使用预定义的格式模式

import java.time.LocalDate;

import java.time.LocalDateTime;

import java.time.LocalTime;

import java.time.Month;//来自 时 代 J a v a 公 众 号 - nowjava.com

import java.time.format.DateTimeFormatter;

import static java.time.format.FormatStyle.FULL;

import static java.time.format.FormatStyle.LONG;

import static java.time.format.FormatStyle.MEDIUM;

import static java.time.format.FormatStyle.SHORT;


import java.util.Locale;


public class Main {

  public static void main(String[] args) {

    LocalDate ld = LocalDate.of(2012, Month.APRIL, 19);

    LocalTime lt = LocalTime.of(16, 30, 20);

    LocalDateTime ldt = LocalDateTime.of(ld, lt);


    DateTimeFormatter fmt = DateTimeFormatter.ofLocalizedDate(SHORT);
    /**
     from
    * N o  w  J a v a . c o m - 时  代  Java 
    **/

    System.out.println("Formatter Default Locale: " + fmt.getLocale());

    System.out.println("Short Date: " + fmt.format(ld));


    fmt = DateTimeFormatter.ofLocalizedDate(MEDIUM);

    System.out.println("Medium Date: " + fmt.format(ld));


    fmt = DateTimeFormatter.ofLocalizedDate(LONG);

    System.out.println("Long Date: " + fmt.format(ld));


    fmt = DateTimeFormatter.ofLocalizedDate(FULL);

    System.out.println("Full Date: " + fmt.format(ld));

    

    fmt = DateTimeFormatter.ofLocalizedTime(SHORT); 

    System.out.println("Short Time: " + fmt.format(lt));


    fmt = DateTimeFormatter.ofLocalizedDateTime(SHORT);

    System.out.println("Short Datetime: " + fmt.format(ldt));


    fmt = DateTimeFormatter.ofLocalizedDateTime(MEDIUM);

    System.out.println("Medium Datetime: " + fmt.format(ldt));


    // Use German locale to format the datetime in medius style

    fmt = DateTimeFormatter.ofLocalizedDateTime(MEDIUM)

                           .withLocale(Locale.GERMAN);

    System.out.println("German Medium Datetime: " + fmt.format(ldt));


    // Use Indian(English) locale to format datetime in short style

    fmt = DateTimeFormatter.ofLocalizedDateTime(SHORT)

                            .withLocale(new Locale("en",