Test * java/net/HttpURLConnection/4523989/Test.java: Behavior of getResponseCode() is different between 131_01 and 131 Fixed in JDK1.3.1_03
failed on 1.4.2_13b1 but passed on previous fcs 1.4.2_12b3

output results are
for 1.4.2_12
getResponseCode: 404
getInputStream: java.io.IOException
getErrorStream: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@10385c1

for 1.4.2_13
getResponseCode: 404
getInputStream: java.io.FileNotFoundException: http://jpseuwt-ap/testcases/131/4523989
getErrorStream: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@42719c

Test passed if
grep "getInputStream" test.out | grep "java.io.IOException"

Also
According documentations it should throw IOException - if an I/O error occurs while creating the input stream.
So it's a bug in that case.

In other case it can be a test's issue, I see a change of the checking filed state
grep "getInputStream" test.out | grep "java.io.FileNotFoundException"
changed to
grep "getInputStream" test.out | grep "java.io.IOException"

So, please correct me if it's a not product issue but test's one

Execution results for that test are attached

How to reproduce -
run JTreg with appropriate JDK (1.4.2_13b1)
the JTreg is placed on /net/jqa/export/home4/testsuites/regression/sqe-tools2.1.6fcs
to run please follow instructions http://jqa.ireland/procedures/test_procedures/141_test_procedures/RegressionTestExecution.html
use appropriate locations
test-suite /net/jqa/export/home4/testsuites/regression/142u13/test
And -automatic -bug:4523989 flag to that script

tested on
SunOS ventura 5.10 Generic_118822-30 sun4u sparc SUNW,Sun-Blade-2500
bash-3.00$ cat /etc/*release*
                       Solaris 10 1/06 s10s_u1wos_19a SPARC
           Copyright 2005 Sun Microsystems, Inc. All Rights Reserved.
                        Use is subject to license terms.
                           Assembled 07 December 2005