What is java util hashmap?
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When will we prefer to use set and list in java and why?
Is it safe for adding 10,00,000 records/objects to HashMap?, i.e is it safe to add millions of objects to HashMap?
What is an object-oriented paradigm?
What is java reflection?
What is the difference between a checked and an unchecked exception?
What is meant by JVM ?
What is java ceil?
What is namespace in java?
What is the difference between a constructor and a method?
How can constructor chaining be done by using the super keyword?
what is instanceof operator used in java?
How do you read a char in java?