Replacing a single character in a String

Question

The issue is needing to replace a single character in a given string while maintaining the other characters in the string.

The code is:

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Answer 1

You can use StringBuilder to replace a single character at some index, like this:

int charIndex = baseString.indexOf(charToBeReplaced);
StringBuilder baseStringBuilder = new StringBuilder(baseString);
baseStringBuilder.setCharAt(num2replace, secondChar);

Read more about StringBuilder's setCharAt() method here.