What is the difference between hashmap and hashtable in java?
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class test { private static void main(String []adsf) { } } explain me that the above code is error or exception
What are the high-level thread states in java programming?
Lowest Common ancestor in a Binary Search Tree and Binary Tree.
What is onClassLoader in java?
What is the range of the char type?
What is application system?
what is session facade ?
What is method reference 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 maximum size of arraylist in java?
What is singleton class in java and how can we make a class singleton?
Explain about serializable interface in java?