What is time complexity java?
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How do you compare two strings lexicographically?
Can substring create new object?
What is hash code collision?
What is Enum in Java?
what is request dispatcher and how does it work?
What are the types of exceptions?
How an object is serialized in java?
What is meant by throwing an Exception?
Why do we need singleton class?
What is Connection pooling? Explain Pros and Cons?
What are heap memory and stack memory and what are memory tables.
What is the purpose of main function in java?