I want to set all my hashtags in lowercase in a string:
"Hello I'm a men #Athlete et I'm going to do sport #NeverGiveUp"
"Hello I'm a men #athlete et I'm going to
do sport #nevergiveup"
if your problem is how to convert all to simple letters hope this helps
String myString = "HashTag"; String myNewSimpleLetterString = myString.substring(0,5).toLowerCase(); //subString will get the characters from 0 - 5