FULL PRODUCT VERSION :
Java Version:1.5.0_04

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

A DESCRIPTION OF THE PROBLEM :
ClassCastException with code that runs as i expected until 1.4.2_XX

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run Testcode i added

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Output:

Java Version:1.4.2_05
Result: 0
ACTUAL -
Output:

Java Version:1.5.0_04
Exception in thread "main" java.lang.ClassCastException: java.util.Date
        at java.sql.Timestamp.compareTo(Timestamp.java:474)
        at Testcase.main(Testcase.java:24)


ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "main" java.lang.ClassCastException: java.util.Date
        at java.sql.Timestamp.compareTo(Timestamp.java:474)
        at Testcase.main(Testcase.java:24)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class Testcase {

    public static void main(String[] args) {
        System.out.println("Java Version:" + System.getProperty("java.version"));
        
        java.util.Date utilDate = new java.util.Date();
        java.sql.Timestamp sqlTimetamp = new java.sql.Timestamp(utilDate.getTime());
        java.util.Date testDate = (java.util.Date)sqlTimetamp;
        
        System.out.println("Result: " + testDate.compareTo(utilDate)); // <<< Exception
    }
    
}
---------- END SOURCE ----------

Release Regression From : 5.0
The above release value was the last known release where this
bug was known to work. Since then there has been a regression.