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Both the perennial Cosmos atrosanguineus and the annual cosmos are upright plants, making excellent additions to a summer border. The annuals are particularly effective when massed and provide flowers for cutting over a period of months. Will Cosmos survive the winter? They are not hardy and if you leave themRead More →

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However, even though most abstract classes don’t implement Serializable , they may still need to allow their subclasses to do so, if desired. There are two cases. If the abstract class has no state, then it can simply provide a no-argument constructor to its subclasses. How do you know ifRead More →