JDK 8的发布不仅提升了Java语言的现代化水平,也为开发者提供了更加强大和灵活的工具,以应对日益复杂的应用开发需求。 JDK 8的主要目标是提高Java语言的简洁性和表达力,同时增强其在现代计算环境中的竞争力。为了实现这些目标,JDK 8团队专注于引入以下几个核心特性: Lambda表达式:这是JDK 8中最引人注目的新特性之一...
Java Stream API for Bulk Data Operations on Collections(用于集合上的批量数据操作的Java Stream API) Java Time API Collection API improvements Concurrency API improvements Java IO improvements 1.forEach() method in Iterable interface(Iterable接口中的forEach()方法) 每当我们需要遍历Collection时,我们需要创...
Method parameter reflection Collections Class in the newjava.util.streampackage provide a Stream API to support functional-style operations on streams of elements.The Stream API is integrated into the Collection API,which enables bulk operations on collections,such as sequentialorparallelmap-reduce transf...
Java 8用默认方法与静态方法这两个新概念来扩展接口的声明。默认方法使接口有点像Traits(Scala中特征(trait)类似于Java中的Interface,但它可以包含实现代码,也就是目前Java8新增的功能),但与传统的接口又有些不一样,它允许在已有的接口中添加新方法,而同时又保持了与旧版本代码的兼容性。
The Java Collections Framework has been updated to support lambda expressions, streams, and aggregate operations. For more information on these topics, see the following pages: Performance Improvement for HashMaps with Key Collisions In rare situations, this change could introduce a change to the ite...
4. Java Stream API for Bulk Data Operations on Collections A newjava.util.streamhas been added in Java 8 to perform filter/map/reduce like operations with the collection. Stream API will allow sequential as well as parallel execution. This is one of the best features for me because I work...
Having realised that Java 8 is due for its GA release within the next few weeks I thought it was about time I had a look at it and over the last week have been reading Venkat Subramaniam’s book. I’m up to chapter 3 which covers sorting a collection of
Craig Motlin
5. Java 8 and the Introduction of Stream One of the new major features in Java 8 was the addition of Stream (and Collectors). There are many ways to create a Stream from a source. However, most operations that affect the Stream instance won’t mutate its source, rather, the...
In thefirstarticle we learned about Lambdas, functional interfaces and method references introduced in Java 8. In thepreviousarticle we saw default methods in interfaces and their inheritance rules. In this article we look at the new default methods added in the Collections hierarchy. Many of the...