Name: vpR10011 Date: 04/19/2001



Specifications of the following methods from the class
javax.imageio.stream.ImageInputStreamImpl:

readBoolean()
readByte()
readUnsignedByte()

say nothing about throwing EOFException.

But these methods throw EOFException if the stream reaches the end
before reading all the bytes.


To reproduce this bug run the following test:
---------------------test.java--------------
import java.io.*;
import javax.imageio.stream.*;

public class test {
    public static void main(String[] argv) {
        byte [] bar = new byte[0];
        InputStream is = (InputStream) new ByteArrayInputStream(bar);
        ImageInputStreamImpl iisI = (ImageInputStreamImpl) new MemoryCacheImageInputStream(is);
        System.out.println("readBoolean");
        try {
            boolean b = iisI.readBoolean();
            System.out.println("Passed");
        } catch (Exception e) {
            System.out.println("Failed: unexpected exception " + e);
        }
        System.out.println("readByte");
        try {
            byte b = iisI.readByte();
            System.out.println("Passed");
        } catch (Exception e) {
            System.out.println("Failed: unexpected exception " + e);
        }
        System.out.println("readUnsignedByte");
        try {
            int b = iisI.readUnsignedByte();
            System.out.println("Passed");
        } catch (Exception e) {
            System.out.println("Failed: unexpected exception " + e);
        }
    }
}
-------------------log----------------------
% java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b60)
Java HotSpot(TM) Client VM (build 1.4.0-beta-b60, mixed mode)
% java test
readBoolean
Failed: unexpected exception java.io.EOFException
readByte
Failed: unexpected exception java.io.EOFException
readUnsignedByte
Failed: unexpected exception java.io.EOFException


This bug causes failure of the new JCK tests
api/javax_imageio/stream/ImageInputStreamImpl/index.html#readBoolean
api/javax_imageio/stream/ImageInputStreamImpl/index.html#readByte
api/javax_imageio/stream/ImageInputStreamImpl/index.html#readUnsignedByte

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