API jdk8-阿里云

【JAVA进阶篇教学】第三篇：JDK8中Stream API使用

博主打算从0-1讲解下java进阶篇教学，今天教学第三篇：JDK8中Stream API使用。 Java 8 中的 Stream API 提供了一种便捷、高效的方式来处理集合数据，它支持函数式编程风格的操作，包括过滤、映射、归约等。Stream API 可以大大简化集合的处理代码，使得代码更加清晰和...

JDK8新特性之日期时间API

一.JDK8新特性之日期时间API-案例实操之前我们学习了Stream流、Lambda表达式以及方法引用等相关的内容，如果想学习的同学可以看一下之前的文章，接下来我们一起学习一下关于JDK8中新日期时间API的使用。二.JDK中原始日期时间存在的问题设计不合理，没有一个统一衡量的标准，在jav...

体验-K8S API 基础及Pod 基本应用

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jdk8 里面常用的Stream Api（下）

清单 14. Optional 的两个用例String strA = " abcd ", strB = null; print(strA); print(""); print(strB); getLength(strA); getLength(""); getLength(strB); public...

jdk8 里面常用的Stream Api（上）

为什么需要 StreamStream 作为 Java 8 的一大亮点，它与 java.io 包里的 InputStream 和 OutputStream 是完全不同的概念。它也不同于 StAX 对 XML 解析的 Stream，也不是 Amazon Kinesis 对大数据实时处理的 Stream。...

JDK8中的新时间API:Duration Period和ChronoUnit介绍

目录简介DurationPeriodChronoUnit简介在JDK8中，引入了三个非常有用的时间相关的API：Duration，Period和ChronoUnit。他们都是用来对时间进行统计的，本文将会详细讲解一下这三个API的使用。DurationDuration主要用来衡量秒级和纳秒级的时间，...

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