What is with the encoding on the servlet?

Question

Java

Some data is received from the JSP form to the servlet, in this case I enter the surname "Ivanov" which I write to String, in the debugger I see that string=Ðванов, the page is encoded UTF-8, changing to windows-1251 did not give anything , only the characters have changed, but the text is still illegible ... Tell me what could be the reason and how to fix it?

Answer 1

search=new String(search.getBytes("ISO-8859-1"),"utf-8");

All decided by this

Answer 2

https://m.habr.com/ru/post/147843/
Original utf-8, recognized as win-1252.