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Groups > comp.lang.java.programmer > #34481

Re: OutputStream.write(int)

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Hi

Well, its a byte stream. I doubt that you can convey something
in the higher 24-bits in some implementation.

At least we can say that 0x000000 and 0xFFFFFF must be ignored,
otherwise the default implementation of write(byte[],..) gets
broken:

     public void write(byte b[], int off, int len) throws IOException {
	if (b == null) {
	    throw new NullPointerException();
	} else if ((off < 0) || (off > b.length) || (len < 0) ||
		   ((off + len) > b.length) || ((off + len) < 0)) {
	    throw new IndexOutOfBoundsException();
	} else if (len == 0) {
	    return;
	}
	for (int i = 0 ; i < len ; i++) {
	    write(b[off + i]);
	}
     }

But an Outputstream might also overwrite this method, it is
not a final method. But most likely we want:

      write(x)                      does the same as
      write(new byte[]{(byte)x})

And the above invariant wouldn't hold if we were to interpret
the upper 24-bits.

Bye

Volker Borchert schrieb:
> The javadoc as of 1.8 states: "The 24 high-order bits of b are ignored."
> Are they really? I.o.w., has anybody encountered broken implementations
> that don't, and where?
>
> 	vb
>
>

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Thread

OutputStream.write(int) v_borchert@despammed.com (Volker Borchert) - 2016-06-05 22:54 +0000
  Re: OutputStream.write(int) Jan Burse <janburse@fastmail.fm> - 2016-06-06 01:45 +0200
    Re: OutputStream.write(int) v_borchert@despammed.com (Volker Borchert) - 2016-06-06 03:19 +0000
      Re: OutputStream.write(int) Jan Burse <janburse@fastmail.fm> - 2016-06-06 11:58 +0200
        Re: OutputStream.write(int) v_borchert@despammed.com (Volker Borchert) - 2016-06-06 15:51 +0000
  Re: OutputStream.write(int) Arne Vajhøj <arne@vajhoej.dk> - 2016-06-05 20:09 -0400
  Re: OutputStream.write(int) Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2016-06-05 19:38 -0700

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