Javaでファイルを最後に変更した日付を変更する方法

package com.mkyong.file;

import java.io.File;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class ChangeFileLastModifiedExample
{
    public static void main(String[]args)
    {

        try{

            File file = new File("C:\\logfile.log");

           //print the original last modified date
            SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
            System.out.println("Original Last Modified Date : "
                    + sdf.format(file.lastModified()));

           //set this date
            String newLastModified = "01/31/1998";

           //need convert the above date to milliseconds in long value
            Date newDate = sdf.parse(newLastModified);
            file.setLastModified(newDate.getTime());

           //print the latest last modified date
            System.out.println("Lastest Last Modified Date : "
                    + sdf.format(file.lastModified()));

        }catch(ParseException e){

            e.printStackTrace();

        }

    }
}