import?java.util.*;
import?java.io.*;

/**
*?This?class?provides?two?file?I/O?methods?for?handling?employee?data.
*
*?@author???BlueDream
*?@version?1.0.0
*?@see?Employee
*/
public?class?EmployeeFileIO?{

/**
*?Creates?an?ArrayList?of?Employee?objects
*?from?a?file?that?contains?employee?data.
*?

*?Every?line?in?the?specified?file?should?contain?three?fields:?ID?name
*?and?salary?of?an?employee?in?the?following?format:?ID_name_salary
*?

*
*?@param?filename?the?name?of?a?file?containing?employee?data.
*?@return?an?ArrayList?of?Employee?objects.
*?@throws?FileNotFoundException?if?the?specified?file?does?not?exist.
*?@throws?IOException?if?an?I/O?error?occurs.
*?@throws?NoSuchElementException?if?the?data?in?t