java日期相加減
import java.util.*;
import java.text.*;
public class formatDate {
public formatDate() {
}
// 格式化日期爲字符串 "yyyy-MM-dd hh:mm"
public String formatDateTime(Date basicDate,String strFormat) {
SimpleDateFormat df = new SimpleDateFormat(strFormat);
return df.format(basicDate);
}
// 格式化日期爲字符串 "yyyy-MM-dd hh:mm"
public String formatDateTime(String basicDate,String strFormat) {
SimpleDateFormat df = new SimpleDateFormat(strFormat);
Date tmpDate=null;
try {
tmpDate=df.parse(basicDate);
}
catch(Exception e) {
// 日期型字符串格式錯誤
}
return df.format(tmpDate);
}
// 當前日期加減n天后的日期,返回String (yyyy-mm-dd)
public String nDaysAftertoday(int n) {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Calendar rightNow = Calendar.getInstance();
//rightNow.add(Calendar.DAY_OF_MONTH,-1);
rightNow.add(Calendar.DAY_OF_MONTH,+n);
return df.format(rightNow.getTime());
}
// 當前日期加減n天后的日期,返回String (yyyy-mm-dd)
public Date nDaysAfterNowDate(int n) {
Calendar rightNow = Calendar.getInstance();
//rightNow.add(Calendar.DAY_OF_MONTH,-1);
rightNow.add(Calendar.DAY_OF_MONTH,+n);
import java.text.*;
public class formatDate {
public formatDate() {
}
// 格式化日期爲字符串 "yyyy-MM-dd hh:mm"
public String formatDateTime(Date basicDate,String strFormat) {
SimpleDateFormat df = new SimpleDateFormat(strFormat);
return df.format(basicDate);
}
// 格式化日期爲字符串 "yyyy-MM-dd hh:mm"
public String formatDateTime(String basicDate,String strFormat) {
SimpleDateFormat df = new SimpleDateFormat(strFormat);
Date tmpDate=null;
try {
tmpDate=df.parse(basicDate);
}
catch(Exception e) {
// 日期型字符串格式錯誤
}
return df.format(tmpDate);
}
// 當前日期加減n天后的日期,返回String (yyyy-mm-dd)
public String nDaysAftertoday(int n) {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Calendar rightNow = Calendar.getInstance();
//rightNow.add(Calendar.DAY_OF_MONTH,-1);
rightNow.add(Calendar.DAY_OF_MONTH,+n);
return df.format(rightNow.getTime());
}
// 當前日期加減n天后的日期,返回String (yyyy-mm-dd)
public Date nDaysAfterNowDate(int n) {
Calendar rightNow = Calendar.getInstance();
//rightNow.add(Calendar.DAY_OF_MONTH,-1);
rightNow.add(Calendar.DAY_OF_MONTH,+n);
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