Is main an identifier?
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I want my class to be developed in such a way that no other class (even derived class) can create its objects. How can I do so?
How concurrent hashmap works?
What do you mean by static variable?
Give the hierarchy of inputstream and outputstream classes.
How many bytes is a string java?
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Difference between default and protected access specifiers?
Write a regular expression to validate a password. A password must start with an alphabet and followed by alphanumeric characters; its length must be in between 8 to 20.
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How many bytes is string in java?
Does apple use java?