If the close method is not called, the cleaning action is called by the Cleaner when the CleaningExample instance has become phantom reachable. If the CleaningExample is used in a try-finally block then the close method calls the cleaning action. The thread runs until all registered cleaning actions have completed and the cleaner itself is reclaimed by the garbage collector. The cleaner and other cleaning actions are not affected by exceptions in a cleaning action. All exceptions thrown by the cleaning action are ignored. The execution of the cleaning action is performed by a thread associated with the cleaner. If so, the object will not become phantom reachable and the cleaning action will not be invoked automatically. Note that the cleaning action must not refer to the object being registered. The cleaning action is a Runnable to be invoked at most once when the object has become phantom reachable unless it has already been explicitly cleaned. The most efficient use is to explicitly invoke the clean method when the object is closed or no longer needed. Registering an object reference and corresponding cleaning action returns a Cleanable. The cleaner uses PhantomReference and ReferenceQueue to be notified when the reachability changes.Įach cleaner operates independently, managing the pending cleaning actions and handling threading and termination when the cleaner is no longer in use. In an interview with the BBC in 2001, Loach stated that thousands of cleaners from around 30 countries have since contacted him with tales similar to the one told in the film.Ĭleaning actions are registered to run after the cleaner is notified that the object has become phantom reachable. The 2000 film Bread and Roses by British director Ken Loach depicted the struggle of cleaners in Los Angeles, California, for better pay and working conditions and for the right to join a union. The exposure of a cleaner to hazards depends on the activity performed and the situation for example: allergens, dust, biohazards, fall, possibility of contact with electric shock, slipping on a slippery surface, so safety equipment should be adapted to the situation. However, in the other hand in some cases, cleaners are checked against criminal records. Cleaners specialize in a specific cleaning sector or even a specific task in a cleaning sector, and one cannot expect a window cleaner to be able or willing to clean a carpet.Ĭleaning is sometimes done by convicts for rehabilitation or leniency purposes. Depending on the task, even these categories can be subdivided into, for example, end-of-lease cleaning, carpet cleaning, upholstery cleaning, window cleaning, car cleaning services etc. For example, cleaning an office space requires the services of a commercial cleaner, whereas cleaning a house requires a residential cleaner or residential cleaning service. The cleaning industry is quite big as different types of cleaning are required for different objects and different properties. They may clean offices at night or houses during the workday. Cleaning operatives often work when the people who otherwise occupy the space are not around. an air cleaner.Ĭleaning operatives may specialize in cleaning particular things or places, such as window cleaners. oven cleaner and device used to clean e.g. Word cleaner also means: "substance used for cleaning" e.g. Cleaner in Cambridge English dictionary means: "a person whose job is to clean houses, offices, public places, etc.:", in Collins dictionary: "A cleaner is someone who is employed to clean the rooms and furniture inside a building." However, a cleaner does not always have to be employed and does not have to perform work for pay an example would be socially and charity cleaning for example free forest cleanup from garbage so the definitions of the cleaner word depend on the author.
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