裸睡的鱼

package com.chryl.test;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;/** * Created By Chryl */public class Test9 { public static void main(String[] args) throws Exception { SimpleDateFormat sdf = .

/** * * @param num ﹣3 三天前 +3 三天后 * @return */ public static String getDayAgoOrAfterString(int num){ Calendar calendar1 = Calendar.getInstance(); SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd"); ...

package com.chryl.test;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;/** * 获取月初和月末 */public class Test5 { public static void main(String[] args) throws Exception { getFirstAndLastDayOfMonth("2019-0.

String datetime = "20140212111012"; DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyyMMddHHmmss"); LocalDateTime ldt = LocalDateTime.parse(datetime,dtf); System.out.println(ldt);..