Multiple Checkbox

i have my jsp page

    <c:forEach items="${roleList}" var="role">
    <input type="checkbox" name="roleId[]" value="${role.roleId}"> ${role.roleDescription} <br>
    </c:forEach>

i have my servlet.java
int [] roleId = new int [] { Integer. parseInt ( request . getParameter ( "roleId [] ") ) } ;
String sql = "insert into users (roleId) values(?)";
for ( int i = 0 ; i < roleId . length ; i++ ) {
pstmt . setInt ( 4 , roleId [ i ] );
}
request . getRequestdispatcher ( " dashboard . jsp " ) . forward ( request , response ) ;