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Which among the following methods is used to reverse the sequence of characters in a StringBuilder object?a)backwards()b)invert()c)reverse()d)flip()

Question

Which among the following methods is used to reverse the sequence of characters in a StringBuilder object?

a) backwards()
b) invert()
c) reverse()
d) flip()

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Solution

To determine which method is used to reverse the sequence of characters in a StringBuilder object, we can analyze the given options:

  1. backwards(): This is not a standard method in the StringBuilder class in Java.
  2. invert(): This method does not exist in the StringBuilder class.
  3. reverse(): This is a well-known method in the StringBuilder class that reverses the characters in the object.
  4. flip(): There is no flip() method in the StringBuilder class.

Conclusion

The correct answer is c) reverse(). This method effectively reverses the order of the characters in a StringBuilder instance.

This problem has been solved

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