From 2571fbcbcc83936b0243ebe91c0a6408fb3d26c5 Mon Sep 17 00:00:00 2001 From: LD00000 Date: Thu, 17 Mar 2016 00:28:54 +0800 Subject: [PATCH] =?UTF-8?q?=E7=BF=BB=E8=AF=91?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- README.md | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/README.md b/README.md index 7ee572f3..8782a146 100644 --- a/README.md +++ b/README.md @@ -45,7 +45,7 @@ This article was originally posted on [my blog](http://winterbe.com/posts/2014/0 ## Default Methods for Interfaces -Java 8 enables us to add non-abstract method implementations to interfaces by utilizing the `default` keyword. This feature is also known as [virtual extension methods](http://stackoverflow.com/a/24102730). +Java 8 允许我们在接口中增加通过 `default` 关键字修饰的非抽象方法。这个特性也被称为 [virtual extension methods](http://stackoverflow.com/a/24102730) (虚拟拓展方法) Here is our first example: @@ -59,7 +59,7 @@ interface Formula { } ``` -Besides the abstract method `calculate` the interface `Formula` also defines the default method `sqrt`. Concrete classes only have to implement the abstract method `calculate`. The default method `sqrt` can be used out of the box. +除了抽象方法 `calculate` `Formula` 接口还定义了一个默认方法 `sqrt`。实现类只需要实现抽象方法 `calculate`。默认方法 `sqrt` 可以直接使用。 ```java Formula formula = new Formula() { @@ -73,7 +73,7 @@ formula.calculate(100); // 100.0 formula.sqrt(16); // 4.0 ``` -The formula is implemented as an anonymous object. The code is quite verbose: 6 lines of code for such a simple calculation of `sqrt(a * 100)`. As we'll see in the next section, there's a much nicer way of implementing single method objects in Java 8. +formula 是实现接口的匿名对象。上面的代码很详细：6行代码实现了一个简单的 `sqrt(a * 100)`计算。在下面的章节里，会有更好的方法在 Java 8 中实现单个方法对象。 ## Lambda expressions @@ -535,7 +535,7 @@ As you can see both code snippets are almost identical but the parallel sort is ## Maps -As already mentioned maps do not directly support streams. There's no `stream()` method available on the `Map` interface itself, however you can create specialized streams upon the keys, values or entries of a map via `map.keySet().stream()`, `map.values().stream()` and `map.entrySet().stream()`. +As already mentioned maps do not directly support streams. There's no `stream()` method available on the `Map` interface itself, however you can create specialized streams upon the keys, values or entries of a map via `map.keySet().stream()`, `map.values().stream()` and `map.entrySet().stream()`. Furthermore maps support various new and useful methods for doing common tasks.