The drawback is the runtime won’t warn you if you reuse an object without clearing it first. If you always get a new on, NullPointerException will warn you if you fail to allocate.
Plastics are often marked with a Resin Code to indicate how they should be recycled. Only types 1 and 2 are actually recycled. The chasing arrows symbol just means the plastic could in theory be recycled. Type (3) PVC (Polyvinyl Chloride) is never recycled. There is no law in the USA limiting how the symbol is used. Manufacturers can put in on anything they please. Bag-It
|Resin Plastic Recycling Codes|
|Technical Name||Typical Uses|
|PETE (Polyethylene Terephthalate)||soft drink bottles, deli trays, Mylar film, clear shampoo bottles, mouthwash bottles.|
|HDPE (High Density Polyethylene)||Tupperware, milk jugs, dishwashing detergent containers, juice containers, opaque shampoo bottles, oven cleaner bottles, insecticide bottles, yogurt containers|
|PVC||plumbing pipes, construction materials, vinyl records, opaque shampoo bottles,|
|LDPE (Low Density Polyethylene)||grocery bags, dry cleaning bags, aquarium tubing.|
|PP (Polypropylene)||appliance parts, Tic Tac hinge lids, drinking glasses, mustard squeeze bottles, margarine containers, pudding containers|
|PS (Polystyrene)||styrofoam cups.|
|Other plastics, including acrylic,
polycarbonate, nylon, Kevlar, fiberglass.
|compact discs, DVDs (Digital Video Discs).|
Staples will pick up your old batteries, ink and electronics. The catch is they do not guarantee confidential handling of any personal information it may contain.
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