I NEED HELP!!!. with complex numbers

Hi, I need your help on creating a class called Complex for storing and performing arithmetic operations on a complex number. I am very new using java. The header of the problems is as follow:
Create a class called complex for storing and performing arithmetic operations on a complex number. Private data members should be provided to store the real and imaginary parts of the Complex object. Provide two constructor methods: one with no arguments that initializes the Complex object to 0 + 0i, and one that enables an object of this class to be initialized with arguments when it is created. Inclued public member functions to:
- Imput a Complex number from the Keyboard.
- "add" two Complex arguments and store the sum in the current Complex object.
- "substract" two Complex arguments and store the difference in the current Complex object.
- "multiply" two Complex arguments and store the product in the current Complex object.
-a toString() method that returns a String displaying a Complex object in the form a + bi, (when a is different than 0 and b is different than 0).
I will appreciate your help about how i can create a constructor method that initialize the complex object to 0 + 0i.
I am really stuck in creating the constructor for using it in the add, substrac, and multiply method. Another problem that i have is that when a user enter a complex number, they are going to enter as
(3.2 + 2.7i) so what i am going to do with the "i"?
I really appreciate your help.!!! thank you....

I don't understand how I am goint to create a
constructor with no arguments that initializes the
Complex object to 0 + 0i.
Should it be like:
public Complex()
real = 0,0;
imaginary = 0,0;
What I thinks is that I need to have something like:
public Complex()
cplx = real + imaginaryi
then if I do this like I showed before, then what I am
goint to do with the "i" in the imaginary part. Is
there another way to do this or I am wrong or not
understanding the concept?You've got a good start, but you seem to be missing a little bit.
Your first constructor is good.
You seem to thing the second constructor "...that enables an object of this class to be initialized with arguments when it is created" needs to take the string "3 + 4i". You may want to clarify with your instructor, but I don't think that's necessary. Instead, it should probably just take two float or double arguments--one for the real part and one for the imaginary part.
public Complex(you need params here--I'll let you figure out what they are)Try that first, then work on the arithmetic and printing operations.

Similar Messages

Need help with complex numbers ..

Hi!
Just want to check if i got it right - if anyone could pls confirm:
public void divComplex(Complex a, Complex b)
x = ((a.x * b.x) + (a.y * b.y))/((b.x * b.x) + (b.y * b.y));
y = ((a.y * b.x) + (a.x * b.x))/((b.x * b.x) + (b.y * b.y));
public void multComplex(Complex a, Complex b)
x = ((a.x * b.x) - (a.y * b.y));
y = ((a.x * b.y) + (a.y * b.x));
where:
protected double x;
protected double y;
is declared to represent the complex number .
Is this correct?
Siw

For the division you have,
a/b = a*b'/b*b' = a*b'/|b|
|b| = (b.x + ib.y)*(b.x - ib.y) = b.x*b.x + b.y*b.y
a*b' = (a.x + ia.y)*(b.x - ib.y) =
(a.x*b.x + a.y*b.y) + i(a.y*b.x - a.x*b.y)
There seems to be a slight mistake in the imaginary part (y).
y = a.y*b.x - a.x*b.y / (b.x*b.x + b.y*b.y);
But don't take my word for it. It's been ages since I did complex numbers -:)

Need help with complex column creation command

Hello, all
I need help with a complex column creation command and SQL anywhere help is not sufficient for it.
Here is the situation:
I need to write a generic DDL "alter table" command, which can add/modify columns without knowing in advance if they already exist in the destination table.
Is there a command, which looks like:
alter table "table1" add (on existing modify) column1 <datatype> <default> ?
Thank you,
Arcady

Hi.
I don't think this is supported in alter table command. But you can code that inside an if statement which queries systables & syscolumns. Your code should be something like that:
if (select count(*) from sysobjects, syscolumns where sysobjects.id = syscolumns.id and sysobjects.name = 'some_table' and syscolumns.name = 'some_column') < 1
begin
alter table some_table add some_column numeric(12) not null
end
This is an example..
Andreas.

Need Help with complex query and computing values

I have an issue trying to combine data from several tables. I need help trying to compute the "Total Hours", "Max Pressure" ,"Average Pressure" while displaying the "Manufacturer",
"Part Type" , "Serial Number", "District", "Status","Truck Type",and "truck number" for a certain Part on all Trucks. I need to be able check and see if the serial number was on
a particular job and calculate the hours of that serial number if it was on that job and the jobdate falls between the install date and removal date. Ive tried but keep getting either
repeating rows, total hrs of the truck instead of the serial number. Ive considered doing a pivot to display it but have been having trouble putting it together.
table 1
(*records of parts*)
Contains serial number,truck number, part type, part number, install date, removal date, status
table 2
(*records of Jobs*)
contains Jobnumber, JobStartdate, Max pressure, average pressure, and Totalhrs
table 3
(records related to jobs and trucks)
contains jobnumber, district , and truck numbers
Table 4
(records of manufacturers and part numbers)
contains partnumber, manufacturer name, and truck type
I would like to get it to show like below
SerialNo   PrtType
MFG      TruckNo
TrkType    TtlHrs
   MaxPr   AvgPr
  Status
Dst
AB345     1200series
NGK        2G34
Boss X       400     10,000
9500  NonOp
NE
Thanks in advance

Hope this helps
Note: (Date of Mar 1 2014 was just extended to a further date so the system would know that its still operating when calculating current hours)
Table 1
SerialNo    TruckNo InstallDate RemovalDate      Status       PartNo      PartType
BJ1002       F917   2013-09-17   2014-03-01   Oper         L871235       BJ 3000 GL
CWS1002   F104   2012-11-21 2013-03-29   NonOper   L76088-450 CWS 2000
CWS1003   F104   2013-04-24   2013-08-01   NonOper   L76088-450 CWS 2000
CWS1005   F187   2012-11-21 2013-04-04   NonOper   L76088-450   CWS 2000
CWS1006   F187 2013-04-24   2013-06-30   NonOper   L76088-450 CWS 2000
CWS1007   F187   2013-06-30   2013-03-01   Oper        L76088-450 CWS 2000
CWS1009   2F60   2013-05-05   2013-03-01   Oper        L76088-450 CWS 2000
CWS1011   F809   2013-05-28   2013-08-28   NonOper   L76088-400 CWS 2000
CWS1013   F990 2013-06-11 2013-10-29   NonOper   L76088-450   CWS 2000
CWS1015   F783   2013-06-28   2013-03-01   Oper        L76088-450 CWS 2000
Table 2
JobNumber   Date                 District        PrAvTreat PrMaxTr TotalHrs
553811287   2012-01-19    Fairmount   7337        8319     1.53
652110088    2012-08-20    San Antonio 6340       7075      0.47
652110090    2012-08-21    San Antonio 6134       7131      0.62
652110091    2012-08-22    San Antonio 6180       2950      0.58
652110092    2012-08-23    San Antonio  5959       6789      0.64
652110093    2012-08-23    San Antonio 6165       7466      0.62
Table 3
TruckNo District    JobNumber
1F01      Odessa 10011012329
1F01      Odessa   10011012333
1F01      Odessa   10011014831
1F01      Odessa   10011014834
1F01      Odessa   10011012332
1F01      Odessa   10011012328
1F01      Odessa   10011014829
Table 4
PartNumber    Manufacturer  TruckType
L322020-2     Jimmy Dean   Ford T
L322738-2     Lucas             Ford T
L47869-1       Jimmy Dean   Ford T
L76070-650   NGK               Ford T
Sam Howard

Newbie needing help with code numbers and if-else

I'm 100% new to any kind of programming and in my 4th week of an Intro to Java class. It's also an on-line class so my helpful resources are quite limited. I have spent close to 10 hours on my class project working out P-code and the java code itself, but I'm having some difficulty because the project seems to be much more advanced that the examples in the book that appear to only be partly directly related to this assignment. I have finally come to a point where I am unable to fix the mistakes that still show up. I'm not trying to get anyone to do my assignment for me, I'm only trying to get some help on what I'm missing. I want to learn, not cheat.
Okay, I have an assignment that, in a nutshell, is a cash register. JOptionPane prompts the user to enter a product code that represents a product with a specific price. Another box asks for the quanity then displays the cost, tax and then the total amount plus tax, formatted in dollars and cents. It then repeats until a sentinel of "999" is entered, and then another box displays the total items sold for the day, amount of merchandise sold, tax charged, and the total amount acquired for the day. If a non-valid code is entered, I should prompt the user to try again.
I have this down to 6 errors, with one of the errors being the same error 5 times. Here are the errors:
C:\PROGRA~1\XINOXS~1\JCREAT~1\MyProjects\Sales.java:50: 'else' without 'if'
else //if invalid code entered, output message
^
C:\PROGRA~1\XINOXS~1\JCREAT~1\MyProjects\Sales.java:39: unexpected type
required: variable
found : value
100 = 2.98;
^
C:\PROGRA~1\XINOXS~1\JCREAT~1\MyProjects\Sales.java:41: unexpected type
required: variable
found : value
200 = 4.50;
^
C:\PROGRA~1\XINOXS~1\JCREAT~1\MyProjects\Sales.java:43: unexpected type
required: variable
found : value
300 = 6.79;
^
C:\PROGRA~1\XINOXS~1\JCREAT~1\MyProjects\Sales.java:45: unexpected type
required: variable
found : value
400 = 5.29;
^
C:\PROGRA~1\XINOXS~1\JCREAT~1\MyProjects\Sales.java:47: unexpected type
required: variable
found : value
500 = 7.20;
^
And finally, here is my code. Please be gentle with the criticism. I've really put a lot into it and would appreciate any help. Thanks in advance.
import java.text.NumberFormat; // class for numeric formating from page 178
import javax.swing.JOptionPane; // class for JOptionOPane
public class Sales {
//main method begins execution ofJava Application
public static void main( String args[] )
double quantity; // total of items purchased
double tax; // total of tax
double value; // total cost of all items before tax
double total; // total of items including tax
double totValue; // daily value counter
double totTax; // daily tax counter
double totTotal; // daily total amount collected (+tax) counter
double item; //
String input; // user-entered value
String output; // output string
String itemString; // item code entered by user
String quantityString; // quantity entered by user
// initialization phase
quantity = 0; // initialize counter for items purchased
// get first code from user
itemString = JOptionPane.showInputDialog(
"Enter item code:" );
// convert itemString to double
item = Double.parseDouble ( itemString );
// loop until sentinel value read from user
while ( item != 999 ) {
// converting code to amount using if statements
if ( item == 100 )
100 = 2.98;
if ( item == 200 )
200 = 4.50;
if ( item == 300 )
300 = 6.79;
if ( item == 400 )
400 = 5.29;
if ( item == 500 )
500 = 7.20;
else //if invalid code entered, output message
JOptionPane.showMessageDialog( null, "Invalid code entered, please try again!",
"Item Code", JOptionPane.INFORMATION_MESSAGE );
} // end if
} // end while
// get quantity of item user
itemString = JOptionPane.showInputDialog(
"Enter quantity:" );
// convert quantityString to int
quantity = Double.parseDouble ( quantityString );
// add quantity to quantity
quantity = quantity + quantity;
// calculation time! value
value = quantity * item;
// calc tax
tax = value * .07;
// calc total
total = tax + value;
//add totals to counter
totValue = totValue + value;
totTax = totTax + tax;
totTotal = totTotal + total;
// display the results of purchase
JOptionPane.showMessageDialog( null, "Amount: " + value +
"\nTax: " + tax + "\nTotal: " + total, "Sale", JOptionPane.INFORMATION_MESSAGE );
// get next code from user
itemString = JOptionPane.showInputDialog(
"Enter item code:" );
// If sentinel value reached
if ( item == 999 ) {
// display the daily totals
JOptionPane.showMessageDialog( null, "Total amount of items sold today: " + quantity +
"\nValue of ites sold today: " + totValue + "\nTotal tax collected today: " + totTax +
"\nTotal Amount collected today: " + totTotal, "Totals", JOptionPane.INFORMATION_MESSAGE );
System.exit( 0 ); // terminate application
} // end sentinel
} // end message
} // end class Sales

Here you go. I haven't tested this but it does compile. I've put in a 'few helpful hints'.
import java.text.NumberFormat; // class for numeric formating from page 178
import javax.swing.JOptionPane; // class for JOptionOPane
public class TestTextFind {
//main method begins execution ofJava Application
public static void main( String args[] )
     double quantity; // total of items purchased
     double tax; // total of tax
     double value; // total cost of all items before tax
     double total; // total of items including tax
//     double totValue; // daily value counter
//     double totTax; // daily tax counter
//     double totTotal; // daily total amount collected (+tax) counter
// Always initialise your numbers unless you have a good reason not too
     double totValue = 0; // daily value counter
     double totTax = 0; // daily tax counter
     double totTotal = 0; // daily total amount collected (+tax) counter
     double itemCode;
     double item = 0;
     String itemCodeString; // item code entered by user
     String quantityString; // quantity entered by user
     // initialization phase
     quantity = 0; // initialize counter for items purchased
     // get first code from user
     itemCodeString = JOptionPane.showInputDialog("Enter item code:" );
     // convert itemString to double
     itemCode = Double.parseDouble ( itemCodeString );
     // loop until sentinel value read from user
     while ( itemCode != 999 ) {
* 1. variable item mightnot have been initialised
* You had item and itemCode the wrong way round.
* You are supposed to be checking itemCode but setting the value
* for item
          // converting code to amount using if statements
          if ( item == 100 )
          {itemCode = 2.98;}
          else if ( item == 200 )
          {itemCode = 4.50;}
          else if ( item == 300 )
          {itemCode = 6.79;}
          else if ( item == 400 )
          {itemCode = 5.29;}
          else if ( item == 500 )
          {itemCode = 7.20;}
          else {//if invalid code entered, output message
               JOptionPane.showMessageDialog( null, "Invalid code entered, please try again!",
               "Item Code", JOptionPane.INFORMATION_MESSAGE );
          } // end if
     } // end while
     // get quantity of item user
     itemCodeString = JOptionPane.showInputDialog("Enter quantity:" );
* 2.
* You have declared quantityString here but you never give it a value.
* I think this should be itemCodeString shouldnt it???
* Or should you change itemCodeString above to quantityString?
     // convert quantityString to int
//     quantity = Double.parseDouble ( quantityString ); // old code
     quantity = Double.parseDouble ( itemCodeString );
     // add quantity to quantity
     quantity = quantity + quantity;
     // calculation time! value
     value = quantity * itemCode;
     // calc tax
     tax = value * .07;
     // calc total
     total = tax + value;
     //add totals to counter
* 3. 4. and 5.
* With the following you have not assigned the 'total' variables a value
* so in effect you are saying eg. "total = null + 10". Thats why an error is
* raised. If you look at your declaration i have assigned them an initial
* value of 0.
     totValue = totValue + value;
     totTax = totTax + tax;
     totTotal = totTotal + total;
     // display the results of purchase
     JOptionPane.showMessageDialog( null, "Amount: " + value +
     "\nTax: " + tax + "\nTotal: " + total, "Sale", JOptionPane.INFORMATION_MESSAGE );
     // get next code from user
     itemCodeString = JOptionPane.showInputDialog("Enter item code:" );
     // If sentinel value reached
     if ( itemCode == 999 ) {
          // display the daily totals
          JOptionPane.showMessageDialog( null, "Total amount of items sold today: " + quantity +
          "\nValue of ites sold today: " + totValue + "\nTotal tax collected today: " + totTax +
          "\nTotal Amount collected today: " + totTotal, "Totals",           JOptionPane.INFORMATION_MESSAGE );
          System.exit( 0 ); // terminate application
     } // end sentinel
} // end message
} // end class SalesRob.

Need Help with complex query for productio database

Hello again,
i need your help again, for an query how Shows me how long every production step takes per Order.
See sample data and what i expect.
Thank you all for your help.
We use Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
Here the sample data tables:
CREATE      TABLE      TABLE_2
(     "ORDER_NR"      VARCHAR2 (12)
,      "PRIORITY"      VARCHAR2 (2)
,      "WO_STEP"      VARCHAR2 (1)
,      "STEP_DATE"      DATE
CREATE      TABLE      TABLE_1
(     "ORDER_NR"           VARCHAR2     (12) PRIMARY KEY
,      "PRIORITY"           VARCHAR2      (2)
,      "CREATE_DATE"      DATE
,     "ACT_STEP"          VARCHAR2     (2)
,     "STEP_DATE"          DATE
,     "EMPLOYEE"          VARCHAR2     (5)
,     "DESCRIPTION"     VARCHAR2     (20)
INSERT      INTO      TABLE_1      (ORDER_NR,               PRIORITY,      CREATE_DATE,                                                        ACT_STEP,     STEP_DATE,                                                            EMPLOYEE,     DESCRIPTION)
                    VALUES           ('1KKA1T205634',     '12',          TO_DATE('10-FEB-13 10:00:00','DD-MON-RR HH24:MI:SS'),     'U',          TO_DATE('28-FEB-13 12:00:00','DD-MON-RR HH24:MI:SS'),     'W0010',     'CLEAN HOUSE');
INSERT      INTO      TABLE_1      (ORDER_NR,               PRIORITY,     CREATE_DATE,                                                        ACT_STEP,     STEP_DATE,                                                            EMPLOYEE,     DESCRIPTION)
                    VALUES           ('1KKA1Z300612',     '12',          TO_DATE('08-FEB-13 14:00:00','DD-MON-RR HH24:MI:SS'),     'F',          TO_DATE('20-FEB-13 16:00:00','DD-MON-RR HH24:MI:SS'),     'K0052',     'REPAIR CAR');
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          'A',          TO_DATE('12-FEB-13 13:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          '5',          TO_DATE('13-FEB-13 09:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          'K',          TO_DATE('13-FEB-13 10:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          '5',          TO_DATE('13-FEB-13 11:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          'K',          TO_DATE('13-FEB-13 12:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          '5',          TO_DATE('13-FEB-13 16:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          'C',          TO_DATE('14-FEB-13 08:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          'B',          TO_DATE('14-FEB-13 10:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          'E',          TO_DATE('18-FEB-13 13:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          'F',          TO_DATE('20-FEB-13 16:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          'S',          TO_DATE('21-FEB-13 08:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          'R',          TO_DATE('21-FEB-13 09:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1T205634',     '12',          'U',          TO_DATE('28-FEB-13 12:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1Z300612',     '12',          'A',          TO_DATE('12-FEB-13 13:52:42','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1Z300612',     '12',          '5',          TO_DATE('13-FEB-13 09:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1Z300612',     '12',          'K',          TO_DATE('13-FEB-13 10:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1Z300612',     '12',          '5',          TO_DATE('13-FEB-13 11:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1Z300612',     '12',          'K',          TO_DATE('13-FEB-13 12:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1Z300612',     '12',          '5',          TO_DATE('13-FEB-13 16:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1Z300612',     '12',          'C',          TO_DATE('14-FEB-13 08:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1Z300612',     '12',          'B',          TO_DATE('14-FEB-13 10:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1Z300612',     '12',          'E',          TO_DATE('18-FEB-13 13:00:00','DD-MON-RR HH24:MI:SS'));
INSERT     INTO      TABLE_2      (ORDER_NR,               PRIORITY,     WO_STEP,     STEP_DATE)
                    VALUES           ('1KKA1Z300612',     '12',          'F',          TO_DATE('20-FEB-13 16:00:00','DD-MON-RR HH24:MI:SS'));
COMMIT;And here is what i expect from my query:
SYSDATE     28.Feb.13 14:00
ORDER_NR     PRIORITYCREATE_DATE     STATUS     STATUS_DATE     DESCRIPTION     AGE_1     AGE_2     WAITNG     STEP_A     STEP_B     STEP_C     STEP_5     STEP_K     STEP_E     STEP_F     STEP_S     STEP_R
1KKA1T205634     12     10.Feb.13 10:00     U     28.Feb.13 12:00     CLEAN HOUSE     18,083     8,833     2,125     0,833     4,125     0,083     0,750     0,208     2,125     0,666     0,042     7,125
1KKA1Z300612     12     08.Feb.13 14:00     F     20.Feb.13 16:00     REPAIR CAR     20,000     16,042     2,125     0,833     4,125     0,083     0,750     0,208     2,125     0,666          And now the explanation to the query result:
The AGE_1 is the difference in days between the 'CREATE_DATE' and IF EXSIST the STEP 'U' then STEP_DATE or if the STEP 'U' is not found in TABLE_2 then it should show the difference in days between the 'CREATE_DATE' and the 'SYSDATE'
The AGE_2 is the difference in days between the STEP 'A' STEP_DATE and IF EXSIST the STEP 'R' then STEP_DATE or if the STEP 'R' is not found in TABLE_2 then it should show the difference in days between the 'CREATE_DATE' and the 'SYSDATE'
The WAITING is the difference in days between CREATE_DATE and STEP 'A' STEP_DATE
The following columns show the days how long the ORDER_NR stays in these STEP, if an ORDER_NR comes into the same STEP more then one time it should be calculated together.
If the ORDER_NR skips a step it should show a zero in the specific field.
I hope my explanation is good enough, my english skills are far away from good.
Thanks all for your help.
Greets Reinhard W.

Hi,
i changed this query:
with t2 as (
            select t.*,
                    lead(step_date) over(partition by order_nr order by step_date) next_step_date
              from table_2 t
select t1.*,
        nvl(
            max(
                case t2.wo_step
                  when 'U' then t2.step_date
                end
           sysdate
          ) - t1.create_date age_1,
        nvl(
            max(
                case t2.wo_step
                  when 'R' then t2.step_date
                end
           sysdate
          ) - t1.create_date age_2,
        sum(
            case t2.wo_step
              when 'B' then t2.next_step_date - t2.step_date
            end
           ) step_b
from table_1 t1,
        t2
where t2.order_nr = t1.order_nr
group by t1.order_nr,
           t1.priority,
           t1.create_date,
           t1.act_step,
           t1.step_date,
           t1.employee,
           t1.descriptionTo this:
with t2 as (
            select t.*,
                    lead(step_date) over(partition by order_nr order by step_date) next_step_date
              from table_2 t
select t1.order_nr,
        nvl(
            max(
                case t2.wo_step
                  when 'U' then t2.step_date
                end
           sysdate
          ) - t1.create_date age_1,
        nvl(
            max(
                case t2.wo_step
                  when 'R' then t2.step_date
                end
           sysdate
          ) - t1.create_date age_2,
        sum(
            case t2.wo_step
              when 'B' then t2.next_step_date - t2.step_date
            end
           ) step_b
from table_1 t1,
        t2
where t2.order_nr = t1.order_nr
group by t1.order_nrthen i get the ORA-00979 Error.
Whats wrong?
I have another question.
How can i handle i i want to group to or more 'STEP's in one Column.
in Case of this i want that the column 'STEP_B' contains all days for STEP 'B' and STEP '5'.
I tried already with a + Operation like this:
with t2 as (
            select t.*,
                    lead(step_date) over(partition by order_nr order by step_date) next_step_date
              from table_2 t
select t1.*,
        nvl(
            max(
                case t2.wo_step
                  when 'U' then t2.step_date
                end
           sysdate
          ) - t1.create_date age_1,
        nvl(
            max(
                case t2.wo_step
                  when 'R' then t2.step_date
                end
           sysdate
          ) - t1.create_date age_2,
        Round( sum(
            case t2.wo_step
              when 'B' then t2.next_step_date - t2.step_date
            end
           ) +
        sum(
            case t2.wo_step
              when '5' then t2.next_step_date - t2.step_date
            end
           ), 3 ) step_b
from table_1 t1,
        t2
where t2.order_nr = t1.order_nr
group by t1.order_nr,
           t1.priority,
           t1.create_date,
           t1.act_step,
           t1.step_date,
           t1.employee,
           t1.descriptionBut this does reply evertime a NULL.
Thank You.

Need help with random numbers

hi i need to generate 2 random numbers from array list . and then take out that two numbers from list.
     String[] plcard = { "AC", "KC", "QC", "JC",
          "10C", "9C", "8C", "7C","6C","5C","4C","3C","2C", "AD", "KD", "QD", "JD",
          "10D", "9D", "8D", "7D","6D","5D","4D","3D","2D", "AS", "KS", "QS", "JS",
          "10S", "9S", "8S", "7S","6S","5S","4S","3S","2S", "AH", "KH", "QH", "JH",
          "10H", "9H", "8H", "7H","6H","5H","4H","3H","2H",};
this is the list if someone can help me i would appreciate
thanks in advance

haha, never noticed the .shuffle(List) method!
maybe java is getting too convenient (just kidding)?
i never wrote a card game.
how would the more programmingly gifted of us do this?
this is my shot at it for what its worth...
public class Card{
public Card(int rank, int suit){
this.rank = rank;
this.suit = suit;
int rank (or String i suppose)
int suit;
static final club = 1;
static final spade = 2;
static final heart = 3;
static final diamond = 4;
public class Shuffler{
public Shuffler(){
int NumOfDecks = 1;
Vector ShuffledDeck;
// num of decks
for(int i = 0; i < NumOfDecks){
// 4 suits
for(int j = 0; j < 4; j++){
// 13 ranks
for(int k = 0; k < 13; k++){
ShuffledDeck.add(new Card(k, j));
} // suits
} // num of decks
Collections.shuffle(ShuffledDeck);
// Done?
}

Need help with skype numbers....urgent please!

Question regarding skype numbers..... So i plan to buy hongkong skype number,......say for example + 852 8192 6362, and if im right , i can receive the calls on my PC /desktop, etc. But what about if im traveling , for few days to mainland china or london , will my family still be able to call the same number with appropriate county code, n will i continue to recive calls on my PC. { *Example calling me in china +8621 8192 6362 } In short, can my family call my anywhere in the world by using proper country codes, or is skype number limited to hongkong only, I travel alot, and cant change numbers frequently. Thanks....

Hi, ajamal786, and welcome to the Community,
Yes, your one Skype Number travels with your account regardless of wherever you are. Such is the beauty of a Skype Number: people can call you on the number you set up, which in theory would be a local call to them depending upon the availability of numbers from which you can choose (my Skype Number exchange is a few townships away, but still a local call), and reach you on Skype.
So, no need to change a Skype Number.
Elaine
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Need help with complex NAT setup with DHCP forwarding

This is going to get a little crazy, so try to stick with me... Attached is a very crude network map to clarify as best I can...
I need my Cisco 831 to perform 1-to-1 NAT, but the Inside Global ('Black' LAN hosts as seen by the WAN) addresses must be assigned via DHCP from a DHCP server on the WAN. (This is the complex NAT part) The internal IP addresses would by assigned by the 831's DHCP.
In addition, the WAN's DHCP server must see the MAC address of the request as the one that belongs to the host on my LAN - Effectively, the WAN DHCP server should not be able to tell there is NAT going on. (This is the DHCP forward problem)
Any ideas on how to combine these tasks?
TIA,
-Chris Bowles, CCNA

Hi.
I don't think this is supported in alter table command. But you can code that inside an if statement which queries systables & syscolumns. Your code should be something like that:
if (select count(*) from sysobjects, syscolumns where sysobjects.id = syscolumns.id and sysobjects.name = 'some_table' and syscolumns.name = 'some_column') < 1
begin
alter table some_table add some_column numeric(12) not null
end
This is an example..
Andreas.

I need help with the numbering pages in a book file

I have a 53 chapter book that which each chapter is its own document. It used to work great. The page numbers of each document used to continue from the last page number of the previous document. That was until today when I opened it and all the page numbers now start at one. I don't know what to do. I have checked all of the options I knew to check. Each document still has the 'automatic page numbering' option selected. I truly don't want to have to go through and manully renumber every document. It will take time I do not have. If I can get somebody's help, it would be wonderful.

Nor do I. It sounds like everything is set correctly. You might want to try creating a new Book file and add the individaul documents into it and see if that fixes things. Also, have you tried updating the numberingfrom the menu since this started?

Need help with formating numbers

public void returnDollars()
          double dollar;
          dollar=amountr-amount;
NumberFormat fmt = NumberFormat.getNumberInstance();
          System.out.println(fmt.fomat(dollar));
there is my code.....now lets say
amountr = 10
amount 8.5
now when i print my dollar amount i want it to show up as 1 not 1.5 or 2. So in other words format it with no decimals and not round up at the same time.
Help would be appriciated...thanks

well...after 8 hours of trying to get it working i did it.....here it is ...........I'm sure there are many ways to make it smaller.
import java.text.*;
import java.io.*;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
public class Cashier
double amount;
double amountr;
double dollar;
double amountleft;
double quaters;
double test;
double dimes;
double pennies;
public void getAmount()throws IOException
     BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
          System.out.println("Please enter amount due:");
          String input = console.readLine();
     amount = Double.parseDouble(input);
System.out.println("Amount due = " + amount);
     public void recieve()throws IOException
BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
          System.out.println("Please enter amount recieved :");
          String input = console.readLine();
     amountr = Double.parseDouble(input);
System.out.println("Amount recieved = " + amountr);
     public void returnDollars()throws IOException
          double check = amountr-amount;
          dollar=amountr-amount;
DecimalFormat fmt = new DecimalFormat("##");
String s = fmt.format((double)(long)dollar);
double d = Double.valueOf(s).doubleValue();
amountleft=check-d;
     System.out.println("Dollars to return " + s);
public void returnQuaters()
     quaters= amountleft/.25;
     double check = quaters;
DecimalFormat fmt = new DecimalFormat("##");
String s = fmt.format((double)(long)quaters);
double d = Double.valueOf(s).doubleValue();
fmt.setMaximumFractionDigits(2);
String dol = fmt.format(amountleft);
          //System.out.println(dol);
          double e =Double.valueOf(dol).doubleValue();
e= e-2*(.25);
amountleft=e;
     System.out.println("Quaters to return: " + s);
     public void returnDimes()
     dimes= amountleft/.1;
     double check = dimes;
DecimalFormat fmt = new DecimalFormat("##");
String s = fmt.format((double)(long)dimes);
System.out.println("Dimes to return: " + s);
double d = Double.valueOf(s).doubleValue();
fmt.setMaximumFractionDigits(2);
String dol = fmt.format(amountleft);
          double e =Double.valueOf(dol).doubleValue();
e= e-1*(.1);
fmt.setMaximumFractionDigits(2);
String dola = fmt.format(e);
          double t =Double.valueOf(dola).doubleValue();
amountleft=t;
          public void returnNickles()
     double nickles = amountleft/.05;
          double check = nickles;
DecimalFormat fmt = new DecimalFormat("##");
String s = fmt.format((double)(long)nickles);
System.out.println("Niclkles to return: " + s);
double d = Double.valueOf(s).doubleValue();
fmt.setMaximumFractionDigits(2);
String dol = fmt.format(amountleft);
          double e =Double.valueOf(dol).doubleValue();
e= e-1*(.05);
fmt.setMaximumFractionDigits(2);
String dola = fmt.format(e);
          double t =Double.valueOf(dola).doubleValue();
amountleft=t;
     public void returnPennies()
          double pennies = amountleft/.01;
DecimalFormat fmt = new DecimalFormat("##");
String s = fmt.format((double)(long)pennies);
System.out.println("Pennies to return: " + s);
     public static void main(String[] a) throws IOException
          Cashier cash = new Cashier();
          cash.getAmount();
          cash.recieve();
          cash.returnDollars();
          cash.returnQuaters();
          cash.returnDimes();
          cash.returnNickles();
          cash.returnPennies();

Need Help with Complex Background Images

Hey, Macromedia, I mean, Adobe Dreamweaver users. I have a
dilemma, before you read further, look at this website:
https://statons.rtotogo.com/rtotogostore/rto_store/sign_in.asp.
Notice the background images. The light tan stripe at the top, the
orange/yellow stripe beneath it, and the darker tan color that
encompasses the rest of the background. When you go to a longer
page on the site, the top two colors do not repeat, and as the page
shrinks on smaller pages, so does the darker tan background. How
can I do this? I've seen it done before, and I read the source
code, but I am confused as to how I can accomplish this..... Please
advise! I am in desperate need of your expertise!
Thanks in advance for the help.
Chuck

It's controlled using CSS check out the css script and the
backgounds are
set to repeat along the x axis only
cheers
Ian
[email protected]
http://www.edwards-micros.co.uk
"ChuckRWD" <[email protected]> wrote in
message
news:e93ha7$lmi$[email protected]..
> Hey, Macromedia, I mean, Adobe Dreamweaver users. I have
a dilemma,
> before you
> read further, look at this website:
>
https://statons.rtotogo.com/rtotogostore/rto_store/sign_in.asp.
Notice
> the
> background images. The light tan stripe at the top, the
orange/yellow
> stripe
> beneath it, and the darker tan color that encompasses
the rest of the
> background. When you go to a longer page on the site,
the top two colors
> do
> not repeat, and as the page shrinks on smaller pages, so
does the darker
> tan
> background. How can I do this? I've seen it done before,
and I read the
> source code, but I am confused as to how I can
accomplish this.....
> Please
> advise! I am in desperate need of your expertise!
>
> Thanks in advance for the help.
> Chuck
>

Need help with binary numbers

hey i'm doing some things, but i need a entry of a binary coded number, i know that an hex number is written like 0xFF but how do i put a binary number in an instruction such as:
byte b
b="binary number"

I see what you want to do, but you can only do this with octal and hex. With binary, you would have to do it something like this:
byte b = Byte.parseByte("01101001", 2); // base-2

Need help with rounding numbers in Java

I finally have this program to where it needs to be except for one thing. The variable "freetime" isn't showing any kind of output in the applet. The variable sum and freetime are both called at the start of the program, and have equations to figure out the output for them, but only sum shows an output. I tried using brackets as opposed to multiple parentheses. What can I do to fix this so that there is an output? I was thinking of using something to round up the result, but I can't figure it out. Can anyone help?
import java.awt.*;
import javax.swing.*;
public class FinalLab extends JApplet{
String firstNum, secondNum, thirdNum, fourthNum, fifthNum;
int personal, family, school, work, sleep, sum, freetime;
public void init()
String firstNum, secondNum, thirdNum, fourthNum, fifthNum;
firstNum = JOptionPane.showInputDialog( "Enter total personal hours." );
secondNum = JOptionPane.showInputDialog( "Enter total family hours." );
thirdNum = JOptionPane.showInputDialog( "Enter total school hours." );
fourthNum = JOptionPane.showInputDialog( "Enter total work hours." );
fifthNum = JOptionPane.showInputDialog( "Enter total sleep hours." );
personal = Integer.parseInt( firstNum );
family = Integer.parseInt( secondNum );
school = Integer.parseInt( thirdNum );
work = Integer.parseInt( fourthNum );
sleep = Integer.parseInt( fifthNum );
sum = (personal + family + school + work + sleep);
freetime = ((168-sum)/168)*100;
public void paint(Graphics g) {
super.paint( g );
g.drawRect( 15, 10, 270, 20 );
g.drawRect( 15, 35, 270, 20 );
g.drawRect( 15, 60, 270, 20 );
g.drawRect( 15, 85, 270, 20 );
g.drawRect( 15, 110, 270, 20 );
g.drawRect( 15, 135, 270, 20 );
g.drawRect( 15, 160, 270, 20 );
g.drawString( "Personal hours: " + personal, 25, 25);
g.drawString( "Family hours: " + family, 25, 50);
g.drawString( "School hours: " + school, 25, 75);
g.drawString( "Work hours: " + work, 25, 100);
g.drawString( "Sleep hours: " + sleep, 25, 125);
g.drawString( "Total hours: " + sum, 25, 150);
g.drawString( "Free time: " + freetime, 25, 175);
}

I am guessing that you really meant that you are seeing "Free time: 0" instead of what you said, which was that it wasn't showing any kind of output. (Your whole terminology is weird, you don't "call a variable" just for example.) If that's the case, it's because you are using integer division. You'll find that 27/168, for example, gives zero. I don't know why you are multiplying by 100 in your calculation and doing the division, perhaps you meant to return the free time as a percentage (in which case your output should say that), but since you are doing that you could do it this way:((168-sum)*100/168)Then you are doing 2700/168, which produces a reasonable number.

Need help with a Numbers (ISBLANK) formula

Having trouble with a cell formula that tests 2 cells for blank condition.
I want to sum 2 cells only if they are BOTH blank. (Trying to eliminate the
"0" in the sum cell if both test cells are blank.)
I've tried using ISBLANK, AND, IF functions but no success.
Would appreciate your help on this. Thank you.

Hi there.
Perhaps due to my bad english, I could not understand your question, but I want to help, anyway.
The question is: why would you want to sum two blank cells? Or what you want is to sum two cells IF two different cells are blank?
Best regards,
Otávio

Need help with my numbers app synching with icloud

My numbers app just stopped synching with icloud and my ipad2. And vice versa. I deleted then reinstalled the app, synched the phone, etc. and it still won't transfer to iclous. Any suggestions?

Find your serial number quickly
Sign in, activation, or connection errors | CS5.5 and later, Acrobat DC
Mylenium

I NEED HELP!!!. with complex numbers

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