Why do we need wrapper class?
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Give differences between Quicksort &Mergesort. When should these sorts be used andwhat is their running time in java?
why interfaces are faster than abstract classes?
How to do validation of the fields in any project ?
Which is better stringbuilder or stringbuffer?
Can a abstract class be declared final?
What exactly is a .class file?
What about static nested classes in java?
What is the meaning of 3 dots in java?
Is void a type?
What is space character in java?
what is mean by String and StringBuffer? What is mean by Methooverriding and Overloading?
Create a form of user Login in JSP, that accepts the user name and password from user and authenticate it with user names and passwords stored in database. (Plz provide me answer immediately)