1.错误描述 Exception in thread "main" java.lang.IllegalArgumentException: Cannot format given Object as a Date at java.text.DateFormat.format(Unknown Source) at java.text.Format.format(Unknown Source) at com.you.freemarker.model.FirstDayOfQuarter.ge…

Java获取某年某周的第一天 1.设计源码 FirstDayOfWeek.java: /** * @Title:FirstDayOfWeek.java * @Package:com.you.freemarker.model * @Description:获取某年某周的第一天 * @author:Youhaidong(游海东) * @date:2014-5-29 下午11:29:53 * @version V1.0 */ package com.you.freemarker.model; impo…

Java获取某年某月的第一天 1.设计源码 FisrtDayOfMonth.java: /** * @Title:FisrtDayOfMonth.java * @Package:com.you.freemarker.model * @Description:获取某年某月的第一天 * @author:Youhaidong(游海东) * @date:2014-5-29 下午11:21:31 * @version V1.0 */ package com.you.freemarker.model; im…

/** * 获取某年某月的第一天 * @Title:getFisrtDayOfMonth * @Description: * @param:@param year * @param:@param month * @param:@return * @return:String * @throws */ public static String getFisrtDayOfMonth(int year,int month){ Calendar cal = Calendar.getInstance();…

Java获取某年某月的最后一天 1.设计源码 LastDayOfMonth.java: /** * @Title:LastDayOfMonth.java * @Package:com.you.freemarker.model * @Description:获取某月的最后一天 * @author:Youhaidong(游海东) * @date:2014-5-29 下午10:58:20 * @version V1.0 */ package com.you.freemarker.model; impo…

package com.dada.test; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; /** * @author * @version * */ public class DateUtil { /** * 默认日期格式 */ public static String DEFAULT_FORMAT = "yyyy-MM-dd"; /** * 测试主方法 * @…

package com.date; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; public class Test { public static SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd"); public static SimpleDateFormat format1 = new Sim…

package test; import java.text.SimpleDateFormat; import java.util.Calendar; /** * ClassName: LastDayOfWeek * @Description: TODO * @author Owen * @date 2015年12月22日 */ public class LastDayOfWeek { /** * 获取某年某周的最后一天 * @Title:getLastDayOfWeek * @Descript…

获取当前年份 月份,当月第一天和最后一天,工作中会经常用到,下面是代码: package basic.day01; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; public class DateTest { public static void main(String[] args) { // 获取当前年份.月份.日期 Calendar cal = Calendar.ge…

Calendar calendar = Calendar.getInstance(); calendar.set(Calendar.YEAR, 2016); calendar.set(Calendar.MONTH, 02); int day = calendar.getActualMaximum(Calendar.DATE); calendar.set(Calendar.DAY_OF_MONTH, day); String lastDayOfMonth = (new SimpleDateForm…