Package org.checkerframework.checker.units.qual

Annotation Type kN

@Documented
@Retention(RUNTIME)
@Target({TYPE_USE,TYPE_PARAMETER})
@SubtypeOf(Force.class)
@UnitsMultiple(quantity=N.class,
               prefix=kilo)
public @interface kN

Kilonewton.

See the Checker Framework Manual:

Units Checker