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Cleaning actions are registered to run after the cleaner is notified that the object has become phantom reachable. The cleaner uses PhantomReference and ReferenceQueue to be notified when the reachability changes.


Each cleaner operates independently, managing the pending cleaning actions and handling threading and termination when the cleaner is no longer in use. Registering an object reference and corresponding cleaning action returns a Cleanable. The most efficient use is to explicitly invoke the clean method when the object is closed or no longer needed. 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. Note that the cleaning action must not refer to the object being registered. If so, the object will not become phantom reachable and the cleaning action will not be invoked automatically.

The execution of the cleaning action is performed by a thread associated with the cleaner. All exceptions thrown by the cleaning action are ignored. The cleaner and other cleaning actions are not affected by exceptions in a cleaning action. The thread runs until all registered cleaning actions have completed and the cleaner itself is reclaimed by the garbage collector.

If the CleaningExample is used in a try-finally block then the close method calls the cleaning action. If the close method is not called, the cleaning action is called by the Cleaner when the CleaningExample instance has become phantom reachable. public class CleaningExample implements AutoCloseable // A cleaner, preferably one shared within a library private static final Cleaner cleaner = ; static class State implements Runnable State(...) // initialize State needed for cleaning action public void run() // cleanup action accessing State, executed at most once private final State; private final Cleaner.Cleanable cleanable public CleaningExample() this.state = new State(...); this.cleanable = cleaner.register(this, state); public void close() cleanable.clean(); The cleaning action could be a lambda but all too easily will capture the object reference, by referring to fields of the object being cleaned, preventing the object from becoming phantom reachable. Using a static nested class, as above, will avoid accidentally retaining the object reference.

Cleaning actions should be prepared to be invoked concurrently with other cleaning actions. Typically the cleaning actions should be very quick to execute and not block. If the cleaning action blocks, it may delay processing other cleaning actions registered to the same cleaner. All cleaning actions registered to a cleaner should be mutually compatible.

The cleaner creates a daemon thread to process the phantom reachable objects and to invoke cleaning actions. The context class loader of the thread is set to the system class loader. The thread has no permissions, enforced only if a SecurityManager is set.

A cleaner or a cleaning operative is a type of industrial or domestic worker who cleans homes or commercial premises for payment. Cleaning operatives may specialize in cleaning particular things or places, such as window cleaners.[1] Cleaning operatives often work when the people who otherwise occupy the space are not around. They may clean offices at night or houses during the workday.

The cleaning industry is quite big as different types of cleaning are required for different objects and different properties. 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. 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.[2] 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. Some types of cleaners are mentioned below.

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. 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.

Cleaner is a 2007 American thriller film directed by Renny Harlin. It stars Samuel L. Jackson as a crime scene cleaner who thinks he has become part of a cover-up; Ed Harris, Keke Palmer, and Eva Mendes also star. The film was released on May 27, 2007.

Not all air-cleaning devices are appropriate for home use; some are known to be harmful to human and animal health. Ozone generators, which are portable or in-duct air cleaners that intentionally create ozone, can produce levels that are much higher than health-based standards. There are companies that try to sell the idea that breathing ozone is actually healthy, but there are 40 years of scientific studies that show even relatively low concentrations of ozone are harmful to biological tissue in plants and animals, including humans. It is well-documented that ozone can cause respiratory tract irritation and inflammation, serious breathing difficulty including asthma, permanent lung damage, and cardiovascular effects. The American Lung Association has concluded that breathing even low levels of ozone increases the risk of premature death.

In 2008, CARB enacted an air cleaner regulation to limit the ozone emissions from indoor air cleaning devices. The regulation requires all indoor air cleaners sold in California to be certified by CARB, including air cleaners sold online. Approved air cleaners are listed at California Certified Air Cleaning Devices, which is regularly updated. Approved air cleaners must also show a label on the packaging similar to the sample label shown below. Even though fully-integrated in-duct air cleaning devices are currently exempted from the regulation, some in-duct devices may create ozone at unhealthy levels. CARB is amending the air cleaner regulation to include in-duct devices in the future. For more information on the regulation, please read the Frequently Asked Questions.

In addition to CARB certification, there are other factors to consider in selecting a suitable air cleaner. It's important to choose an air cleaner with a Clean Air Delivery Rate (CADR) that matches the size of the space you want to clean. So, check both the certified list and the information in the sections below to make the best choice for your needs.

If you need further assistance after reviewing these links, contact us at (916) 445-0753. If you are interested in upcoming activities related to the regulation, subscribe to the Air Cleaner Regulation Topic or contact us at

A. No. The original legislative concept included a request for funds to help dry cleaners that still use perc to purchase non-perc equipment through a limited term reimbursement program. That funding is not included in the governor's budget, and so this piece was removed.

The Polaris 3900 Sport pressure cleaner works in all in-ground pools, and requires a booster pump. It supplements the pool's filtration system by circulating an additional 40 gallons of water per minute through its filter bag. The 3900 Sport includes TailSweep PRO, an advanced sweep hose enhancement that blows debris out of corners and hard to reach places, while also keeping water from spraying outside the pool. No more wet windows or walkways!

Dry cleaners transferring ownership of a facility must file an updated Air Facility Registration application (PDF) within 30 days of the change of ownership at the appropriate DEC Regional Air Program office. New Owners/Managers and Operators must be certified prior to taking over the facility.

To keep your perc dry cleaner Owner/Manager and/or Operator certificate valid, we need YOUR current personal mailing address on record. This is especially important at renewal time. Remember your perc dry cleaner Owner/Manager and/or Operator Certification is issued to you personally, just like a driver's license or passport, not to the shop where you work. Please send change of address notifications to:

Operation of equipment installed under previous regulations may continue at their existing locations, until prohibited. Dryers without a primary control system and operation of any vented machine are not permitted after December 31, 2021. Solvent recovery dryers, with a water cooled condenser as the primary control system, are not permitted after December 31, 2026. Operation of any alternative solvent transfer machine is not permitted after December 31, 2031. Dry cleaners may only use approved solvents in alternative solvent dry cleaning equipment.

This program was created in the 1997-1999 state budget, effective Oct. 14, 1997. This program was developed by the dry cleaning industry to cover eligible costs associated with responding to, investigating and cleaning up contamination caused by releases of dry cleaning solvents. The program is funded by a license fee for dry cleaners and a solvent fee on the sale of dry cleaning solvents. Two department bureaus, Remediation & Redevelopment and Community Financial Assistance, work in partnership to administer the program to dry cleaners.

Don't mix bleach with ammonia, acids, or other cleaners. Mixing bleach with common cleaning products can cause serious injuries. Be sure to always read the product label before using a cleaning product.

Sodium Hypochlorite is the active ingredient in chlorine bleach. It is found in household bleach and many other disinfectants. Sodium hypochlorite reacts with ammonia, drain cleaners, and other acids. Many household products state that they contain bleach on the label. 041b061a72


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