import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date;public class HelloWord { public static void main(String[] args) throws Exception {
addDate("2009/06/27",5); } public static String addDate(String m_date,int x) { SimpleDateFormat format=new SimpleDateFormat("yyyy/MM/dd"); Date date = null; try { date = format.parse(m_date); } catch (java.text.ParseException e) { e.printStackTrace(); } if (date==null) return ""; Calendar cal=Calendar.getInstance(); cal.setTime(date); cal.add(Calendar.DAY_OF_MONTH,x); date=cal.getTime(); System.out.println(x+" days after is "+format.format(date)); cal=null; return format.format(date); } }结果: 5 days after is 2009/07/02
import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.Locale;public class AddDay { private static boolean isWorkingDay = false;// 是否为工作日 public static void main(String[] args) throws Exception { isWorkingDay = true; addDate("2009/06/25", 5); } public static String addDate(String m_date, int x) { SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd"); Date date = null; int dayadd = x; try { date = format.parse(m_date); } catch (java.text.ParseException e) { e.printStackTrace(); } if (date == null) return ""; Calendar cal = Calendar.getInstance(); cal.setTime(date); if (isWorkingDay) { SimpleDateFormat form = new SimpleDateFormat("EEE", new Locale( "US", "en")); String dayinweek = form.format(date); if (dayinweek.equals("Sat")) { dayadd = x + 1; } else if (dayinweek.equals("Sun")) { } else { dayadd = x + 2; } } cal.add(Calendar.DAY_OF_MONTH, dayadd); Date newdate = cal.getTime(); System.out.println((isWorkingDay ? "工作日" : "自然日") + ":" + x + " days after " + format.format(date) + " is " + format.format(newdate)); cal = null; return format.format(date); } }实现了要求的功能
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;public class HelloWord {
public static void main(String[] args) throws Exception {
addDate("2009/06/27",5); }
public static String addDate(String m_date,int x)
{
SimpleDateFormat format=new SimpleDateFormat("yyyy/MM/dd");
Date date = null;
try {
date = format.parse(m_date);
} catch (java.text.ParseException e) {
e.printStackTrace();
}
if (date==null) return "";
Calendar cal=Calendar.getInstance();
cal.setTime(date);
cal.add(Calendar.DAY_OF_MONTH,x);
date=cal.getTime();
System.out.println(x+" days after is "+format.format(date));
cal=null;
return format.format(date);
}
}结果:
5 days after is 2009/07/02
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;public class AddDay { private static boolean isWorkingDay = false;// 是否为工作日 public static void main(String[] args) throws Exception {
isWorkingDay = true;
addDate("2009/06/25", 5);
} public static String addDate(String m_date, int x) {
SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd");
Date date = null;
int dayadd = x;
try {
date = format.parse(m_date);
} catch (java.text.ParseException e) {
e.printStackTrace();
}
if (date == null)
return "";
Calendar cal = Calendar.getInstance();
cal.setTime(date);
if (isWorkingDay) {
SimpleDateFormat form = new SimpleDateFormat("EEE", new Locale(
"US", "en"));
String dayinweek = form.format(date);
if (dayinweek.equals("Sat")) {
dayadd = x + 1;
} else if (dayinweek.equals("Sun")) { } else {
dayadd = x + 2;
}
}
cal.add(Calendar.DAY_OF_MONTH, dayadd);
Date newdate = cal.getTime();
System.out.println((isWorkingDay ? "工作日" : "自然日") + ":" + x
+ " days after " + format.format(date) + " is "
+ format.format(newdate));
cal = null;
return format.format(date);
}
}实现了要求的功能