Java date Gets the method of realizing the time of the month and the day _java

Source: Internet
Author: User
Tags dateformat

Java Date Gets the implementation of the seconds and minutes of the month and day

Package com.util; 
Import Java.text.DateFormat; 
Import Java.util.Calendar; 
 
 
Import Java.util.Date; 
  public class Test {public void gettimebydate () {Date date = new Date (); 
  DateFormat df1 = Dateformat.getdateinstance ();//date format, accurate to day System.out.println (Df1.format (date)); 
  DateFormat DF2 = Dateformat.getdatetimeinstance ();//Can be accurate to time-seconds System.out.println (Df2.format (date)); 
  DateFormat df3 = Dateformat.gettimeinstance ();//Only show time seconds System.out.println (Df3.format (date)); DateFormat df4 = dateformat.getdatetimeinstance (dateformat.full,dateformat.full); 
  Display date, week, last afternoon, time (accurate to second) System.out.println (Df4.format (date)); DateFormat df5 = dateformat.getdatetimeinstance (Dateformat.long,dateformat.long); 
  Display date, last afternoon, time (accurate to second) System.out.println (Df5.format (date)); DateFormat Df6 = dateformat.getdatetimeinstance (Dateformat.short,dateformat.short); 
  Display date, Upper afternoon, time (exact to minute) System.out.println (Df6.format (date)); DateFormat df7 = dateformat.getdatetimeinstance (dateformat.medIum,dateformat.medium); 
 Displays the date, time (exact to minute) System.out.println (Df7.format (date)); 
  public void Gettimebycalendar () {Calendar cal = Calendar.getinstance (); int year = Cal.get (calendar.year);//Get years int month=cal.get (calendar.month);//Get month int day=cal.get (calendar.date); Take the day int hour=cal.get (calendar.hour),//hour int minute=cal.get (calendar.minute);//min. int Second=cal.get (calendar.se COND);//sec int weekofyear = Cal.get (Calendar.day_of_week);///The day of the Week System.out.println ("Now the time is: A.D." +year+ "Year" +month+ "month" 
 +day+ "Day" +hour+ "when" +minute+ "minutes" +second+ "Seconds Week" +weekofyear); 
  public static void Main (string[] args) {test t=new test (); 
  T.gettimebydate (); 
  System.out.println ("****************************"); 
 T.gettimebycalendar (); } 
}

Get day, if greater than 16 then + 2 months, otherwise + 1 months, output 7 months

public static void Main (string[] as) throws Exception { 
 int J; 
 Calendar cc = Calendar.getinstance (); 
 int myyear = Cc.get (calendar.year); 
 int mymonth = Cc.get (calendar.month); 
 J=cc.get (calendar.date) >16?3:2; 
 Cc.set (Calendar.month, mymonth+j); 
 System.out.println (myyear+ "-" +cc.get (CC). MONTH)); 
 for (int i=0;i<7;i++) { 
  cc.add (cc. MONTH, 1); 
  int mm = Cc.get (CC. MONTH); 
  int mmm=mm==0?12:mm; 
  System.out.println (myyear+ "-" +mmm); 
 } 
} 

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