```
@Retention(RUNTIME)
@Target({PARAMETER,ANNOTATION_TYPE})
public @interface Clear
```
Indicates that the temporary native memory allocated for an @Out paramneter should be cleared before passing to the native function.
By default, parameters that are annotated as @Out only do not clear the data in the temporary native memory area allocated when a java heap object is passed in as the parameter, so the memory passed to the native function is full of garbage data. After the native method returns, the native memory is copied back to java, which is usually not a problem, since the native function will have updated the memory with valid data. However, if the native function fails, the garbage data that was in the temporary native memory will be copied back to java.

See Also:

In, Out

Annotation Type Clear