Wu Yuxiong - born naturally develop common java class library study notes: date operating class DataFormat, SimpleDataFormat

import java.text.DateFormat ;
import java.util.Date ;
public class DateDemo03{
    public static void main(String args[]){
        DF1 DateFormat = null ;         // declare a DateFormat 
        DateFormat DF2 = null ;         // declare a DateFormat 
        DF1 = DateFormat.getDateInstance ();     // get a DateFormat object date 
        DF2 = DateFormat.getDateTimeInstance ();     // get the date and time DateFormat Object 
        System.out.println ( "dATE:" + df1.format ( new new a date ())); // by date format 
        System.out.println ( "DATETIME:" + df2.format ( new new a date ())) ;      // formatted according to the date and time

    }
};

import java.text.DateFormat ;
import java.util.Date ;
import java.util.Locale ;
public class DateDemo04{
    public static void main(String args[]){
        DF1 DateFormat = null ;         // declare a DateFormat 
        DateFormat DF2 = null ;         // declare a DateFormat 
        DF1 = DateFormat.getDateInstance (DateFormat.YEAR_FIELD, new new Locale ( "ZH", "the CN"));     // get a DateFormat object date 
        = DateFormat.getDateTimeInstance DF2 (DateFormat.YEAR_FIELD, DateFormat.ERA_FIELD, new new Locale ( "ZH", "the CN"));     // get the date and time the object DateFormat 
        System.out.println ( "dATE:" + df1.format ( new new a date ())); // by date format 
        System.out.println ( "DATETIME:" + df2 .format(newDATE ()));      // formatted according to the date and time

    }
};

import java.text.* ;
import java.util.* ;
public class DateDemo05{
    public static void main(String args[]){
        StrDate String = "2008-10-19 10:. 11: 30.345" ;
         // prepare first a template, extracted from digital date string 
        String PAT1 = "the MM-dd-YYYY HH: mm: ss.SSS" ;
         // prepare the second template, the number after the date of the extracted data to the specified format 
        String pat2 = "yyyy Year mM month dd day when HH mm ss a SSS millisecond" ;
        SDF-I the SimpleDateFormat = new new the SimpleDateFormat (PAT1);         // instantiate a template objects 
        the SimpleDateFormat SDF2 = new new the SimpleDateFormat (PAT2);         // instantiate a template objects 
        a Date D = null ;
         the try {
            D = sdf1.parse (strDate);     // given date string extracted from 
        } the catch (Exception E) {             // If the format string supplied error, exception handling is performed 
            e.printStackTrace ();         // print exception information 
        }
        System.out.println (sdf2.format (D));     // the date becomes the new format 
    }
};