DateAdd -- compute the difference between two dates

       
import java.util.Date;

/**
 * DateAdd -- compute the difference between two dates.
 */
public class DateAdd {
  public static void main(String[] av) {
    //+
    /** Today's date */
    Date now = new Date();

    long t = now.getTime();

    t -= 700 * 24 * 60 * 60 * 1000;

    Date then = new Date(t);

    System.out.println("Seven hundred days ago was " + then);
    //-
  }
}

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DateAdd -- compute the difference between two dates : Calendar Date « Development Class « Java

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