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.
Answer / murali.25
1) Use a tree map or construct a treemap from hashmap.
2) If you have used order by in the query to DB, use LinkedHashMap
3) Have a java class with attributes corresponding to fields from the database table. Implement comparator interface.
|Is This Answer Correct ?||3 Yes||1 No|
what is the diffrences between platform independent and portable
Can I overload to string method
what is different between static and non static methods ,using example
Are nested try statements are possible?
What is meant by Encapsulation? Can you write a class to explain encapsulation?
What are possible key words, we can use to declare a class?
what is Vector class?
What is Yield() method when we r using this ? tell exactly
What is access modifiers?
write SQL command for table employee where print first name or last name start like "A" and who is working in domain(angular js,java,dotnet)
JSP is by default thread safe or not? what is the meaning of isThreadSafe="true" and isThreadSafe="false". Explain it? Thanks, Seenu