Re: Bytes coming through as -1

From:
"AndrewTK" <atkedzierski@gmail.com>
Newsgroups:
comp.lang.java.programmer
Date:
2 Aug 2006 09:07:22 -0700
Message-ID:
<1154534842.152178.29290@b28g2000cwb.googlegroups.com>

First problem:
   while( (rcount = in.read(trash)) != -1) {
   for(int i=0; i<rcount; i++) {
   if(trash[i] ==-1) {
                                      System.out.print(".");
                                 }
   }

You may not necessarily always read complete 10 byte chunks. Always
check how many bytes you actually got from the read, and then only use
that many bytes.


Thanks for pointing that out Rogan - silly me I should have spotted
that myself.

Unfortunately in my other files I do check for the number of bytes read
(hence the rcount - I was being lazy, I wrote the example specifically
for the post)

Corrected it gives:

    public static void test(InputStream in, OutputStream out) throws
IOException {
        System.out.println(in.getClass().getName() );
        byte[] trash = new byte[10];
        int rcount;
        while( (rcount = in.read(trash)) != -1) {
            for(int i=0;i<rcount;i++) {
                if(trash[i] == -1) {System.out.print(".");}
            }
        }
    }

The same output comes back. A load of dots.

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