Name: dsR10051 Date: 03/16/2001



Method
protected void writeObject(Object o) of class java.beans.XMLEncoder
does not write next Float and Double objects to the output stream:
Float.NaN, Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY,
Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY, Double.NaN

Here is minimized test:
import java.io.*;
import java.beans.*;

public class Test0007 {

    public static void main(String[] args) {
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        Object[] objects = {new Float(Float.NaN), new Float(Float.NEGATIVE_INFINITY), new Float(Float.POSITIVE_INFINITY), new Double(Double.NEGATIVE_INFINITY), new Double(Double.POSITIVE_INFINITY)};
        XMLEncoder xmlEnc = new XMLEncoder(os);
        for (int i = 0; i < objects.length; i++) {
            xmlEnc.writeObject(objects[i]);
        }
        xmlEnc.flush();
        xmlEnc.close();
        ByteArrayInputStream in = new ByteArrayInputStream(os.toByteArray());
        XMLDecoder xmlDec = new XMLDecoder(in);
                System.out.println("OutputStream");
                System.out.println(os.toString());
        for (int i = 0; i < objects.length; i++) {
            Object res = xmlDec.readObject();
            if (!objects[i].equals(res)) {
                System.out.println("FAILED");
                System.out.println("Object type: " + objects[i].getClass());
                System.out.println("Result : " + res);
                System.out.println("Expected: " + objects[i]);
            }
        }
    }
}
--- Output ---
%java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b55)
Java HotSpot(TM) Client VM (build 1.4beta-B55, mixed mode)
%java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b55)
Java HotSpot(TM) Client VM (build 1.4beta-B55, mixed mode)
%java Test0007
java Test0007
Warning:
    Cannot allocate colormap entry for default background

java.lang.NumberFormatException: NaN
Continuing ...
java.lang.Exception: discarding statement XMLEncoder0.writeObject(Float0);
Continuing ...
java.lang.NumberFormatException: -Infinity
Continuing ...
java.lang.Exception: discarding statement XMLEncoder0.writeObject(Float1);
Continuing ...
java.lang.NumberFormatException: Infinity
Continuing ...
java.lang.Exception: discarding statement XMLEncoder0.writeObject(Float2);
Continuing ...
java.lang.NumberFormatException: -Infinity
Continuing ...
java.lang.Exception: discarding statement XMLEncoder0.writeObject(Double0);
Continuing ...
java.lang.NumberFormatException: Infinity
Continuing ...
java.lang.Exception: discarding statement XMLEncoder0.writeObject(Double1);
Continuing ...
java.lang.NumberFormatException: NaN
Continuing ...
java.lang.Exception: discarding statement XMLEncoder0.writeObject(Double2);
Continuing ...
OutputStream
<?xml version="1.0" encoding="UTF-8"?>
<java version="1.4.0-beta" class="java.beans.XMLDecoder">
</java>

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
        at java.beans.ObjectHandler.dequeueResult(XMLDecoder.java:270)
        at java.beans.XMLDecoder.readObject(XMLDecoder.java:148)
        at Test0007.main(Test0007.java:20)
%

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