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类是一个抽象的概念;而对象是类抽象概念的实物表达;打个比方:比如水果摊进了一批水果(就好比是类);然后就去问卖家有哪些新鲜的水果;店家说有苹果、梨、桃等等(这里的苹果、梨、桃就是对象);也就是说对象是类的具体表达;而类则是对象的抽象表达。
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