Program: 173971
Project: 173971
Buggy source:
/** 
 * @param bean to be converted to text string
 * @return the text string
 * @throws ReflectiveOperationException when there is any exception during conversion.
 */
private <T>String doToText(final T bean) throws ReflectiveOperationException {
  @SuppressWarnings("String_Node_Str") Class<T> clazz=(Class<T>)bean.getClass();
  if (isBean(clazz)) {
    Field[] fields=clazz.getDeclaredFields();
    StringBuilder sb=new StringBuilder();
    Method method=null;
    String fieldName=null;
    Object fieldValue=null;
    Field f=null;
    for (int i=0; i < fields.length; i++) {
      f=fields[i];
      fieldName=f.getName().substring(0,1).toUpperCase() + f.getName().substring(1);
      f.setAccessible(true);
      fieldValue=f.get(bean);
      sb.append(fieldName);
      sb.append(associate);
      if (null != fieldValue) {
        if (0 == i && Iterable.class.isAssignableFrom(f.getType())) {
          Iterator<?> it=((Iterable<?>)fieldValue).iterator();
          while (it.hasNext()) {
            try {
              sb.append(doToText(it.next()) + linebreak);
            }
 catch (            Exception e) {
              if (e instanceof ReflectiveOperationException) {
                throw (ReflectiveOperationException)e;
              }
 else {
                throw new ReflectiveOperationException(e.getMessage());
              }
            }
          }
        }
 else {
          try {
            sb.append(baseTypeConvertor.toString(fieldValue));
          }
 catch (          Exception e) {
            if (e instanceof ReflectiveOperationException) {
              throw (ReflectiveOperationException)e;
            }
 else {
              throw new ReflectiveOperationException(e.getMessage());
            }
          }
        }
      }
      if (i < (fields.length - 1)) {
        sb.append(separate);
      }
    }
    return sb.toString();
  }
 else {
    throw new ReflectiveOperationException("String_Node_Str");
  }
}

Fixed version (ground truth):
/** 
 * @param bean to be converted to text string
 * @return the text string
 * @throws ReflectiveOperationException when there is any exception during conversion.
 */
private <T>String doToText(final T bean) throws ReflectiveOperationException {
  @SuppressWarnings("String_Node_Str") Class<T> clazz=(Class<T>)bean.getClass();
  if (isBean(clazz)) {
    Field[] fields=clazz.getDeclaredFields();
    StringBuilder sb=new StringBuilder();
    Method method=null;
    String fieldName=null;
    Object fieldValue=null;
    Field f=null;
    for (int i=0; i < fields.length; i++) {
      f=fields[i];
      fieldName=f.getName().substring(0,1).toUpperCase() + f.getName().substring(1);
      f.setAccessible(true);
      fieldValue=f.get(bean);
      if (withname) {
        sb.append(fieldName);
        sb.append(associator);
      }
      if (null != fieldValue) {
        if (0 == i && Iterable.class.isAssignableFrom(f.getType())) {
          Iterator<?> it=((Iterable<?>)fieldValue).iterator();
          while (it.hasNext()) {
            try {
              sb.append(doToText(it.next()) + linebreak);
            }
 catch (            Exception e) {
              if (e instanceof ReflectiveOperationException) {
                throw (ReflectiveOperationException)e;
              }
 else {
                throw new ReflectiveOperationException(e.getMessage());
              }
            }
          }
        }
 else {
          try {
            sb.append(baseTypeConvertor.toString(fieldValue));
          }
 catch (          Exception e) {
            if (e instanceof ReflectiveOperationException) {
              throw (ReflectiveOperationException)e;
            }
 else {
              throw new ReflectiveOperationException(e.getMessage());
            }
          }
        }
      }
      if (i < (fields.length - 1)) {
        sb.append(separator);
      }
    }
    return sb.toString();
  }
 else {
    throw new ReflectiveOperationException("String_Node_Str");
  }
}