what is mutability?which one is mutable String or StringBuffer?and why?give
examples of each which shows the mutability of each String or StringBuffer
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Answer Posted / arjunkumar
Mutability means data which we can change.
StringBuffer class is mutable, because it can change its
data where as String class cant.
Example:
If you want to combine two strings we have two methods i.e
append() method and concat() method.
here append() is used to append the 2nd string to 1st string
and it can store in memory. where as concat() method is
combine the 2nd string to 1st string but it is not actuly
stored in memory it just show to us as combind
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