Please explain me in detail.
What is difference between final and immutable?
Is alive in java?
What is java full form?
Why can't we make jsp as a controller and action servlet in struts?
What is the abstract class?
Difference between static synchronization vs. Instance synchronization?
What is the association?
What is the default size of arraylist in java?
If we don’t want some of the fields not to serialize how to do that?