| Name | Description | Type | Package | Framework |
| ArraySorter | A singleton utility class that sorts an array of objects. | Class | sun.tools.hat.internal.util | Code Trails |
| Comparer | Base class for comparison of two objects. | Class | sun.tools.hat.internal.util | Code Trails |
| CompositeEnumeration | Class | sun.tools.hat.internal.util | Code Trails | |