Which statement initializes a stringBuilder to a capacity of 128?

Question

Options

• AStringBuildersb = new String("128");
• BStringBuildersb = StringBuilder.setCapacity(128);
• CStringBuildersb = StringBuilder.getInstance(128);
• DStringBuildersb = new StringBuilder(128);

• A
  4% (2)
• B
  2% (1)
• C
  2% (1)
• D
  92% (47)

Explanation

Constructs a string builder with no characters in it and an initial capacity specified by the capacity Note: An instance of a StringBuilder is a mutable sequence of characters. The principal operations on a StringBuilder are the append and insert methods, which are overloaded so as to accept data of any type. Each effectively converts a given datum to a string and then appends or inserts the characters of that string to the string builder. The append method always adds these characters at the end of the builder; the insert method adds the characters at a specified point. Incorrect answers: StringBuilder sb = new String("128"); StringBuilder not String is required. setCapacity or getInstance do not work.

No community discussion yet for this question.