| ByteArrayCounter | Interface for performance counter wrapping byte[] objects. |
| Counter | The base class for a performance counter. |
| LongArrayCounter | Interface for performance counter wrapping long[] objects. |
| LongCounter | Interface for a performance counter wrapping a
long basic type. |
| StringCounter | Interface for a performance counter wrapping a String object. |
| AbstractCounter | |
| Units | Provides a typesafe enumeration for describing units of measurement attribute for instrumentation objects. |
| Variability | Provides a typesafe enumeration for the Variability attribute for instrumentation objects. |