Re: Small Changes for Java JDK7

[Andrei Alexandrescu]

davidl wrote:
在 Mon, 02 Mar 2009 08:02:35 +0800，bearophile 
<bearophileh...@lycos.com> 写道:

From:
http://jeremymanson.blogspot.com/2009/02/small-language-changes-for-jdk7.html 


Automated Resource Blocks, to be able to say things like:

try (BufferedReader br = new BufferedReader(new FileReader(path)) {
  return br.readLine();
}

instead of:

BufferedReader br = new BufferedReader(new FileReader(path));
try {
   return br.readLine();
} finally {
   br.close();
}

based on having BufferedReader implement a Disposable interface.

------------------

Exception handling improvements:

try {
    doWork(file);
} catch (final IOException | SQLException ex) {
    logger.log(ex);
    throw ex;
}

Bye,
bearophile

I believe it is worse than scope(exit) resource.dispose(); in terms of 
syntax.

I agree. They keep on missing the point that the blessed code on the 
normal path MUST NOT TAKE THE HIT OF AN EXTRA INDENTATION LEVEL. I am 
screaming because people keep on falling in that trap in various 
languages, mostly by copying without thinking from other languages. The 
first language I know that did that mistake was Lisp itself.

Andrei