What is the use of a copy constructor?
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What is double checked locking in singleton?
Can an interface extend a class?
Is map sorted in java?
Write a function to find out longest palindrome in a given string?
Difference difference paint() and paintcomponent()?
what is object-oriented programming in java?
What is the numeric promotion?
What are the Class Libraries ?
How many bits is a boolean?
Can this keyword be used to refer static members?
we have syntax like for(int var : arrayName) this syntax is to find whether a number is in the array or not.but i want to know how to find that number's location.
What is regex used for?