Locale locale = Locale.getDefault()

public static final Locale CANADA
public static final Locale CANADA_FRENCH
public static final Locale CHINA
public static final Locale CHINESE
public static final Locale ENGLISH
public static final Locale FRANCE
public static final Locale FRENCH
public static final Locale GERMAN
public static final Locale GERMANY
public static final Locale ITALIAN
public static final Locale ITALY
public static final Locale JAPAN
public static final Locale JAPANESE
public static final Locale KOREA
public static final Locale KOREAN
public static final Locale PRC
public static final Locale ROOT
public static final Locale SIMPLIFIED_CHINESE
public static final Locale TAIWAN
public static final Locale TRADITIONAL_CHINESE
public static final Locale UK
public static final Locale US

Locale locale = Locale.SIMPLIFIED_CHINESE

Locale(String language)
Locale(String language, String country)
Locale(String language, String country, String variant)

Locale local = new Locale("zh", "CN");

Locale[] ls = Locale.getAvailableLocales();

for (Locale locale:ls) {
  System.out.println("locale :"+locale);
}

All Locales: ja_JP, es_PE, en, ja_JP_JP, es_PA, sr_BA, mk, es_GT, ar_AE, no_NO, sq_AL, bg, ar_IQ, ar_YE, hu, pt_PT, el_CY, ar_QA, mk_MK, sv, de_CH, en_US, fi_FI, is, cs, en_MT, sl_SI, sk_SK, it, tr_TR, zh, th, ar_SA, no, en_GB, sr_CS, lt, ro, en_NZ, no_NO_NY, lt_LT, es_NI, nl, ga_IE, fr_BE, es_ES, ar_LB, ko, fr_CA, et_EE, ar_KW, sr_RS, es_US, es_MX, ar_SD, in_ID, ru, lv, es_UY, lv_LV, iw, pt_BR, ar_SY, hr, et, es_DO, fr_CH, hi_IN, es_VE, ar_BH, en_PH, ar_TN, fi, de_AT, es, nl_NL, es_EC, zh_TW, ar_JO, be, is_IS, es_CO, es_CR, es_CL, ar_EG, en_ZA, th_TH, el_GR, it_IT, ca, hu_HU, fr, en_IE, uk_UA, pl_PL, fr_LU, nl_BE, en_IN, ca_ES, ar_MA, es_BO, en_AU, sr, zh_SG, pt, uk, es_SV, ru_RU, ko_KR, vi, ar_DZ, vi_VN, sr_ME, sq, ar_LY, ar, zh_CN, be_BY, zh_HK, ja, iw_IL, bg_BG, in, mt_MT, es_PY, sl, fr_FR, cs_CZ, it_CH, ro_RO, es_PR, en_CA, de_DE, ga, de_LU, de, es_AR, sk, ms_MY, hr_HR, en_SG, da, mt, pl, ar_OM, tr, th_TH_TH, el, ms, sv_SE, da_DK, es_HN

Locale locale = new Locale("ja", "JP");

Locale locale = new Locale("en");

// Locale的构造函数
Locale(String language)
Locale(String language, String country)
Locale(String language, String country, String variant)

Object             clone()
boolean           equals(Object object)
static Locale[]       getAvailableLocales()
String             getCountry()
static Locale         getDefault()
String             getDisplayCountry(Locale locale)
final String         getDisplayCountry()
final String         getDisplayLanguage()
String             getDisplayLanguage(Locale locale)
String             getDisplayName(Locale locale)
final String         getDisplayName()
final String         getDisplayVariant()
String             getDisplayVariant(Locale locale)
String             getISO3Country()
String             getISO3Language()
static String[]       getISOCountries()
static String[]       getISOLanguages()
String             getLanguage()
String             getVariant()
synchronized int       hashCode()
synchronized static void   setDefault(Locale locale)
final String         toString()

import java.util.Locale;
import java.util.Date;
import java.util.Calendar;
import java.text.SimpleDateFormat;
import java.text.DateFormat;

/**
 * Locale 的测试程序
 */
public class LocaleTest {

  public static void main(String[] args) {
    // 2种不同的Locale的创建方法
    testDiffDateLocales();

    // 显示所有的Locales
    testAllLocales();
  }


  /**
   * 2种不同的Locale的创建方法
   */
  private static void testDiffDateLocales() {
    // date为2013-09-19 14:22:30
    Date date = new Date(113, 8, 19, 14, 22, 30);

    // 创建“简体中文”的Locale
    Locale localeCN = Locale.SIMPLIFIED_CHINESE;
    // 创建“英文/美国”的Locale
    Locale localeUS = new Locale("en", "US");

    // 获取“简体中文”对应的date字符串
    String cn = DateFormat.getDateInstance(DateFormat.MEDIUM, localeCN).format(date);
    // 获取“英文/美国”对应的date字符串
    String us = DateFormat.getDateInstance(DateFormat.MEDIUM, localeUS).format(date);

    System.out.printf("cn=%snus=%sn", cn, us);
  }

  /**
   * 显示所有的Locales
   */
  private static void testAllLocales() {
    Locale[] ls = Locale.getAvailableLocales();

    System.out.print("All Locales: ");
    for (Locale locale:ls) {
      System.out.printf(locale+", ");
    }
    System.out.println();
  }
}

ResourceBundle rb = ResourceBundle.getBundle(“res.MessageBundle”, currentLocale);

MessageBundle_zh_CN.properties;MessageBundle_en_US.properteis;

resourceName_language_country.properteis;

//接受客户端传过来的语言请求信息 
String language = request.getParameter(“myLanguage”); 
 
//定义语言地区信息 
Locale currentLocale = null; 
 
//根据不同的请求创建不同的语言环境信息 
if (“zh”.equals(language)) { 
  currentLocale = new Locale(“zh”, “CN”); 
} else if (“en”.equals(language)) { 
  currentLocale = new Locale(“en”, “US”); 
} 
 
//…… 
//将session中的信息更改掉  
this.setLocale(request, currentLocale); 
 
//当然，在页面显示资源文件信息的时候采用如下这种方式： 
 
//<bean:message key=”key” />