import com.fasterxml.jackson.dataformat.xml.*;
var nums = new int[] {2, 3, 5, 7, 11};
var xmlMapper = new XmlMapper();
var data_s = xmlMapper.writeValueAsString(nums);
//<ints><item>2</item><item>3</item><item>5...
System.out.printf("data_s is '%s'", data_s);