Android Calendar的学习与运用

[java]
mport java.text.DateFormat;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

/**
* Android Calendar的运用
* @author Administrator
*
*/
public class CalendarUtil {

    private int weeks = 0;// 用来全局控制上一周，本周，下一周的周数变化
    private int MaxDate; // 一月最大天数
    private int MaxYear; // 一年最大天数

    public static void main(String[] args) {
        CalendarUtil tt = new CalendarUtil();
        System.out.println("获取当天日期:" + tt.getNowTime("yyyy-MM-dd"));
        System.out.println("获取本周一日期:" + tt.getMondayOFWeek());
        System.out.println("获取本周日的日期:" + tt.getCurrentWeekday());
        System.out.println("获取上周一日期:" + tt.getPreviousWeekday());
        System.out.println("获取上周日日期:" + tt.getPreviousWeekSunday());
        System.out.println("获取下周一日期:" + tt.getNextMonday());
        System.out.println("获取下周日日期:" + tt.getNextSunday());
        System.out.println("获得相应周的周六的日期:" + tt.getNowTime("yyyy-MM-dd"));
        System.out.println("获取本月第一天日期:" + tt.getFirstDayOfMonth());
        System.out.println("获取本月最后一天日期:" + tt.getDefaultDay());
        System.out.println("获取上月第一天日期:" + tt.getPreviousMonthFirst());
        System.out.println("获取上月最后一天的日期:" + tt.getPreviousMonthEnd());
        System.out.println("获取下月第一天日期:" + tt.getNextMonthFirst());
        System.out.println("获取下月最后一天日期:" + tt.getNextMonthEnd());
        System.out.println("获取本年的第一天日期:" + tt.getCurrentYearFirst());
        System.out.println("获取本年最后一天日期:" + tt.getCurrentYearEnd());
        System.out.println("获取去年的第一天日期:" + tt.getPreviousYearFirst());
        System.out.println("获取去年的最后一天日期:" + tt.getPreviousYearEnd());
        System.out.println("获取明年第一天日期:" + tt.getNextYearFirst());
        System.out.println("获取明年最后一天日期:" + tt.getNextYearEnd());
        System.out.println("获取本季度第一天:" + tt.getThisSeasonFirstTime(11));
        System.out.println("获取本季度最后一天:" + tt.getThisSeasonFinallyTime(11));
        System.out.println("获取两个日期之间间隔天数2008-12-1~2008-9.29:"
                + CalendarUtil.getTwoDay("2008-12-1", "2008-9-29"));
        System.out.println("获取当前月的第几周：" + tt.getWeekOfMonth());
        System.out.println("获取当前年份：" + tt.getYear());
        System.out.println("获取当前月份：" + tt.getMonth());
        System.out.println("获取今天在本年的第几天：" + tt.getDayOfYear());
        System.out.println("获得今天在本月的第几天(获得当前日)：" + tt.getDayOfMonth());
        System.out.println("获得今天在本周的第几天：" + tt.getDayOfWeek());
        System.out.println("获得半年后的日期："
                + tt.convertDateToString(tt.getTimeYearNext()));
    }


    public static int getYear() {
        return Calendar.getInstance().get(Calendar.YEAR);
    }


    public static int getMonth() {
        return Calendar.getInstance().get(Calendar.MONTH) + 1;
    }


    public static int getDayOfYear() {
        return Calendar.getInstance().get(Calendar.DAY_OF_YEAR);
    }


    public static int getDayOfMonth() {
        return Calendar.getInstance().get(Calendar.DAY_OF_MONTH);
    }


    public static int getDayOfWeek() {
        return Calendar.getInstance().get(Calendar.DAY_OF_WEEK);
    }


    public static int getWeekOfMonth() {
        return Calendar.getInstance().get(Calendar.DAY_OF_WEEK_IN_MONTH);
    }


    public static Date getTimeYearNext() {
        Calendar.getInstance().add(Calendar.DAY_OF_YEAR, 183);
        return Calendar.getInstance().getTime();
    }


    public static String convertDateToString(Date dateTime) {
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
        return df.format(dateTime);
    }


    public static String getTwoDay(String sj1, String sj2) {
        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
        long day = 0;
        try {
        &

补充：移动开发 , Android ,