StringBuilder greeting = new StringBuilder("Day 1");
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Using the above StringBuilder, create a setCharAt() method that will change the "1" to a "2" in the String"Day 1". Explain how the setCharAt() method operates.

What will be an ideal response?


greeting.setCharAt(4, '2');To alter just one character in a StringBuilder, you can use the setCharAt() method, which allows you to change a character at a specified position within a StringBuilder object. This method requires two arguments: an integer position and a character. In the phrase "Day 1", the greeting.setCharAt(4, '2'); changes the value 1 to 2.

Computer Science & Information Technology

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