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package demo.file; import java.io.File; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; public class ChangeFileLastModifiedExample { /** * @param args */ public static void main(String[] args) { try { File file = new File("C:\\users\\nopphanan7\\newfile.txt"); // 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 = "05/18/2014"; // 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(); } } }ผลลัพธ์ที่ได้คือ
Original Last Modified Date : 05/17/2014 Lastest Last Modified Date : 05/18/2014
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