public class CalendarTest {

public static void main(String[] args) {

// 获取当前年份、月份、日期

Calendar cale = null;

cale = Calendar.getInstance();

int year = cale.get(Calendar.YEAR);

int month = cale.get(Calendar.MONTH) + 1;

int day = cale.get(Calendar.DATE);

int hour = cale.get(Calendar.HOUR_OF_DAY);

int minute = cale.get(Calendar.MINUTE);

int second = cale.get(Calendar.SECOND);

int dow = cale.get(Calendar.DAY_OF_WEEK);

int dom = cale.get(Calendar.DAY_OF_MONTH);

int doy = cale.get(Calendar.DAY_OF_YEAR);

System.out.println("Current Date: " + cale.getTime());

System.out.println("Year: " + year);

System.out.println("Month: " + month);

System.out.println("Day: " + day);

System.out.println("Hour: " + hour);

System.out.println("Minute: " + minute);

System.out.println("Second: " + second);

System.out.println("Day of Week: " + dow);

System.out.println("Day of Month: " + dom);

System.out.println("Day of Year: " + doy);

// 获取当月第一天和最后一天

SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");

String firstday, lastday;

// 获取前月的第一天

cale = Calendar.getInstance();

cale.add(Calendar.MONTH, 0);

cale.set(Calendar.DAY_OF_MONTH, 1);

firstday = format.format(cale.getTime());

// 获取前月的最后一天

cale = Calendar.getInstance();

cale.add(Calendar.MONTH, 1);

cale.set(Calendar.DAY_OF_MONTH, 0);

lastday = format.format(cale.getTime());

System.out.println("本月第一天和最后一天分别是 ： " + firstday + " and " + lastday);

// 获取当前日期字符串

Date d = new Date();

System.out.println("当前日期字符串1：" + format.format(d));

System.out.println("当前日期字符串2：" + year + "/" + month + "/" + day + " "

+ hour + ":" + minute + ":" + second);

}

}

 

 

 

运行效果图如下：