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泛型信息只存在于代碼編譯階段,在進(jìn)入 JVM 之前褥影,與泛型相關(guān)的信息會(huì)被擦除掉池户。 引入泛型的目的:Generics were introduce...
在泛型代碼中校焦,?被稱為通配符,用于表示未知類型统倒≌洌可被用于:the type of a parameter, field, or local va...
在泛型類型實(shí)例化和泛型方法調(diào)用的例子中耸成,我們已經(jīng)接觸到了Type Inference报亩。本章就來(lái)詳細(xì)介紹Type Inference。 Type ...
我們先來(lái)看一段代碼: 這樣寫(xiě)是沒(méi)有問(wèn)題的捆昏,因?yàn)镾tring是Object的子類。現(xiàn)在我們來(lái)看另一段代碼: 這段代碼能過(guò)通過(guò)編譯嗎骗卜?答案是不行,因...
What and Why There may be times when you want to restrict the types that...
Generic methods are methods that introduce their own type parameters. Th...
Generic Types A generic type is a generic class or interface that is par...
Why Use Generics In a nutshell, generics enable types (classes and inter...