Why is stringbuffer faster than string?
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What is map and hashmap? also tell the difference.
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What is the difference between variable & constant?
Why pointers are not used in java?
what is generics in jdk1.5?
what is purpose of writting public static void main(Strind arg[]) in java..?
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class A{ class B{ } } in which name u save the file,its the program compile?
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Write a program to reverse array in place?