FULL PRODUCT VERSION :
Standard Edition (build 1.5.0_07-b03)

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

EXTRA RELEVANT SYSTEM CONFIGURATION :
not relevant

A DESCRIPTION OF THE PROBLEM :
When a constructor specifying class fields is used to create a Gregorian Calendar object and lenient flag is set true, after changing a time related field
every call to get(..) method to access Gregorian Calendar fields throws
an exception.

following code will generate exception
    GregorianCalendar gc = new GregorianCalendar(2006,5,16);
    gc.setLenient(false);
    gc.set(GregorianCalendar.HOUR_OF_DAY, 10);
    gc.get(GregorianCalendar.YEAR);

the problem is obviousely in computeTime() method of Gregorian Calendar
and exception is thrown by following check:
if (!isLenient()) {
for (int field = 0; field < FIELD_COUNT; field++) {
if (!isExternallySet(field)) {
continue;
}
if (originalFields[field] != internalGet(field)) {
// Restore the original field values
System.arraycopy(originalFields, 0, fields, 0, fields.length);
throw new IllegalArgumentException(getFieldName(field));
}
}
}

(problem do not exist in java version 1.4.2_04-b05)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
run following code:
    GregorianCalendar gc = new GregorianCalendar(2006,5,16);
    gc.setLenient(false);
    gc.set(GregorianCalendar.HOUR_OF_DAY, 10);
    gc.get(GregorianCalendar.YEAR); <-Illegal Argument exception


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
get the value of year field of GregorianCalendar
ACTUAL -
Illegal Argument exception

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "main" java.lang.IllegalArgumentException: HOUR

at java.util.GregorianCalendar.computeTime(GregorianCalendar.java:2481)

at java.util.Calendar.updateTime(Calendar.java:2260)

at java.util.Calendar.complete(Calendar.java:1305)

at java.util.Calendar.get(Calendar.java:1088)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
    GregorianCalendar gc = new GregorianCalendar(2006,5,16);
    gc.setLenient(false);
    gc.set(GregorianCalendar.HOUR_OF_DAY, 10);
    gc.get(GregorianCalendar.YEAR); <-Illegal Argument exception

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

CUSTOMER SUBMITTED WORKAROUND :
use a no parameter constructor and field set methods

Release Regression From : 1.4.2_11
The above release value was the last known release where this
bug was not reproducible. Since then there has been a regression.