枚举类定义如下：
public enum Status {SCUUESS("1", "成功"), FAILED("2", "失败");private String value;private String desc;public String getValue() {return value;}public void setValue(String value) {this.value = value;}public String getDesc() {return desc;}public void setDesc(String desc) {this.desc = desc;}private Status(String value, String desc) {this.value = value;this.desc = desc;}}
使用的方式如下：
public class StutusTest {public static void main(String[] args) {System.out.println(Status.SCUUESS.getValue());System.out.println(Status.SCUUESS.getDesc());System.out.println(Status.FAILED.getValue());System.out.println(Status.FAILED.getDesc());}}
再比如，我们在操作数据库的时候，通常使用数字保存到数据库中，但是在界面上显示的时候，需要展示其中文意思，南无我们就可以通过下边的方式：
public enum FlightType {OW(1, "单程"), RT(2, "往返");public Integer code;public String desc;FlightType(Integer code, String desc) {this.code = code;this.desc = desc;}public Integer getCode() {return code;}public void setCode(Integer code) {this.code = code;}public String getDesc() {return desc;}public void setDesc(String desc) {this.desc = desc;}public static FlightType getTypeByCode(Integer code) {FlightType defaultType = FlightType.OW;for (FlightType ftype : FlightType.values()) {if (ftype.code == code) {return ftype;}}return defaultType;}public static String getDescByCode(Integer code) {return getTypeByCode(code).desc;}}
这样的话，我们就可以通过getDescByCode方法获得其对应的中文。
另外，参数的个数是可以进行变化的，例如下边：
public enum DatabaseType {unknown(null, null, null,null),mysql("com.mysql.jdbc.Driver", "com.mysql.jdbc.jdbc2.optional.MysqlXADataSource", "select 1",Dialect.MYSQL),h2("org.h2.Driver", "org.h2.jdbcx.JdbcDataSource", "select 1",Dialect.H2),oracle("oracle.jdbc.driver.OracleDriver", "oracle.jdbc.xa.client.OracleXADataSource", "select 1 from dual",Dialect.ORACLE);DatabaseType(String driverClassName, String xaDataSourceClassName, String testQuery,Dialect dialect) {this.driverClassName = driverClassName;this.testQuery = testQuery;this.xaDataSourceClassName = xaDataSourceClassName;this.dialect=dialect;}private final String testQuery;private final String driverClassName;private final String xaDataSourceClassName;private final Dialect dialect;public String getDriverClassName() {return driverClassName;}public String getXaDataSourceClassName() {return xaDataSourceClassName;}public String getTestQuery() {return testQuery;}public Dialect getDialect() {return dialect;}public static DatabaseType fromJdbcUrl(String url) {if (StringUtils.hasLength(url)) {Assert.isTrue(url.startsWith("jdbc"), "URL must start with 'jdbc'");String urlWithoutPrefix = url.substring("jdbc".length()).toLowerCase();for (DatabaseType driver : values()) {String prefix = ":" + driver.name().toLowerCase() + ":";if (driver != unknown && urlWithoutPrefix.startsWith(prefix)) {return driver;}}}return unknown;}}
