while (iterator.hasNext()) {
// Converting the first character of the key into a lower case.
String input = iterator.next();
String output = Character.toLowerCase(input.charAt(0)) + (input.length() > 1 ? input.substring(1) : "");
// Searching for a pattern in the String using the key.
while (iterator.hasNext()) {
// Converting the first character of the key into a lower case.
String input = iterator.next();
String output = Character.toLowerCase(input.charAt(0)) + (input.length() > 1 ? input.substring(1) : "");
// Searching for a pattern in the String using the key.