Java Reference
In-Depth Information
05/30/2012
05/30/2012 at 17:30:12
Listing 12-24 shows how to use different patterns to format dates and times.
Listing 12-24.
Using Patterns to Format Dates and Times
// FormattingDateTime.java
package com.jdojo.datetime;
import java.time.LocalDate;
import java.time.LocalTime;
import java.time.Month;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.Temporal;
import java.util.Locale;
public class FormattingDateTime {
public static void main(String[] args) {
LocalDate ld = LocalDate.of(2012, Month.APRIL, 30);
System.out.println("Formatting date: " + ld);
format(ld, "M/d/yyyy");
format(ld, "MM/dd/yyyy");
format(ld, "MMM dd, yyyy");
format(ld, "MMMM dd, yyyy");
format(ld, "EEEE, MMMM dd, yyyy");
format(ld, "'Month' q 'in' QQQ");
format(ld, "[MM-dd-yyyy][' at' HH:mm:ss]");
LocalTime lt = LocalTime.of(16, 30, 5, 78899);
System.out.println("\nFormatting time:" + lt);
format(lt, "HH:mm:ss");
format(lt, "KK:mm:ss a");
format(lt, "[MM-dd-yyyy][' at' HH:mm:ss]");
ZoneId usCentral = ZoneId.of("America/Chicago");
ZonedDateTime zdt = ZonedDateTime.of(ld, lt, usCentral);
System.out.println("\nFormatting zoned datetime:" + zdt);
format(zdt, "MM/dd/yyyy HH:mm:ssXXX");
format(zdt, "MM/dd/yyyy VV");
format(zdt, "[MM-dd-yyyy][' at' HH:mm:ss]");
}
public static void format(Temporal co, String pattern) {
DateTimeFormatter fmt = DateTimeFormatter.ofPattern(pattern, Locale.US);
String str = fmt.format(co);
System.out.println(pattern + ": " + str);
}
}
