How to replace all characters in a Java string with stars

Question

I want to replace all the characters in a Java String with * character. So it shouldn\'t matter what character it is, it should be replaced with a *

Answer 1

How abt creating a new string with the number of * = number of last string char?

StringBuffer bf = new StringBuffer();
for (int i = 0; i < source.length(); i++ ) {
    bf.append('*');
}