TimeZone factory methods return instance not deserializable in previous releases

Name: nt126004 Date: 02/28/2002


FULL PRODUCT VERSION :
java version "1.4.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)

FULL OPERATING SYSTEM VERSION :
Microsoft Windows 2000 [Version 5.00.2195]

A DESCRIPTION OF THE PROBLEM :
Serialize a TimeZone to file from JDK1.4. Deserializing
from JDK1.3 throws a ClassNotFoundException.

This is related to bug 4490827 which has been closed - the
test source code below comes from there modified slightly.

REGRESSION. Last worked in version 1.3.1

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Run the test program in JDK1.4.
2. Comment out writeObject(); in main, and compile and run
in JDK1.3.1_02.


EXPECTED VERSUS ACTUAL BEHAVIOR :
Results from step 1:

 tz=sun.util.calendar.ZoneInfo
[id="GMT",offset=0,dstSavings=0,useDaylight=false,transition
s=0,lastRule=null]


Results from step 2:

See the exception stack trace in Error Messages.


ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.lang.ClassNotFoundException: sun.util.calendar.ZoneInfo
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:654)
at java.io.ObjectInputStream.inputClassDescriptor
(ObjectInputStream.java:918)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:366)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1186)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
at com.bglobal.gimg.glm.test.TimeZoneTest.readObject
(TimeZoneTest.java:34)
at com.bglobal.gimg.glm.test.TimeZoneTest.main(TimeZoneTest.java:15)

This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.TimeZone;

public class TimeZoneTest {

    static String fName = "tmp";

    public static void main(String[] arg) throws Exception {
        writeObject();
        readObject();
    }

    static void writeObject() throws Exception {

        FileOutputStream fos = new FileOutputStream(fName);
        ObjectOutputStream out = new ObjectOutputStream(fos);

        TimeZone tz = TimeZone.getTimeZone("GMT");
        out.writeObject(tz);

        out.flush();
        out.close();
    }

    static void readObject() throws Exception {
        FileInputStream fis = new FileInputStream(fName);
        ObjectInputStream in = new ObjectInputStream(fis);

        TimeZone tz = (TimeZone) in.readObject();
        System.out.println(" tz=" + tz);

        in.close();
    }
}

---------- END SOURCE ----------
(Review ID: 139756)
======================================================================