什么 - >用Java表示 [英] What does -> means in Java

问题描述

我只想了解符号' - >'的含义。我写了一个简单的方法并关闭了IDE会话。当我回来继续我的工作时，它看起来如下。

I am just looking to get an understanding on what the symbol '->' means. I wrote a simple method and closed that IDE session. When I returned back to continue my work, it looked as follows.

当我点击该方法时，它又回复到我最初的编写方式，如下所示：

When I clicked on the method, it reverted back to how I initially wrote it as follows:

我的问题是，这是Java的新语法8.0或IDE是否自动完成某种信息崩溃？

My Question is, is this a new syntax for Java 8.0 or did the IDE automatically did some kind of information collapse?

推荐答案

它是Java的8 Lambda表达式，但是因为我看到 （查看） - > 灰显了一下，可能是你的IDE折叠了。检查：设置，编辑，代码折叠然后取消选中Closures（实现单一方法的匿名类）。

It is either Java's 8 Lambda Expressions, but since I see the (view) -> grayed out a bit, it is probably folded by your IDE. Check: Settings, Editor, Code Folding and then uncheck "Closures" (anonymous classes implementing a single method).

是的，我检查了IntelliJ 13.我安装了JDK 7（我的系统上没有v8），并检查设置，编辑，代码折叠然后取消选中Closures（实现单个方法的匿名类）使它们看起来与原始问题中的图片完全相同。

Yes, I checked IntelliJ 13. I have JDK 7 installed (I don't have v8 on my system), and checking Settings, Editor, Code Folding and then uncheck "Closures" (anonymous classes implementing a single method) makes them look exactly like the picture in the original question.

这篇关于什么 - >用Java表示的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！