What is integers and example?
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Explain the difference between string, stringbuffer and stringbuilder in java?
How many types of threads are there in java?
What is array in java?
Why sleep()is in Thread and wait() in Object class? Why can't I have both in one class or vice versa?
What is memory leak and how does java handle it?
Why we use multi threading instead of multiprocessing?
How multipleInheritance is possible in java?
Is string a datatype?
What happens if we override private method?
Can a boolean be null java?
Can a vector contain heterogenous objects?
What is Connection pooling? Explain Pros and Cons?