Java 等价于 C#'using' 语句
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Java equivalent of C# 'using' statement
提问by Chris
Possible Duplicate:
“using” keyword in java
可能的重复：
Java 中的“使用”关键字
I'm transitioning from C# to java, so please bear with me...
我正在从 C# 过渡到 Java，所以请耐心等待...
When reading a file in C#, you simply wrap it all in a big 'using' block, so that if you have an exception, the file will still be closed. Like so (maybe inaccurate but you get the idea):
在 C# 中读取文件时，您只需将其全部包装在一个大的“using”块中，这样如果出现异常，该文件仍将被关闭。像这样（可能不准确，但你明白了）：
using(FileStream fs = new FileStream("c:\myfile.txt")) {
// Any exceptions while reading the file here won't leave the file open
}
Is there a convenient equivalent in java 5 or 6? I get the impression that lately java has been 'borrowing' some of the syntactic sugar from c# (such as foreach) and so i wouldn't be surprised if there's a java equivalent of using these days.
java 5 或 6 中是否有方便的等价物？我的印象是，最近 java 一直在从 c# 中“借用”一些语法糖（例如 foreach），所以如果现在有一个相当于使用的 java，我不会感到惊讶。
Or do i just have to use a try..finally block? 'Using' is just so much nicer i think...
还是我只需要使用 try..finally 块？我认为“使用”要好得多......
回答by Trillian
There's no equivalent syntax sugar using statements in Java 5 or 6. However, a proposalfor automatic resource management which adds a familiar Disposable interface seems to have been acceptedfor Java 7 . Until then, you have to manually code a try...finally.
在 Java 5 或 6 中没有使用语句的等效语法糖。但是，添加熟悉的 Disposable 接口的自动资源管理提案似乎已被Java 7接受。在此之前，您必须手动编写代码尝试……最后。
回答by Nulldevice
Have to use try .. finally
必须使用try .. 最后
P.S. foreach (iteration over a collection) is not an invention of C#
PS foreach（对集合进行迭代）不是 C# 的发明
