| Name | Description | Type | Package | Framework |
| ClassChecker | Checks that a POJO is already manipulated or not. | Class | org.apache.felix.ipojo.manipulation | Apache Felix |
| ClassChecker .EnumAttribute | Describes an attribute. | Class | org.apache.felix.ipojo.manipulation.ClassChecker | Apache Felix |
| ClassChecker .SimpleAttribute | Describes a simple attribute. | Class | org.apache.felix.ipojo.manipulation.ClassChecker | Apache Felix |