1.

Which of these classes is used to create an object whose character sequence is mutable?(a) String()(b) StringBuilder()(c) String() & StringBuilder()(d) None of the mentioned

Answer» Right answer is (b) StringBuilder()

Easiest explanation - Mutable strings are dynamic strings. They can grow dynamically as characters are added to them. stringbuilder class supports those methods that are useful for manipulating dynamic strings.


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