Module jdk.jfr
Package jdk.jfr

# Annotation Interface Timespan

@Retention(RUNTIME) @Target({FIELD,TYPE,METHOD}) public @interface Timespan
Event field annotation, specifies that the value is a duration.

Since:
  9

## Optional Element Summary

Optional Elements
Modifier and Type
Optional Element
Description
`String`
`value`
Returns the unit of measure for the time span.

## Field Summary

Fields
Modifier and Type
Field
Description
`static final String`
`MICROSECONDS`
Unit for microseconds.
`static final String`
`MILLISECONDS`
Unit for milliseconds.
`static final String`
`NANOSECONDS`
Unit for nanoseconds.
`static final String`
`SECONDS`
Unit for seconds.
`static final String`
`TICKS`
Unit for ticks.

## Field Details

### TICKS

static final String TICKS
Unit for ticks.

See Also:
  - Constant Field Values

### SECONDS

static final String SECONDS
Unit for seconds.

See Also:
  - Constant Field Values

### MILLISECONDS

static final String MILLISECONDS
Unit for milliseconds.

See Also:
  - Constant Field Values

### NANOSECONDS

static final String NANOSECONDS
Unit for nanoseconds.

See Also:
  - Constant Field Values

### MICROSECONDS

static final String MICROSECONDS
Unit for microseconds.

See Also:
  - Constant Field Values

## Element Details

### value

String value
Returns the unit of measure for the time span.

By default, the unit is nanoseconds.

Returns:
  the time span unit, default `NANOSECONDS`, not `null`

Default:
  "NANOSECONDS"