Name: mlR10151 Date: 04/04/2001



According to the spec. (class MemoryCacheImageOutputStream)

public long length()
 . . .
Returns:
    a long containing the length of the stream, if known, or else -1.

But it returns wrong value if last byte was filled by the writeBit method:

===================== a.java =======================
import java.io.*;
import javax.imageio.stream.*;

public class a {
    public static void main (String argv[]) throws Exception {
        OutputStream ostream = new ByteArrayOutputStream();
        MemoryCacheImageOutputStream mcios = new MemoryCacheImageOutputStream(ostream);

        mcios.write(0);
        mcios.writeBit(1);
    
        long len = mcios.length();
        System.out.println( (len == -1 || len == 2 ? "Passed" : "Failed") + ". len = " + len );
    }
}
===================== log =======================
% java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b58)
Java HotSpot(TM) Client VM (build 1.4.0-beta-b58, mixed mode)
% java a
Failed. len = 1


Note, the test with 8 lines "mcios.writeBit(1);" fails also.

This bug causes failure of the new JCK test
api/javax_imageio/stream/MemoryCacheImageOutputStream/index.html#length


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