Android Utililty Methods String Mask

List of utility methods to do String Mask

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Description

The list of methods to do String Mask are organized into topic(s).

Method

StringmaskLeft(String s, int len, char maskChar)
Returns a string consisting of "s", with each of the first "len" characters replaced by "maskChar" character. 
if (len <= 0) {
    return s;
len = Math.min(len, s.length());
StringBuilder sb = new StringBuilder();
for (int i = 0; i < len; i++) {
    sb.append(maskChar);
sb.append(s.substring(len));
return sb.toString();