Java数据类型类型的相关内容

34、Java 中有了基本数据类型，为什么还需要有包装类型？包装类型是啥？

一、引入（基本数据类型弊端）对比引用类型，基本类型（byte、short、int、float、boolean …）有一些缺陷 ✒️ 无法表示不存在的值（null值） ✏️ 假如你开了一家酒店，...

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文章目录前言一、基本数据类型1.1 分类1.2 概念1.3 代码1.4 二维表二、各基本数据类型间强制转换2.1 为什么Java中有强制转换？2.2 示例代码三、包装类型3.1 为什么有包装类型？3.2 基本概念3.3 转换方法四、转换过程中使用的自动装箱和自动拆箱4.1 来源4.2 原理4.3 示...

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第34篇：Java 中有了基本数据类型，为什么还需要有包装类型？包装类型是啥？

一、引入（基本数据类型弊端）对比引用类型，基本类型（byte、short、int、float、boolean ...）有一些缺陷✒️ 无法表示不存在的值（null值）:pencil2: 假如你开了一家:hotel:酒店，你想统计一周的盈利:moneybag:情况（如：星期一赚:100:万、星期二亏...

Java中基本数据类型boolean的位数、字节数、默认值、包装类型都是什么？

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