Calendar类得到当前日历

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import java.util.Calendar;public class CalendarRiQi {public static void main(String[] args) {Calendar cal  = Calendar. getInstance();Integer year=cal.get(Calendar.YEAR);//得到当前年Integer month=cal.get(Calendar.MONTH)+1;//得到当前月Integer day=cal.get(Calendar.DAY_OF_MONTH);//得到当前天Integer hour=cal.get(Calendar.HOUR_OF_DAY);//得到当前时Integer minute=cal.get(Calendar.MINUTE);//得到当前分Integer millisecond=cal.get(Calendar.MILLISECOND);//得到当前毫秒}}

//或者用Date方法

<pre name="code" class="java">import java.text.SimpleDateFormat;import java.util.Date;public class L1 {public static void main(String[] args) {SimpleDateFormat sdf = new SimpleDateFormat("yyyy_MM_dd_S");String str = sdf.format(new Date());System.out.println(str);//或者System.out.println(new SimpleDateFormat("yyyy_MM_dd_S").format(new Date()));}}

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