一个标准的JAVA枚举类

约定不等于承诺〃 2022-06-10 12:18 100阅读 0赞

## **一个标准的JAVA枚举类（来源是LMAX公司的一个提供银行的小项目）** ##

/** * Copyright 2013 Marc Wrobel (marc.wrobel@gmail.com) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
 package fr.marcwrobel.jbanking;
 
 /** * The countries having an ISO 3166-1-alpha-2 code. * * * Please be advised that this list is current as of 2013/05/26. Up-to-date list can be found for free on the <a href="http://www.iso.org/iso/home/standards/country_codes.htm"> * International Organization for Standardization website</a>. * * * @author Marc Wrobel * @see <a href="http://www.iso.org/iso/home/standards/country_codes.htm">http://www.iso.org/iso/home/standards/country_codes.htm</a> * @since 1.0 */
 public enum IsoCountry {
 
 AFGHANISTAN("AF"),
 ALAND_ISLANDS("AX"),
 ALBANIA("AL"),
 ALGERIA("DZ"),
 AMERICAN_SAMOA("AS"),
 ANDORRA("AD"),
 ANGOLA("AO"),
 ANGUILLA("AI"),
 ANTARCTICA("AQ"),
 ANTIGUA_AND_BARBUDA("AG"),
 ARGENTINA("AR"),
 ARMENIA("AM"),
 ARUBA("AW"),
 AUSTRALIA("AU"),
 AUSTRIA("AT"),
 AZERBAIJAN("AZ"),
 BAHAMAS("BS"),
 BAHRAIN("BH"),
 BANGLADESH("BD"),
 BARBADOS("BB"),
 BELARUS("BY"),
 BELGIUM("BE"),
 BELIZE("BZ"),
 BENIN("BJ"),
 BERMUDA("BM"),
 BHUTAN("BT"),
 BOLIVIA("BO"),
 BONAIRE("BQ"),
 BOSNIA_AND_HERZEGOVINA("BA"),
 BOTSWANA("BW"),
 BOUVET_ISLAND("BV"),
 BRAZIL("BR"),
 BRITISH_INDIAN_OCEAN_TERRITORY("IO"),
 BRITISH_VIRGIN_ISLANDS("VG"),
 BRUNEI_DARUSSALAM("BN"),
 BULGARIA("BG"),
 BURKINA_FASO("BF"),
 BURUNDI("BI"),
 CAMBODIA("KH"),
 CAMEROON("CM"),
 CANADA("CA"),
 CAPE_VERDE("CV"),
 CAYMAN_ISLANDS("KY"),
 CENTRAL_AFRICAN_REPUBLIC("CF"),
 CHAD("TD"),
 CHILE("CL"),
 CHINA("CN"),
 CHRISTMAS_ISLAND("CX"),
 COCOS_ISLANDS("CC"),
 COLOMBIA("CO"),
 COMOROS("KM"),
 CONGO("CG"),
 COOK_ISLANDS("CK"),
 COSTA_RICA("CR"),
 COTE_D_IVOIRE("CI"),
 CROATIA("HR"),
 CUBA("CU"),
 CURACAO("CW"),
 CYPRUS("CY"),
 CZECH_REPUBLIC("CZ"),
 DENMARK("DK"),
 DJIBOUTI("DJ"),
 DOMINICA("DM"),
 DOMINICAN_REPUBLIC("DO"),
 ECUADOR("EC"),
 EGYPT("EG"),
 EL_SALVADOR("SV"),
 EQUATORIAL_GUINEA("GQ"),
 ERITREA("ER"),
 ESTONIA("EE"),
 ETHIOPIA("ET"),
 FALKLAND_ISLANDS("FK"),
 FAROE_ISLANDS("FO"),
 FIJI("FJ"),
 FINLAND("FI"),
 FRANCE("FR"),
 FRENCH_GUIANA("GF"),
 FRENCH_POLYNESIA("PF"),
 FRENCH_SOUTHERN_TERRITORIES("TF"),
 GABON("GA"),
 GAMBIA("GM"),
 GEORGIA("GE"),
 GERMANY("DE"),
 GHANA("GH"),
 GIBRALTAR("GI"),
 GREECE("GR"),
 GREENLAND("GL"),
 GRENADA("GD"),
 GUADELOUPE("GP"),
 GUAM("GU"),
 GUATEMALA("GT"),
 GUERNSEY("GG"),
 GUINEA("GN"),
 GUINEA_BISSAU("GW"),
 GUYANA("GY"),
 HAITI("HT"),
 HEARD_ISLAND_AND_MCDONALD_ISLANDS("HM"),
 HONDURAS("HN"),
 HONG_KONG("HK"),
 HUNGARY("HU"),
 ICELAND("IS"),
 INDIA("IN"),
 INDONESIA("ID"),
 IRAN("IR"),
 IRAQ("IQ"),
 IRELAND("IE"),
 ISLE_OF_MAN("IM"),
 ISRAEL("IL"),
 ITALY("IT"),
 JAMAICA("JM"),
 JAPAN("JP"),
 JERSEY("JE"),
 JORDAN("JO"),
 KAZAKHSTAN("KZ"),
 KENYA("KE"),
 KIRIBATI("KI"),
 KUWAIT("KW"),
 KYRGYZSTAN("KG"),
 LAO_PEOPLES_DEMOCRATIC_REPUBLIC("LA"),
 LATVIA("LV"),
 LEBANON("LB"),
 LESOTHO("LS"),
 LIBERIA("LR"),
 LIBYA("LY"),
 LIECHTENSTEIN("LI"),
 LITHUANIA("LT"),
 LUXEMBOURG("LU"),
 MACAO("MO"),
 MACEDONIA("MK"),
 MADAGASCAR("MG"),
 MALAWI("MW"),
 MALAYSIA("MY"),
 MALDIVES("MV"),
 MALI("ML"),
 MALTA("MT"),
 MARSHALL_ISLANDS("MH"),
 MARTINIQUE("MQ"),
 MAURITANIA("MR"),
 MAURITIUS("MU"),
 MAYOTTE("YT"),
 MEXICO("MX"),
 MICRONESIA("FM"),
 MOLDOVA("MD"),
 MONACO("MC"),
 MONGOLIA("MN"),
 MONTENEGRO("ME"),
 MONTSERRAT("MS"),
 MOROCCO("MA"),
 MOZAMBIQUE("MZ"),
 MYANMAR("MM"),
 NAMIBIA("NA"),
 NAURU("NR"),
 NEPAL("NP"),
 NETHERLANDS("NL"),
 NEW_CALEDONIA("NC"),
 NEW_ZEALAND("NZ"),
 NICARAGUA("NI"),
 NIGER("NE"),
 NIGERIA("NG"),
 NIUE("NU"),
 NORFOLK_ISLAND("NF"),
 NORTHERN_MARIANA_ISLANDS("MP"),
 NORTH_KOREA("KP"),
 NORWAY("NO"),
 OMAN("OM"),
 PAKISTAN("PK"),
 PALAU("PW"),
 PALESTINE("PS"),
 PANAMA("PA"),
 PAPUA_NEW_GUINEA("PG"),
 PARAGUAY("PY"),
 PERU("PE"),
 PHILIPPINES("PH"),
 PITCAIRN("PN"),
 POLAND("PL"),
 PORTUGAL("PT"),
 PUERTO_RICO("PR"),
 QATAR("QA"),
 REUNION("RE"),
 ROMANIA("RO"),
 RUSSIAN_FEDERATION("RU"),
 RWANDA("RW"),
 SAINT_BARTHELEMY("BL"),
 SAINT_HELENA("SH"),
 SAINT_KITTS_AND_NEVIS("KN"),
 SAINT_LUCIA("LC"),
 SAINT_MARTIN("MF"),
 SAINT_PIERRE_AND_MIQUELON("PM"),
 SAINT_VINCENT_AND_THE_GRENADINES("VC"),
 SAMOA("WS"),
 SAN_MARINO("SM"),
 SAO_TOME_AND_PRINCIPE("ST"),
 SAUDI_ARABIA("SA"),
 SENEGAL("SN"),
 SERBIA("RS"),
 SEYCHELLES("SC"),
 SIERRA_LEONE("SL"),
 SINGAPORE("SG"),
 SINT_MAARTEN("SX"),
 SLOVAKIA("SK"),
 SLOVENIA("SI"),
 SOLOMON_ISLANDS("SB"),
 SOMALIA("SO"),
 SOUTH_AFRICA("ZA"),
 SOUTH_GEORGIA_AND_THE_SOUTH_SANDWICH_ISLANDS("GS"),
 SOUTH_KOREA("KR"),
 SOUTH_SUDAN("SS"),
 SPAIN("ES"),
 SRI_LANKA("LK"),
 SUDAN("SD"),
 SURINAME("SR"),
 SVALBARD_AND_JAN_MAYEN("SJ"),
 SWAZILAND("SZ"),
 SWEDEN("SE"),
 SWITZERLAND("CH"),
 SYRIAN_ARAB_REPUBLIC("SY"),
 TAIWAN("TW"),
 TAJIKISTAN("TJ"),
 TANZANIA("TZ"),
 THAILAND("TH"),
 THE_DEMOCRATIC_REPUBLIC_OF_THE_CONGO("CD"),
 TIMOR_LESTE("TL"),
 TOGO("TG"),
 TOKELAU("TK"),
 TONGA("TO"),
 TRINIDAD_AND_TOBAGO("TT"),
 TUNISIA("TN"),
 TURKEY("TR"),
 TURKMENISTAN("TM"),
 TURKS_AND_CAICOS_ISLANDS("TC"),
 TUVALU("TV"),
 UGANDA("UG"),
 UKRAINE("UA"),
 UNITED_ARAB_EMIRATES("AE"),
 UNITED_KINGDOM("GB"),
 UNITED_STATES("US"),
 UNITED_STATES_MINOR_OUTLYING_ISLANDS("UM"),
 URUGUAY("UY"),
 US_VIRGIN_ISLANDS("VI"),
 UZBEKISTAN("UZ"),
 VANUATU("VU"),
 VATICAN_CITY_STATE("VA"),
 VENEZUELA("VE"),
 VIET_NAM("VN"),
 WALLIS_AND_FUTUNA("WF"),
 WESTERN_SAHARA("EH"),
 YEMEN("YE"),
 ZAMBIA("ZM"),
 ZIMBABWE("ZW");
 
 private final String code;
 
 private IsoCountry(String code) {
 this.code = code;
 }
 
 /** * Returns this country ISO 3166-1-alpha-2 code. * * @return a non null and 2 characters length string */
 public String getCode() {
 return code;
 }
 
 /** * Translate the given ISO 3166-1-alpha-2 code to an IsoCountry. * * This method is not case sensitive. * * @param code A non-null String. * @return the country having the given ISO 3166-1-alpha-2 code, or null if it does not exist */
 public static IsoCountry fromCode(String code) {
 String cleanedCode = (code == null ? null : code.toUpperCase());
 
 if (cleanedCode == null || cleanedCode.length() != 2) {
 return null;
 }
 
 for (IsoCountry country : values()) {
 if (country.getCode().equals(cleanedCode)) {
 return country;
 }
 }
 
 return null;
 }
 
 }