创建自定义的Java注解类的方法

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface ReconField {
 
  /**
   * Value indicates whether or not the values from the specified sources should be compared or will be used to display values or reference within a rule.
   *
   * @return The value if sources should be compared, defaults to true.
   */
  boolean compareSources() default true;
 
  /**
   * Value indicates the format that should be used to display the value in the report.
   *
   * @return The format specified, defaulting to native.
   */
  ReconDisplayFormat displayFormat() default ReconDisplayFormat.NATIVE;
 
  /**
   * Value indicates the ID value of the field used for matching source values up to the field.
   *
   * @return The ID of the field.
   */
  String id();
 
  /**
   * Value indicates the label that should be displayed in the report for the field.
   *
   * @return The label value specified, defaults to an empty string.
   */
  String label() default "";
 
  /**
   * Value that indicates the sources that should be compared for differences.
   *
   * @return The list of sources for comparison.
   */
  ReconSource[] sourcesToCompare() default {};
 
}

 
@ReconField(id = CUSTOMER_ID, label = "Customer ID")
private String customerId;

@ReconField(id = NAME, label = "NAME", compareSources = false)
private String name;

@ReconField(id = PRIVATE_PLACEMENT_FLAG, label = "PRIVATE PLACEMENT FLAG", sourcesToCompare ={ ReconSource.LEGACY, ReconSource.PACE })
private String privatePlacementFlag;

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface ReconCustomRule {
 
/**
* Value indicates the parameters used to instantiate a custom rule processor, the default value is no parameters.
*
* @return The String[] of parameters to instantiate a custom rule processor.
*/
String[] params() default {};
 
/**
* Value indicates the class of the custom rule processor to be used in comparing the values from each source.
*
* @return The class of the custom rule processor.
*/
Class<?> processor() default DefaultReconRule.class;
 
}

@ReconField(id = STREET_CUSIP, label = "STREET CUSIP", compareSources = false)
@ReconCustomRule(processor = SkipNonUSExchangeComparisonRule.class)
private String streetCusip;

@ReconField(id = USD_MKT_CAP, label = "MARKET CAP USD", displayFormat = ReconDisplayFormat.NUMERIC_WHOLE, sourcesToCompare =
{ ReconSource.LEGACY, ReconSource.PACE, ReconSource.BOB_PRCM })
@ReconCustomRule(processor = ToleranceAmountRule.class, params = { "10000" })
private BigDecimal usdMktCap;