packagecom.dada.test;importjava.text.SimpleDateFormat;importjava.util.Calendar;importjava.util.Date;

public classDateUtil {/*** 默认日期格式*/

public static String DEFAULT_FORMAT = "yyyy-MM-dd";/*** 测试主方法

*@paramargs*/

public static voidmain(String[] args) {for(int i = 1951;i < 1960;i++){

System.out.println(formatDate(getYearFirst(i)));

System.out.println(formatDate(getYearLast(i)));

}

System.out.println(formatDate(getCurrYearFirst()));

System.out.println(formatDate(getCurrYearLast()));

}/*** 格式化日期

*@paramdate 日期对象

*@returnString 日期字符串*/

public staticString formatDate(Date date){

SimpleDateFormat f= newSimpleDateFormat(DEFAULT_FORMAT);

String sDate=f.format(date);returnsDate;

}/*** 获取当年的第一天

*@paramyear

*@return

*/

public staticDate getCurrYearFirst(){

Calendar currCal=Calendar.getInstance();int currentYear =currCal.get(Calendar.YEAR);returngetYearFirst(currentYear);

}/*** 获取当年的最后一天

*@paramyear

*@return

*/

public staticDate getCurrYearLast(){

Calendar currCal=Calendar.getInstance();int currentYear =currCal.get(Calendar.YEAR);returngetYearLast(currentYear);

}/*** 获取某年第一天日期

*@paramyear 年份

*@returnDate*/

public static Date getYearFirst(intyear){

Calendar calendar=Calendar.getInstance();

calendar.clear();

calendar.set(Calendar.YEAR, year);

Date currYearFirst=calendar.getTime();returncurrYearFirst;

}/*** 获取某年最后一天日期

*@paramyear 年份

*@returnDate*/

public static Date getYearLast(intyear){

Calendar calendar=Calendar.getInstance();

calendar.clear();

calendar.set(Calendar.YEAR, year);

calendar.roll(Calendar.DAY_OF_YEAR,-1);

Date currYearLast=calendar.getTime();returncurrYearLast;

}

}