Annotation (Zipkin Core Library 2.23.0 API)

java.lang.Object
- zipkin2.Annotation

All Implemented Interfaces:

Serializable, Comparable<Annotation>
```
public final class Annotation
extends Object
implements Comparable<Annotation>, Serializable
```
Associates an event that explains latency with a timestamp.
Unlike log statements, annotations are often codes: Ex. cache.miss.

See Also:

Serialized Form

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`compareTo(Annotation that)`	Compares by `timestamp`, then `value`.
`static Annotation`	`create(long timestamp, String value)`
`boolean`	`equals(Object o)`
`int`	`hashCode()`
`long`	`timestamp()`	Microseconds from epoch.
`String`	`toString()`
`String`	`value()`	Usually a short tag indicating an event, like `cache.miss` or `error`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Method Detail
  - create
```
public static Annotation create(long timestamp,
                                String value)
```
  - timestamp
```
public long timestamp()
```
    Microseconds from epoch.
    This value should be set directly by instrumentation, using the most precise value possible. For example, gettimeofday or multiplying System.currentTimeMillis() by 1000.
  - value
```
public String value()
```
    Usually a short tag indicating an event, like cache.miss or error
  - compareTo
```
public int compareTo(Annotation that)
```
    Compares by timestamp, then value.
    
    Specified by:
    
    compareTo in interface Comparable<Annotation>
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object