Name: ipR10067 Date: 08/21/2001



Method javax.imageio.stream.ImageInputStreamImpl.readUTF() does not work as specified.
This method is inherited by some classes of package javax.imageio.stream.

Specification of the class javax.imageio.stream.ImageInputStreamImpl says:

"public String readUTF() throws IOException
...
First, two bytes are read and used to construct an unsigned 16-bit
integer in the manner of the readUnsignedShort method,
using network byte order (regardless of the current byte order setting).
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
The current byte order setting is ignored.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"
However, the current implementation (JDK 1.4.0beta, build b77) of the method does
not ignore byte order setting.


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) {
        OutputStream os = (OutputStream) new ByteArrayOutputStream();
        MemoryCacheImageOutputStream iosI =
                new MemoryCacheImageOutputStream(os);
        try {
            int len = 256;
            char [] cc = new char[len];
            for (int i = 0; i < len; i++) {
                cc[i] = '\u0001';
            }
            String s = new String(cc);
            String res1;
            String res2;

// set network byte order
            iosI.setByteOrder(true);
            iosI.seek(0);
            iosI.writeUTF(s);

            iosI.seek(0);
            res1 = iosI.readUTF();

// set reverse byte order
            iosI.setByteOrder(false);

            iosI.seek(0);
            res2 = iosI.readUTF();

            if ( res1.equals(res2)) {
                System.out.println("OKAY");
            } else {
                System.out.println("Failed: res1.length() = " + res1.length()
                        + " res2.length() = " + res2.length());
            }
        } catch (Exception e) {
            System.out.println("Failed: unexpected exception " + e);
        }
    }
}
-----------------------------------------
% javac -d . test.java
% java -version
java version "1.4.0-beta2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta2-b77)
% java test
Failed: res1.length() = 256 res2.length() = 1

JCK tests affected:
api/javax_imageio/stream/ImageOutputStreamImpl/index.html#WriteUTF[WriteUTF005]

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