enum使用一例
/** * User: renjunjie * Date: 13-6-25 下午4:43 * Function: */public class AppContants { //政府机构 //public static final Integer ORG_GOVERN = 1; //节能公司 //public static final Integer ORG_ENERGY = 2; //耗能单位 //public static final Integer ORG_UNIT = 3; public static enum ORG_TYPE { ORG_GOVERN("1"), ORG_ENERGY("2"), ORG_UNIT("3"); private String value; private ORG_TYPE(String value){ this.value = value; } private String getValue(){ return value; } public static ORG_TYPE getByName(String name){ for(ORG_TYPE prop : values()){ if(prop.getValue().equals(name)){ return prop; } } throw new IllegalArgumentException(name + " is not a valid PropName"); } }; //中瑞数据库用户名 public static final String ZR_NAME = "zr"; public static final Integer NODE_TYPE_DEVICE = 1; public static final Integer NODE_TYPE_GOVERN = 2; public static final Integer NODE_TYPE_ENERGY = 3; public static final Integer NODE_TYPE_UNIT = 4; /** * 通过组织机构类型获取树形机构节点类型 * @param orgType * @return * @throws com.rixing.energysaving.exception.ServiceException */ public static int getNodeTypeOfOrgType(String orgType) throws ServiceException { int result = -1; ORG_TYPE t = ORG_TYPE.getByName(orgType); switch (t) { case ORG_GOVERN : result = AppContants.NODE_TYPE_GOVERN; break; case ORG_ENERGY: result = AppContants.NODE_TYPE_ENERGY; break; case ORG_UNIT : result = AppContants.NODE_TYPE_UNIT; break; } if(result == -1) { throw new ServiceException("组织机构类型orgtype错误"); } return result; }}?java switch使用enum好像只能在一个类里面