FULL PRODUCT VERSION :
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]


A DESCRIPTION OF THE PROBLEM :
It appears that if you override a JScrollBar in 1.5 it throws an exception when trying to serialize.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile and run the following code under 1.5
public class TestSerialization {

    public static void main(String[] args) {
        try {
            (new java.io.ObjectOutputStream(new java.io.ByteArrayOutputStream())).writeObject(new Scrollbar());
            System.exit(0);
        }
        catch (java.io.IOException e) {
            e.printStackTrace();
        }
    }

    private static class Scrollbar extends javax.swing.JScrollBar {
        public Scrollbar() {
        }
    }
}


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Process finished with exit code 0
ACTUAL -
ava.io.NotSerializableException: javax.swing.plaf.metal.MetalScrollBarUI
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.access$100(ObjectOutputStream.java:135)
at java.io.ObjectOutputStream$PutFieldImpl.writeFields(ObjectOutputStream.java:1512)
at java.io.ObjectOutputStream.writeFields(ObjectOutputStream.java:418)
at java.awt.Container.writeObject(Container.java:3461)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:890)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1333)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:291)
at TestSerialization.main(TestSerialization.java:6)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:78)

ERROR MESSAGES/STACK TRACES THAT OCCUR :
ava.io.NotSerializableException: javax.swing.plaf.metal.MetalScrollBarUI
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.access$100(ObjectOutputStream.java:135)
at java.io.ObjectOutputStream$PutFieldImpl.writeFields(ObjectOutputStream.java:1512)
at java.io.ObjectOutputStream.writeFields(ObjectOutputStream.java:418)
at java.awt.Container.writeObject(Container.java:3461)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:890)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1333)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:291)
at TestSerialization.main(TestSerialization.java:6)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:78)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class TestSerialization {

    public static void main(String[] args) {
        try {
            (new java.io.ObjectOutputStream(new java.io.ByteArrayOutputStream())).writeObject(new Scrollbar());
            System.exit(0);
        }
        catch (java.io.IOException e) {
            e.printStackTrace();
        }
    }

    private static class Scrollbar extends javax.swing.JScrollBar {
        public Scrollbar() {
        }
    }
}

---------- END SOURCE ----------

Release Regression From : 1.4.2
The above release value was the last known release where this
bug was known to work. Since then there has been a regression.
###@###.### 11/1/04 23:41 GMT