Is ++ operator is thread safe in java?
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Can we have 2 main methods in java class?
What is widening and narrowing in java? Discuss with an example.
What is the use of System class?
What is unicode?
Why should we create an object? what is a need of it? Apart from access members of a class i want what is a need of object what does it contain?? In normal class to access any member of thaht class we create object where as for static class we access its members using class name. what is a difference between them... thanks in advance.
Is string is a data type?
What is number data type in java?
What is final modifier?
What method is used to know the status of Checkbox(i.e it is checked or unchecked)?
Explain the purpose of garbage collection in Java?
Why do we need variables?
is java support call by reference and call by value, if supports please explain?