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Which is a valid declarations of a String?

  • A.String s1 = null;
  • B.String s2 = 'null';
  • C.String s3 = (String) 'abc';
  • D.String s4 = (String) '\ufeed';

Answer: A

Option A sets the String reference to null.

Option B is wrong because null cannot be in single quotes.

Option C is wrong because there are multiple characters between the single quotes ('abc').

Option D is wrong because you can't cast a char (primitive) to a String (object).

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