Java functions to get the date in N days

date_in.java

import java.util.Calendar;
import java.util.Date;

public Date dateIn(int days) {
  Date date = new Date();

  Calendar cal = Calendar.getInstance();
  cal.setTime(date);
  cal.add(Calendar.DATE, days);
  cal.set(Calendar.MINUTE, 0);
  cal.set(Calendar.SECOND, 0);
  cal.set(Calendar.HOUR_OF_DAY, 0);

  date = cal.getTime()

  return date;
}

public Date dateInFrom(Date from, int days) {
  Calendar cal = Calendar.getInstance();
  cal.setTime(from);
  cal.add(Calendar.DATE, days);
  cal.set(Calendar.MINUTE, 0);
  cal.set(Calendar.SECOND, 0);
  cal.set(Calendar.HOUR_OF_DAY, 0);

  Date date = from;
  date = cal.getTime

  return date;
}