What is hashmap and map?
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When will we use them?
What about interthread communication and how it takes place in java?
What are synchronized methods ?
What invokes a thread's run() method in java programming?
Java is based on pass by reference or pass by value ..
How do you differentiate abstract class from interface?
What is the purpose of a default constructor?
What is a stream? what are the different types and classes of Streams?
How to convert string to int in java?
What is the difference between conversation & casting?
What is object class in java?
Can we call thread start () twice?