Explain 5 io best practices?
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why not override thread to make a runnable? : Java thread
What is the purpose of abstract class?
How many boolean functions are there?
Explain about data types?
What do u mean by wrapper Class? What do u mean by Jvm... How do u change JVM for other OS? Or No need to Change ...? its like tricky
How many types of gc are there in java?
What is wrapper class example?
What is the maximum size of hashmap in java?
I have an HashMap object, which has with key and value pair. It has 10 keys and values in that object. Now the question is I want insert new key and value in middle or any where in that list but not at the end or at the top. Is it possible or not. If yes how can we achieve this one?
What is difference between equals and hashcode method?
what are the jsp tags with example?
What is collection class in java? List down its methods and interfaces.