Does java vector allow null?
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What is use of static method?
What are recursive functions?
Why are the methods of the math class static?
How do you ensure that n threads can access n resources without deadlock?
Can we have two main methods in a java class?
How is abstraction implemented in java ?
What does the “static” keyword mean?
What is the difference between compare and compareto in java?
I have a sorting issue with a Hashmap. My constraint is that I MUST use the Hashmap and work with existing code. I do a database query and place the results in a Hashmap. When I iterate thru the Hashmap, it loses the original alphabetical sorting done by the database. So, my problem is that I must sort the results coming out of the Hashmap which is then placed into another class.
What is the use of toarray () in java?
How an object is serialized in java?
Difference between comparator and comparable in java?