в 17:44, 31 мая 2010

2010-05-31T17:44:27Z

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2010-05-31T15:29:03Z

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== Convert Date to String ==



<source lang="java">
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class Main {
public static void main(String[] args) {
DateFormat df = new SimpleDateFormat("MM/dd/yyyy");
Date today = Calendar.getInstance().getTime();
String reportDate = df.format(today);
System.out.println("Report Date: " + reportDate);
}
}</source>



== Convert string date to long value ==



<source lang="java">
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Main {
public static void main(String[] args) throws Exception {
String today = "21/12/2007";
DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
Date date = formatter.parse(today);
long dateInLong = date.getTime();
System.out.println("date = " + date);
System.out.println("dateInLong = " + dateInLong);
}
}</source>



== DateFormat.getTimeInstance(DateFormat.DEFAULT, Locale.CANADA).format(new Date()) ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
public class Main {
public static void main(String[] argv) throws Exception {
String s = DateFormat.getTimeInstance(DateFormat.DEFAULT, Locale.CANADA).format(new Date());
System.out.println(s);
}
}</source>



== DateFormat.getTimeInstance(DateFormat.FULL, Locale.CANADA).format(new Date()) ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
public class Main {
public static void main(String[] argv) throws Exception {
String s = DateFormat.getTimeInstance(DateFormat.FULL, Locale.CANADA).format(new Date());
System.out.println(s);
}
}</source>



== DateFormat.getTimeInstance(DateFormat.LONG, Locale.CANADA).format(new Date()) ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
public class Main {
public static void main(String[] argv) throws Exception {
String s = DateFormat.getTimeInstance(DateFormat.LONG, Locale.CANADA).format(new Date());
System.out.println(s);
}
}</source>



== DateFormat.getTimeInstance(DateFormat.MEDIUM, Locale.CANADA).format(new Date()) ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
public class Main {
public static void main(String[] argv) throws Exception {
String s = DateFormat.getTimeInstance(DateFormat.MEDIUM, Locale.CANADA).format(new Date());
System.out.println(s);
}
}</source>



== DateFormat.SHORT ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
public class Main {
public static void main(String[] args) {
Date date = new Date();
String strDate = DateFormat.getDateInstance(DateFormat.SHORT).format(date);
System.out.println(strDate);
}
}</source>



== Find the current date format ==



<source lang="java">
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Locale;
public class Main {
public static void main(String args[]) {
SimpleDateFormat df = (SimpleDateFormat) DateFormat.getDateInstance(DateFormat.SHORT);
System.out.println("The short date format is " + df.toPattern());
Locale loc = Locale.ITALY;
df = (SimpleDateFormat) DateFormat.getDateInstance(DateFormat.SHORT, loc);
System.out.println("The short date format is " + df.toPattern());
}
}</source>



== Format a date-time value:short, medium and long ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
public class Main {
public static void main(String[] args) {
Date date = new Date();
// Format date in a short format
String today = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT).format(date);
System.out.println("Today " + today);
// Format date in a medium format
today = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM).format(date);
System.out.println("Today " + today);
// Format date in a long format
today = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG).format(date);
System.out.println("Today " + today);
}
}</source>



== Format date in Default format ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
public class Main {
public static void main(String[] args) {
Date date = new Date();
String strDate = DateFormat.getDateInstance(DateFormat.DEFAULT).format(date);
System.out.println(strDate);
}
}</source>



== Format date in Full format ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
public class Main {
public static void main(String[] args) {
Date date = new Date();

String strDate = DateFormat.getDateInstance(DateFormat.FULL).format(date);
System.out.println(strDate);
}
}</source>



== Format date in Long format ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
public class Main {
public static void main(String[] args) {
Date date = new Date();
String strDate = DateFormat.getDateInstance(DateFormat.LONG).format(date);
System.out.println(strDate);
}
}</source>



== Format date in Medium format ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
public class Main {
public static void main(String[] args) {
Date date = new Date();
String strDate = DateFormat.getDateInstance(DateFormat.MEDIUM).format(date);
System.out.println(strDate);
}
}</source>



== Formatting and Parsing a Time for a Locale: specify the locale when creating the SimpleDateFormat object. ==



<source lang="java">
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
public class Main {
public static void main(String[] argv) throws Exception {
Locale locale = Locale.FRENCH;
DateFormat formatter = new SimpleDateFormat("HH:mm:ss zzzz", locale);
String s = formatter.format(new Date());
System.out.println(s);
}
}</source>



== Formatting and Parsing a Time for a Locale Using Default Formats ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
public class Main {
public static void main(String[] argv) throws Exception {
Locale locale = Locale.ITALIAN;
Date date = new Date();
String s = DateFormat.getTimeInstance(DateFormat.SHORT, locale).format(date);
System.out.println(s);
}
}</source>



== Format with a default format ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
public class Main {
public static void main(String[] argv) throws Exception {
String s = DateFormat.getTimeInstance(DateFormat.MEDIUM, Locale.CANADA).format(new Date());
System.out.println(s);
}
}</source>



== Parse date string input with DateFormat.getTimeInstance(DateFormat.DEFAULT, Locale.CANADA) ==



<source lang="java">
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
public class Main {
public static void main(String[] argv) throws Exception {
Date date = DateFormat.getTimeInstance(DateFormat.DEFAULT, Locale.CANADA).parse("21.33.03");
System.out.println(date);
}
}</source>



== Validate a date Using DateFormat ==



<source lang="java">
import java.text.DateFormat;
public class Main {
public static boolean isValidDateStr(String date) throws Exception {
DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
df.setLenient(false);
df.parse(date);
return true;
}
public static void main(String[] args) throws Exception{
System.out.println(isValidDateStr("1900-13-12"));
}
}</source>

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в 17:44, 31 мая 2010

Admin: 1 версия