枚举使用小例子

public class ProposalRuleFlag {

 public enum RelationType{
  RISKKIND("01");
  private final String value;
  private RelationType(String value) {
   this.value = value;
  }
  public String toString() {
   return this.value;
  }
 };
}

 

//使用

if (relationType.equals(ProposalRuleFlag.RelationType.RISKKIND
    .toString()))