java獲取年份的第一天和最后一天

package com.dada.test;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
/**

@author li_yueling
@version 1.0 2011-03-25
/
public class DateUtil {
 /**

默認日期格式
*/
public static String DEFAULT_FORMAT = "yyyy-MM-dd";
/**

測試主方法
@param args
*/
public static void main(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
@param date 日期對象
@return String 日期字符串
*/
public static String formatDate(Date date){
 SimpleDateFormat f = new SimpleDateFormat(DEFAULT_FORMAT);
 String sDate = f.format(date);
 return sDate;
}
/**

獲取當年的第一天
@param year
@return
*/
public static Date getCurrYearFirst(){
 Calendar currCal=Calendar.getInstance();

 int currentYear = currCal.get(Calendar.YEAR);
 return getYearFirst(currentYear);
}
/**

獲取當年的最后一天
@param year
@return
*/
public static Date getCurrYearLast(){
 Calendar currCal=Calendar.getInstance();

 int currentYear = currCal.get(Calendar.YEAR);
 return getYearLast(currentYear);
}
/**

獲取某年第一天日期
@param year 年份
@return Date
*/
public static Date getYearFirst(int year){
 Calendar calendar = Calendar.getInstance();
 calendar.clear();
 calendar.set(Calendar.YEAR, year);
 Date currYearFirst = calendar.getTime();
 return currYearFirst;
}
/**

獲取某年最后一天日期
@param year 年份
@return Date
*/
public static Date getYearLast(int year){
 Calendar calendar = Calendar.getInstance();
 calendar.clear();
 calendar.set(Calendar.YEAR, year);
 calendar.roll(Calendar.DAY_OF_YEAR, -1);
 Date currYearLast = calendar.getTime();
return currYearLast;
}




}</pre>