Web Reference: Apr 4, 2023 · The codePointCount () method of StringBuilder class returns the number of Unicode code points in the specified text range in String contained by StringBuilder. This method takes two indexes as a parameter- first beginIndex which represents index of the first character of the text range and endIndex which represents index after the last ... 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. In this example, we create a StringBuilder object with a mix of ASCII and Unicode characters. By passing 0 as the beginIndex and sb.length() as the endIndex to the codePointCount() method, we are counting the code points for the entire StringBuilder sequence.
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