Re: dealing with ClassLoaders...

From:
Mike Amling <mamling@chaff.us>
Newsgroups:
comp.lang.java.programmer
Date:
Mon, 04 Aug 2014 19:53:44 -0500
Message-ID:
<c4ao7sF1mehU1@mid.individual.net>
On 8/4/14 10:12 AM, Andreas Leitgeb wrote:

             URL url=getSystemResource(name.replace('.', '/') + ".class");
             byte[] classData = new byte[1024*1024*10]; int len = 0;
             try {
                len = url.openConnection().getInputStream().read(classData);
             } catch (IOException e) {
                e.printStackTrace();
             }

     You could buffer to a ByteArrayOutputStream.

   InputStream source=getSystemResource(name.replace('.', '/') +
".class").openConnection().getInputStream();
   ByteArrayOutputStream buffer=new ByteArrayOutputStream();
   try {
      for (int input; (input=source.read())>=0; ) {
         buffer.write(input);
      }
   } catch (IOException i) {
      Whatever
   }
   byte[] classData=buffer.toByteArray();

This appears to work (from watching the debugger pass through it),
although it is obviously quick'n'dirty. Most obviously, I'd like
to get rid of the 10M-sized array, but I don't think I can ask the
URL or the Stream about the exact size beforehand.


--Mike Amling
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