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Lower case to upper case :

<!-- EDY RAKHMAN -->
<span>${fn:toUpperCase('edy rakhman')}</span>

Upper case to lower case :

<!-- edy rakhman -->
<span>${fn:toLowerCase('EDY RAKHMAN')}</span>

<!-- Edy Rakhman -->
<span style="text-transform: capitalize">${fn:toLowerCase('EDY RAKHMAN')}</span>

Sebelum mencoba cara di atas silahkan import fungsi yang ada di JSTL :

<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>