Java 1.3.1_08 deprecated java.util.Date(int,int,int,int,int,int) is unable
to give hour information after many many iterations. It gives "0" instead.
This happens both on single- and multi-processor maschines.
This happens both on Sparc Solaris 7, 8, 9 and Windows (W2K) platforms.
This happens both with "-client" and "-server".


The problem is reproducible, however requires some runtime hours, until it
shows.


1. Testcase
-----------
% more SimpleJavaUtilDateTest1.java
/*
 * Created on 03.07.2003
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */

import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

/**
 * @author s3876
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */

public class SimpleJavaUtilDateTest1 implements Runnable {
  private static SimpleDateFormat sdfhour = new SimpleDateFormat("HH");
  private int threadCnt = -1;

  private SimpleJavaUtilDateTest1(int idx) {
    this.threadCnt = idx;
  }

  public void run() {
    long cnt = 0;
    while(true) {
        cnt++;
        int hour = (int) (cnt % 5 + 1);
        Date date = new Date(103, 05, 30, hour, 15, 10);
        String strhour = null;
        synchronized (sdfhour) {
                strhour = sdfhour.format(date);
        }
        if (Integer.parseInt(strhour) != hour) {
          incNok();
          System.out.println(new Date() + " nokcnt = " + nok + " thread-no=" + this.threadCnt + " soll=" + hour + " ist="
+ strhour);
          if (this.nok >= 1000) {
            System.out.println("nokcnt = " + this.nok + " ==> aborted");
            System.exit(-1);
          }
        } else {
          resetNok();
          if (cnt % 10000 == 0) {
                cnt = 0;
                System.out.println("treadCnt=" + threadCnt + " ok");
          }
        }
    }
  }

  private static long nok = 0;
  private static synchronized void incNok() {
        nok++;
  }
  private static synchronized void resetNok() {
        nok = 0;
  }

  public static void main(String[] args) {
        System.out.println(new Date());
        for (int i = 0; i < 100; i++) {
          SimpleJavaUtilDateTest1 sct = new SimpleJavaUtilDateTest1(i);
          new Thread(sct).start();
        }
  }
}


2. Compile:
-----------
% /j2sdk1_3_1_08/bin/java -version
java version "1.3.1_08"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_08-b03)
Java HotSpot(TM) Client VM (build 1.3.1_08-b03, mixed mode)
% /j2sdk1_3_1_08/bin/javac SimpleJavaUtilDateTest1.java
Note: SimpleJavaUtilDateTest1.java uses or overrides a deprecated API.
Note: Recompile with -deprecation for details.
%
% /j2sdk1_3_1_08/bin/javac -deprecation SimpleJavaUtilDateTest1.java
SimpleJavaUtilDateTest1.java:34: warning: Date(int,int,int,int,int,int) in java.util.Date has been deprecated
        Date date = new Date(103, 05, 30, hour, 15, 10);
                    ^
1 warning
%


3. Run
------

% /j2sdk1_3_1_08/bin/java -version
java version "1.3.1_08"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_08-b03)
Java HotSpot(TM) Client VM (build 1.3.1_08-b03, mixed mode)
% /j2sdk1_3_1_08/bin/java SimpleJavaUtilDateTest1
Mon Jul 07 15:39:25 CEST 2003
[ takes some seconds until first output appears ]
treadCnt=38 ok
treadCnt=25 ok
treadCnt=72 ok
treadCnt=6 ok
treadCnt=16 ok
treadCnt=45 ok
treadCnt=17 ok
treadCnt=67 ok
treadCnt=82 ok
treadCnt=80 ok
treadCnt=28 ok
treadCnt=44 ok
[ runs for several hous until problem shows ... ]
treadCnt=88 ok
treadCnt=66 ok
treadCnt=91 ok
treadCnt=0 ok
treadCnt=36 ok
treadCnt=10 ok
treadCnt=26 ok
treadCnt=44 ok
treadCnt=77 ok
treadCnt=96 ok
treadCnt=5 ok
treadCnt=29 ok
treadCnt=8 ok
treadCnt=17 ok
treadCnt=13 ok
treadCnt=86 ok
treadCnt=19 ok
treadCnt=60 ok
treadCnt=65 ok
treadCnt=83 ok
treadCnt=90 ok
treadCnt=46 ok
treadCnt=21 ok
treadCnt=38 ok
Mon Jul 07 23:55:07 CEST 2003 nokcnt = 1 thread-no=42 soll=4 ist=00
Mon Jul 07 23:55:07 CEST 2003 nokcnt = 2 thread-no=42 soll=5 ist=00
Mon Jul 07 23:55:07 CEST 2003 nokcnt = 3 thread-no=42 soll=1 ist=00
Mon Jul 07 23:55:07 CEST 2003 nokcnt = 4 thread-no=42 soll=2 ist=00
Mon Jul 07 23:55:07 CEST 2003 nokcnt = 5 thread-no=42 soll=3 ist=00
Mon Jul 07 23:55:07 CEST 2003 nokcnt = 6 thread-no=42 soll=4 ist=00
Mon Jul 07 23:55:07 CEST 2003 nokcnt = 7 thread-no=42 soll=5 ist=00
Mon Jul 07 23:55:07 CEST 2003 nokcnt = 8 thread-no=42 soll=1 ist=00
Mon Jul 07 23:55:07 CEST 2003 nokcnt = 9 thread-no=42 soll=2 ist=00
[ ... ]

Mon Jul 07 23:55:08 CEST 2003 nokcnt = 818 thread-no=32 soll=2 ist=00
Mon Jul 07 23:55:08 CEST 2003 nokcnt = 818 thread-no=98 soll=3 ist=00
Mon Jul 07 23:55:08 CEST 2003 nokcnt = 818 thread-no=47 soll=4 ist=00
Mon Jul 07 23:55:08 CEST 2003 nokcnt = 818 thread-no=20 soll=2 ist=00
nokcnt = 1000 ==> aborted
%

Return code is 255.