Calender 总结

import java.util.Calendar;/** * 时间处理工具 * @author zhangheng * @data 2017-06-19 */public class CalenderTools {    /**     * 当前毫秒     * @return     */    public static long getCurrentMillsecond(){        return System.currentTimeMillis();    }    public static String getCurrentDate(){        String str="";        Calendar c= Calendar.getInstance();        c.setTimeInMillis(getCurrentMillsecond());        //年份        int year = c.get(Calendar.YEAR);        str +=year+":";        //月        int month = c.get(Calendar.MONTH)+1;        str +=month<10?"0"+month+":":month+":";        //日        int day = c.get(Calendar.DAY_OF_MONTH);        str +=day<10?"0"+day+" ":day+" ";        //小时        int hour = c.get(Calendar.HOUR_OF_DAY);        str +=hour<10?"0"+hour+":":hour+":";        //分钟        int minute = c.get(Calendar.MINUTE);        str +=minute<10?"0"+minute+":":minute+":";        //秒        int millsecond = c.get(Calendar.SECOND);        str +=millsecond<10?"0"+millsecond:millsecond;        return str;    }    public static void main(String[] args) {        System.out.println(getCurrentDate());    }}