Strange result of SimpleDateFormat.parse()

Hi,
I'm having trouble with the parse data function as it does not return the correct hour.
Here is what I'm doing:
Date nullDate = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ").parse("1900-01-01T00:00:00-0000");I would now expect nullDate to be Mon Jan 01 00:00:00 CET 1900
But instead, it is Mon Jan 01 00:09:21 CET 1900
Personally I cannot think of a reason why the time is not 0.
Any ideas?

I don't see the problem you see. What version of Java on what OS and in what time zone?
P.S. I would certainly set the time zone for the parser i.e.
       SimpleDateFormat parser = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
        parser.setTimeZone(TimeZone.getTimeZone("UTC"));
        Date nullDate = parser.parse("1900-01-01T00:00:00-0000");
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z");
        System.out.println(formatter.format(nullDate));On my Ubuntu 10.04 using JDK 1.6.0_20 in London (currently GMT) time zone I get
1900-01-01 00:00:00 GMT

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Strange problem with SimpleDateFormat.parse method

I got something strange with this method.
String pattern = "yyyy/MM/dd";
String mydate = "2007/00/10";
SimpleDateFormat formatter = new SimpleDateFormat(pattern);
Date newdate = formatter.parse(mydate);
I get "2006/12/10"
is this correct.

dongyisu wrote:
and there no exception get thrown outYes it does. I ran this:
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class DateFormatTest
   public static final String DEFAULT_DATE_FORMAT = "yyyy/MM/dd";
   public static void main(String[] args)
      DateFormat formatter = new SimpleDateFormat(DEFAULT_DATE_FORMAT);
      formatter.setLenient(false);
      for (int i = 0; i < args.length; ++i)
         try
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catch (ParseException e)
System.err.println(args[i] + " is not a valid date");
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Process finished with exit code 0%

Strange result from insert into...select query

Hello guys,
I need your preciuos help for a question maybe simple, but that I can't explain by myself!
I have a query of "insert into...select" that, as I have explained in the title, returns a strange result. In facts, If I execute ONLY the SELECT statement the query returns the expected result (so 2 rows); instead If I execute the entire statement, that is the "insert into...select", the query returns 0 rows inserted!!
Following an example of the query:
INSERT
INTO TITOLI_ORI
COD_TITOLO_RICCONS ,
D_ESTRAZIONE ,
COD_SOCIETA ,
COD_PIANO_CONTABILE ,
COD_CONTO_CONTABILE ,
COD_RUBRICATO_STATISTICO_1 ,
COD_NDG ,
NUM_ESEGUITO ,
CUR_IMPORTO_RICCONS ,
CUR_IMPORTO_BICO ,
FLG_MODIFICATO ,
CUR_NON_ASSEGNATO ,
FLG_QUOTATO ,
COD_CATEG ,
TIP_COPERTURA ,
TIPTAS_TITOLO
SELECT NEWID,
'28-feb-2111',
COD_SOCIETA,
COD_PIANO_CONTABILE,
COD_CONTO_CONTABILE,
COD_RUBRICATO_STATISTICO_1,
COD_NDG,
NUM_ESEGUITO,
CUR_VAL_IMPEGNI,
'ABC' as CUR_IMPORTO_BICO,
0 as FLG_MODIFICATO,
NULL as CUR_NON_ASSEGNATO,
FLG_QUOTATO,
COD_CATEG,
TIP_COPERTURA,
TIP_TASSO
FROM
(SELECT S.COD_SOC AS COD_SOCIETA,
S.TIP_PIANO_CNTB AS COD_PIANO_CONTABILE,
S.COD_CONTO_CNTB AS COD_CONTO_CONTABILE,
S.COD_RUBR_STAT AS COD_RUBRICATO_STATISTICO_1,
TRC.COD_RAGGR_IAS AS COD_RAGGRUPPAMENTO_IAS,
TRC.COD_NDG AS COD_NDG,
TRC.COD_ESEG AS NUM_ESEGUITO,
CAST((TRC.IMP_PLUS_MINUS_VAL/TRC.IMP_CAMB) AS FLOAT) AS CUR_VAL_IMPEGNI,
TRC.TIP_QUOTAZ AS FLG_QUOTATO,
TRC.COD_CAT_TIT AS COD_CATEG,
TIP_COP AS TIP_COPERTURA,
T.TIP_TASSO AS TIP_TASSO
FROM S_SLD_CNTB S
INNER JOIN
(SELECT DISTINCT COD_SOC,
TIP_PIANO_CNTB,
COD_CONTO_CNTB,
COD_RUBR_STAT ,
COD_INTER_TIT AS COD_INTER
FROM S_COLLEG_CONTO_CNTB_TIT
WHERE COD_SOC = 'ME'
) CCC
ON S.COD_SOC = CCC.COD_SOC
AND S.TIP_PIANO_CNTB = CCC.TIP_PIANO_CNTB
AND S.COD_CONTO_CNTB = CCC.COD_CONTO_CNTB
AND S.COD_RUBR_STAT = CCC.COD_RUBR_STAT
INNER JOIN S_TIT_RICCONS TRC
ON CCC.COD_INTER = TRC.COD_INTER_TIT
AND CCC.COD_SOC = TRC.COD_SOC
AND TRC.COD_RAGGR_IAS = RTRIM('VALUE1 ')
AND TRC.COD_RAGGR_IAS NOT IN ('VALUE2')
AND TRC.DES_TIP_SLD_TIT_RICCONS IN ('VALUE3')
AND TRC.DES_MOV_TIT = RTRIM('VALUE4 ')
AND TRC.COD_CAT_TIT = RTRIM('VALUE4 ')
AND TRC.COD_INTER_TIT = RTRIM('VALUE5')
AND '28-feb-2011' = TRC.DAT_RIF
LEFT JOIN S_TIT T
ON T.COD_INTER_TIT = TRC.COD_INTER_TIT
AND T.COD_SOC = TRC.COD_SOC
AND '28-feb-2011' = T.DAT_RIF
INNER JOIN S_ANAG_SOGG AG
ON TRC.COD_NDG = AG.COD_NDG
AND AG.COD_SOC = TRC.COD_SOC
AND '28-feb-2011' = AG.DAT_RIF
WHERE S.DAT_RIF = '28-feb-2011'
AND (S.FLG_ANULL_BICO = 0
OR S.FLG_ANULL_BICO IS NULL)
AND S.COD_SOC = 'V6'
AND LENGTH(RTRIM(S.COD_CONTO_CNTB)) = 10
AND S.TIP_PIANO_CNTB = 'V7'
AND TRC.IMP_PLUS_MINUS_VAL < 0
AND SUBSTR(S.COD_CONTO_CNTB,1,7) IN (RTRIM('VALUE8 '))
Thanks a lot

Right, I have executed this steps:
- I have changed the query with the select count(*)
- Changed the insert into with the select count(*)
- Executed the insert into
These are the result:
SQL> select count(*) from TITOLI_ORI2;
COUNT(*)
1
BUT:
SQL> select * from TITOLI_ORI2;
A
0
The insert into that I've modified is this:
INSERT INTO bsc.TITOLI_ORI2
select count(*)
FROM
(SELECT bsc.NEWID,
TO_DATE('28-feb-2111','DD-MON-YYYY') as data,
COD_SOCIETA,
COD_PIANO_CONTABILE,
COD_CONTO_CONTABILE,
COD_RUBRICATO_STATISTICO_1,
COD_NDG,
NUM_ESEGUITO,
CUR_VAL_IMPEGNI,
'ABC' AS CUR_IMPORTO_BICO,
0 AS FLG_MODIFICATO,
NULL CUR_NON_ASSEGNATO,
FLG_QUOTATO,
COD_CATEG,
TIP_COPERTURA,
TIP_TASSO
FROM
(SELECT S.COD_SOC AS COD_SOCIETA,
S.TIP_PIANO_CNTB AS COD_PIANO_CONTABILE,
S.COD_CONTO_CNTB AS COD_CONTO_CONTABILE,
S.COD_RUBR_STAT AS COD_RUBRICATO_STATISTICO_1,
TRC.COD_RAGGR_IAS AS COD_RAGGRUPPAMENTO_IAS,
TRC.COD_NDG AS COD_NDG,
TRC.COD_ESEG AS NUM_ESEGUITO,
CAST((TRC.IMP_PLUS_MINUS_VAL/TRC.IMP_CAMB) AS FLOAT) AS CUR_VAL_IMPEGNI,
TRC.TIP_QUOTAZ AS FLG_QUOTATO,
TRC.COD_CAT_TIT AS COD_CATEG,
TIP_COP AS TIP_COPERTURA,
T.TIP_TASSO AS TIP_TASSO
FROM bsc.S_SLD_CNTB S
INNER JOIN
(SELECT DISTINCT COD_SOC,
TIP_PIANO_CNTB,
COD_CONTO_CNTB,
COD_RUBR_STAT ,
COD_INTER_TIT AS COD_INTER
FROM bsc.S_COLLEG_CONTO_CNTB_TIT
WHERE COD_SOC = 'ME'
) CCC
ON S.COD_SOC = CCC.COD_SOC
AND S.TIP_PIANO_CNTB = CCC.TIP_PIANO_CNTB
AND S.COD_CONTO_CNTB = CCC.COD_CONTO_CNTB
AND S.COD_RUBR_STAT = CCC.COD_RUBR_STAT
INNER JOIN bsc.S_TIT_RICCONS TRC
ON CCC.COD_INTER = TRC.COD_INTER_TIT
AND CCC.COD_SOC = TRC.COD_SOC
AND TRC.COD_RAGGR_IAS = RTRIM('HFT ')
AND TRC.COD_RAGGR_IAS NOT IN ('GPO')
AND TRC.DES_TIP_SLD_TIT_RICCONS IN ('DISPONIBILI')
AND TRC.DES_MOV_TIT = RTRIM('CONSEGNARE ')
AND TRC.COD_CAT_TIT = RTRIM('OBBLIGAZIONE ')
AND TRC.COD_INTER_TIT = RTRIM('334058')
AND '28-feb-2011' = TRC.DAT_RIF
LEFT JOIN bsc.S_TIT T
ON T.COD_INTER_TIT = TRC.COD_INTER_TIT
AND T.COD_SOC = TRC.COD_SOC
AND '28-feb-2011' = T.DAT_RIF
INNER JOIN bsc.S_ANAG_SOGG AG
ON TRC.COD_NDG = AG.COD_NDG
AND AG.COD_SOC = TRC.COD_SOC
AND '28-feb-2011' = AG.DAT_RIF
WHERE S.DAT_RIF = '28-feb-2011'
AND (S.FLG_ANULL_BICO = 0
OR S.FLG_ANULL_BICO IS NULL)
AND S.COD_SOC = 'ME'
AND LENGTH(RTRIM(S.COD_CONTO_CNTB)) = 10
AND S.TIP_PIANO_CNTB = 'IS'
AND TRC.IMP_PLUS_MINUS_VAL < 0
AND SUBSTR(S.COD_CONTO_CNTB,1,7) IN (RTRIM('P044C11 '))
Another time the strange result returns!!
And I've created the table TITOLI_ORI2 as create table TITOLI_ORI2 (a number); to contain the number result of the query.

Strange symbols appear on my desktop, producing even stranger results!

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Help - count function returns strange results

hi everyone,
here's my scenario: i'm trying to get the NUMBER OF REPORTS and NUMBER OF
IMAGES GROUP BY MONTH from the two tables below.
REPORT
reportid(*primary key)
date
IMAGE
reportid(*foreign key referring to report's table)
image
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feb 01 10 9
mar 01 12 8
my SQL goes like this:
select to_char(date, 'month-yy'),
count(REPORT.reportid), count(IMAGE.reportid)
from REPORT, IMAGE
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the above sql yielded strange results, number of images is equal to the number of reports, which is of course wrong! as one report may or may not contain one or more image.
i dont know what's wrong with the above statement, but if i were to group it
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try using the following example:
Table TEST_REPORT
RPTID RPTDATE
1 02-JAN-01
3 02-JAN-01
2 02-JAN-01
5 11-FEB-01
6 11-FEB-01
7 11-FEB-01
Table TEST_IMAGE
RPTID IM
1 1
2 1
3 1
SQL:
select to_char(rptdate,'MON-YYYY'),
sum(decode(a.rptid,null,0,1)) report_cnt,
sum(decode(b.rptid,null,0,1)) image_cnt
from test_report a, test_image b
where a.rptid = b.rptid(+)
group by to_char(rptdate,'MON-YYYY');
<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by skcedric:
hi everyone,
here's my scenario: i'm trying to get the NUMBER OF REPORTS and NUMBER OF
IMAGES GROUP BY MONTH from the two tables below.
REPORT
reportid(*primary key)
date
IMAGE
reportid(*foreign key referring to report's table)
image
sample output:
MONTH NO.OF REPORTS NO. OF IMAGES
feb 01 10 9
mar 01 12 8
my SQL goes like this:
select to_char(date, 'month-yy'),
count(REPORT.reportid), count(IMAGE.reportid)
from REPORT, IMAGE
where REPORT.reportid = IMAGE.reportid
group by to_char(date, 'month-yy')
the above sql yielded strange results, number of images is equal to the number of reports, which is of course wrong! as one report may or may not contain one or more image.
i dont know what's wrong with the above statement, but if i were to group it
by REPORTID and DAY rather than MONTH, then amazingly it works! what's
wrong with the count, why does it give me the same result if i group by
MONTH.
can anyone shed some light on this? <HR></BLOCKQUOTE>
null

Strange result about regular expressions

Hello everybody,
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Environnement:
WindowsXP Home + NetBeans IDE 5.0 + JDK 1.5
Input String:
"I write these codes to try regular expressions in Java, but it doesn't work. I read some reference like Sun Java Tutorials. Then, always cann't find the problem. Could you help me? Thanks."
My codes:
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P.rintln("Let's go!");
Date start = new Date();
if(args.length != 1) {
P.rintln("Input Error! Input format: java javaclass [directory path]");
System.exit(0);
StringBuffer sb = new StringBuffer();
String input = TextFile.read(args[0]);
sb = addSectionEelement(input, "re");
P.rintln(sb.toString());
P.rintln("Ok, it's over");
Date end = new Date();
System.out.println("It spends " + (end.getTime() - start.getTime()) + " ms.");
public static StringBuffer addSectionEelement(String input, String regex) {
Matcher m = Pattern.compile(regex).matcher(input);
StringBuffer sb = new StringBuffer();
int count = 0;
while(m.find()) {
count++;
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Let's go!
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Ok, it's over
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BUILD SUCCESSFUL (total time: 0 seconds)
However if I change the Bold line by
sb = addSectionEelement(input, "r");
The resultats become:
run:
Let's go!
r
r
r
r
r
r
r
r
r
r
r
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Ok, it's over
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BUILD SUCCESSFUL (total time: 0 seconds)
I have no idea about it. And you?
Thanks

Hi guys,
I re-examine the codes. In fact, it's the problem of encodings of the input file.
See u

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Edited by: Pramod Verma on Mar 5, 2013 4:59 AM
Updated query and added more details

>
Since I am using Trunc() in the where clause so timing should not matter much. Also I manually ruled out records which were updated after the job run.
>
The first rule of troubleshooting is to not let your personal opinion get in the way of finding out what is wrong.
Actually this code, and the process it represents, is the most likely CAUSE of the problem.
>
where trunc(updated_date) > = trunc(sysdate-3)
>
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>
Job timing is 4am and 10pm EST
>
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Message was edited by: adamsquire

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                    Date date = formatter.parse(dateString);
                    System.out.println("Success! The date is: "+date.toString());
               } catch (ParseException e) {
                    System.out.println(dateString + " has error index of: " + e.getErrorOffset());
          //out of curiousity, lets see the String representation of the current date & time
          Date now = new Date();
          String currentDate = formatter.format(now);
          System.out.println("\nThe current date as a String: "+currentDate);
          System.out.println("\n");
     private static void test2() {
          System.out.println("**** TEST 2 ****\n");
          DateFormat formatter = new SimpleDateFormat(DATE_FORMAT);
          formatter.setLenient(false); //want to check that dates are valid
          //lets make the timezone +0800
          formatter.setTimeZone(new SimpleTimeZone(8 * HOUR, "GMT")); //8 hour offset
          for (String dateString : TEST_DATA) {
               try {
                    Date date = formatter.parse(dateString);
                    System.out.println("Success! The date is: "+date.toString());
               } catch (ParseException e) {
                    System.out.println(dateString + " has error index of: " + e.getErrorOffset());
          System.out.println("\nSuccess for the first date. Why? The timezone of the formatter matches the date.");
          System.out.println("\n");
     private static void test3() {
          System.out.println("**** TEST 3 ****\n");
          DateFormat formatter = new SimpleDateFormat(DATE_FORMAT);
          formatter.setLenient(false); //want to check that dates are valid
          for (String dateString : TEST_DATA) {
               try {
                    //lets set a timezone for each individual date
                    int length = dateString.length();
                    int gmtMinutes = Integer.parseInt(dateString.substring(length-2, length));
                    int gmtHours = Integer.parseInt(dateString.substring(length-4, length-2));
                    int timeZone = gmtMinutes * MINUTE + gmtHours * HOUR;
                    timeZone = dateString.charAt(length-5) == '+' ? timeZone : -timeZone;
                    formatter.setTimeZone(new SimpleTimeZone(timeZone, "GMT"));
                    Date date = formatter.parse(dateString);
                    System.out.println("Success! The date is: "+date.toString());
               } catch (ParseException e) {
                    System.out.println(dateString + " has error index of: " + e.getErrorOffset());
}-Muel

Date objects don't have time zones.
This is true, my problem was that I needed to parse both the Date and the TimeZone from a String. I got misled by the SimpleDateFormat documentation (the symbol Z), and somehow got the impression that a Date should have an associated TimeZone!
In hindsight, it is clear that Z should be used for Date strings containing a timezone and that SimpleDateFormat uses the timezone to modify the Date so that it's correct for the timezone of the current machine. If that makes sense!
-Muel

STRANGER RESULT

Hi, the code below maps some objects to a key and then buts that key in to a linked list. When I compile and run this program I get a strange result can you help me please(note that more code is involved)
public class Subsets {
     //Vector v = new Vector();
     Properties ht = new Properties();
     LinkedList ll = new LinkedList();
     ArrayList al1, al2, al3, al4, al5, al6, al7, al8;
     String           key = null;
     String           key2;
     int          intKey;
     //Card          cd[];
ArrayList newArr = null;
     //Card vectArray[];
     //Card cd1[], cd2[], cd3[], cd4[], cd5[], cd6[], cd7[], cd8[];
public ArrayList permutations(Hand dk, Hand comp){
     for (int f=0; f < dk.getCardCount(); f++){
          key = String.valueOf(dk.getCard(f).getValue());
          al1 = new ArrayList();
          al1.add(dk.getCard(f));
          ll.add(ht.put(key,al1));
          for (int s=f+1; s < dk.getCardCount(); s++){
               key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue());
               al2 = new ArrayList();
               al2.add(dk.getCard(f));
               al2.add(dk.getCard(s));
               ll.add(ht.put(key, al2));
               //v.addElement(ht.put(key,cd2));
               for (int t=s+1; t < dk.getCardCount(); t++){
                    key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue());
                    al3 = new ArrayList();
                    al3.add(dk.getCard(f));
                    al3.add(dk.getCard(s));
                    al3.add(dk.getCard(t));
                    ll.add(ht.put(key,al3));
                    //v.addElement(ht.put(key,cd3));
                    for (int a=t+1; a < dk.getCardCount(); a++){
                         key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue()+dk.getCard(a).getValue());
                         al4 = new ArrayList();
                         al4.add(dk.getCard(f));
                         al4.add(dk.getCard(s));
                         al4.add(dk.getCard(t));
                         al4.add(dk.getCard(a));
                         ll.add(ht.put(key,al4));
                         //v.addElement(ht.put(key,cd4));
                         for (int b=a+1; b < dk.getCardCount(); b++){
                              key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue()+dk.getCard(a).getValue()+dk.getCard(b).getValue());
                              al5 = new ArrayList();
                              al5.add(dk.getCard(f));
                              al5.add(dk.getCard(s));
                              al5.add(dk.getCard(t));
                              al5.add(dk.getCard(a));
                              al5.add(dk.getCard(b));
                              ll.add(ht.put(key,al5));
                              //v.addElement(ht.put(key,cd5));
                              for (int c=b+1; c < dk.getCardCount(); c++){
                                   key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue()+dk.getCard(a).getValue()+dk.getCard(b).getValue()+dk.getCard(c).getValue());
                                   al6 = new ArrayList();
                                   al6.add(dk.getCard(f));
                                   al6.add(dk.getCard(s));
                                   al6.add(dk.getCard(t));
                                   al6.add(dk.getCard(a));
                                   al6.add(dk.getCard(b));
                                   al6.add(dk.getCard(c));
                                   ll.add(ht.put(key,al6));
                                   //v.addElement(ht.put(key,cd6));
                                   for (int d=c+1; d < dk.getCardCount(); d++){
                                        key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue()+dk.getCard(a).getValue()+dk.getCard(b).getValue()+dk.getCard(c).getValue()+dk.getCard(d).getValue());
                                        al7 = new ArrayList();
                                        al7.add(dk.getCard(f));
                                        al7.add(dk.getCard(s));
                                        al7.add(dk.getCard(t));
                                        al7.add(dk.getCard(a));
                                        al7.add(dk.getCard(b));
                                        al7.add(dk.getCard(c));
                                        al7.add(dk.getCard(d));
                                        ll.add(ht.put(key,al7));
                                        //v.addElement(ht.put(key,cd7));
                                        for (int e=d+1; e < dk.getCardCount(); e++){
                                             key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue()+dk.getCard(a).getValue()+dk.getCard(b).getValue()+dk.getCard(c).getValue()+dk.getCard(d).getValue()+dk.getCard(e).getValue());
                                             al8 = new ArrayList();
                                             al8.add(dk.getCard(f));
                                             al8.add(dk.getCard(s));
                                             al8.add(dk.getCard(t));
                                             al8.add(dk.getCard(a));
                                             al8.add(dk.getCard(b));
                                             al8.add(dk.getCard(c));
                                             al8.add(dk.getCard(d));
                                             al8.add(dk.getCard(e));
                                             ll.add(ht.put(key,al8));
                                             //v.addElement(ht.put(key,cd8));
     Iterator itr = ll.iterator();
     first:{
          while(itr.hasNext()){
// key2 = String.valueOf(itr.next());
//System.out.println("key2 : "+key2);
System.out.println("size "+ll.size());
System.out.println("next "+itr.next());
// intKey = Integer.parseInt(key2);
               //for(int j=comp.getCardCount()-1; j>=0;j++){
               //     if(intKey == comp.getCard(j).getValue()){
               //          newArr = (ArrayList)ht.get(key2);
               //          break first;
          if(!itr.hasNext()){
               newArr = null;
newArr = (ArrayList)ht.get(key2);
     return newArr;
the result that I get is as follows
Cards on the table are:
0. 6 of Hearts
1. 7 of Hearts
2. 4 of Spades
3. Jack of Spades
4. 7 of Spades
Its r's turn
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next [6 of Hearts, 7 of Hearts, 4 of Spades, Jack of Spades]
size 31
next [6 of Hearts, 7 of Hearts, 4 of Spades]
size 31
next null
size 31
next [6 of Hearts, 7 of Hearts, Jack of Spades]
size 31
next [6 of Hearts, 7 of Hearts]
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next [6 of Hearts, 4 of Spades, Jack of Spades]
size 31
next null
size 31
next null
size 31
next [6 of Hearts, Jack of Spades]
size 31
next null
size 31
next null
size 31
next [7 of Hearts, 4 of Spades, Jack of Spades]
size 31
next [7 of Hearts, 4 of Spades]
size 31
next null
size 31
next [7 of Hearts, Jack of Spades]
size 31
next [7 of Hearts]
Exception in thread "main" java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java:320)
at Subsets.permutations(Subsets.java:124)
at PlayScopa.computerTurn(PlayScopa.java:273)
at PlayScopa.scopaPlay(PlayScopa.java:133)
at PlayScopa.scopaStart(PlayScopa.java:89)
at MainApp.main(MainApp.java:29)
[u9zuh /home/stud3/csc99/u9zuh]$
why are there gaps here
not the for loops are as follows
for(){
......for(){
.............for(){
.....................etc.....

It's telling you exactly where the problem is:
Exception in thread "main" java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java:320)
at Subsets.permutations(Subsets.java:124)
at PlayScopa.computerTurn(PlayScopa.java:273)
at PlayScopa.scopaPlay(PlayScopa.java:133)
at PlayScopa.scopaStart(PlayScopa.java:89)
at MainApp.main(MainApp.java:29)
What code is at line 124 of Subsets?
When you figure out what line that is (use your IDE - Control-G often lets you type in a line number) look at the variables used on that line and see which one(s) hasn't been assigned a value.

Java.util.text.SimpleDateFormat.parse strange behavior

Wow !
if I parse "10/14/2002" I get "0/2/2003", that is, the month 14 is considered 12 (december) + 2 additional months and therefore february in the next year!!
any idea ?
Paolo Denti
=============================
public class Test {
public static void main(String[] args) {
java.util.Date testDate = null;
java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat("dd-MM-yyyy");
try {
testDate = formatter.parse("10-14-2002");
catch (java.text.ParseException e) {
System.out.println("Data scassata: " + e.getMessage());
System.exit(1);
System.out.println(testDate.toString());
=================================
prints "Mon Feb 10 00:00:00 CET 2003"

Tryformatter.setLenient(false);if you do not want this behaviour.

Strange result of SimpleDateFormat.parse()

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