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泛型1.泛型概述泛型：是JDK5中引入的特性，它提供了编译时类型安全检测机制，该机制允许在编译时检测到非法的类型它的本质是参数化类型，也就是说所操作的数据类型被指定为一个参数一提到参数，最熟悉的就是定义方法时有形参，然后调用此方法时传递实参。那么参数化类型怎么理解呢？顾名思义，就是将类型由原来的具体...

Java基础泛型

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Java 基础（一）| 使用泛型的正确姿势

一、什么是泛型泛型，即 “参数化类型”。一提到参数，最熟悉的就是定义方法时有形参，然后调用此方法时传递实参。那么参数化类型怎么理解呢？顾名思义，就是将类型由原来的具体的类型参数化 (动词)，类似于方法中的变量参数，此时类型也定义成参数形式（可以称之为类型形参）࿰...

Java基础遨游Java 泛型海洋

前言有时候在项目开发过程中，很多可以使用复用的部分。在接下来讲解的泛型泛型进行相对于传统上的形参，可以使我们的参数具有更多类型上的变化，使代码能更好地复用。什么是泛型？泛型，即“参数化类型”,在面向对象编程及各种设计模式中有非常广泛的应用。Java 泛型（generics）是 JDK 5 中...

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泛型的优缺点优点：使用泛型类型可以最大限度地重用代码、保护类型的安全以及提高性能。泛型最常见的用途是创建集合类。缺点：在性能上不如数组快。泛型常用特点，List<String>能否转为List<Object> 能，但是利用类都继承自Object，所以使用是每次调用...

java基础之泛型

泛型术语 "?"通配符通配符的扩展自定义泛型方法 "擦除"实例类型参数的类型推断自定义泛型类泛型方法和泛型类的比较泛型和反射通过反射获得泛型的实际类型参数本文对泛型的基本知识进行较为全面的总结，并附上简短的代码实例，加深记忆。泛型将集合中的元素限定为一个特定的类型。术语 Ar...

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