Urgent How to generate a random code such as registration code?
I would like to ask that how to generate a random code?
For example, when you register a E-mail account, you need to enter the code for activation. I would like to create a java Bean to do this job. Would you help me?
In fact, I would like to set a 10 digi codes randomly (such as FH654CS081, MKO624VG9f) for user input when they register the forum account. This random code will be sent to the user's email. User have to input this code to a JSP web site. Also, the code which is inputed by user will be matched with the database. If user input success, the forum account will be activated.
By generating this 10 digi codes, I want to handle this generation by using java bean.
1) Any thing else i need to import ? (such as <% page import="java.......?")
2) Any functions can handle this task?
3) Any example can be my reference?
Thank you very much
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How to generate a random session variable in php
i want to generate a random session variable and insert the variable in a mysql record to use later to validate an account set up.
person fills out form to create account and submits; inserts form information in mysql record.
i want the random variable to be inserted from a hidden field and the page sends an email with a link to click on to compare the variable to validate the user.
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thanks for your help,
Jim BalthropTo insert the key I would personally do something like...
$key = md5($username . $password . $salt);
Insert that into your MySQL database, then send them a email with it, my next code shows how to activate it.
This is to activate the account.
<?php
$key;
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if(isset($_GET['key']){
$key = $_GET['key'];
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if(mysql_num_rows($result)){
$sql2 = 'UPDATE users SET active = 1 WHERE key = \'' . $key '\' LIMIT 1';
$result2 = mysql_query($sql2) or die(mysql_error());
if($result2){
//successfully activated account
else{
//Something Went Wrong!
else{
$errors[] = 'Invaild Key, Please try again!';
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?> -
How to generate pseudo random noise(PRN) binary sequence using shift registers?
what is the block diagram to generate pseudo random noise (PRN) binary sequence of 1's and 0's using shift registers
please help
i need 2 submit this project in this weekThis is a fairly simple homework problem. My hints (on the LabVIEW side):
1- look at while loops
2- look at shift registers on while loops with multiple input elements
3-look at the logic components, AND, OR XOR
Look at this wiki article: http://en.wikipedia.org/wiki/Linear_feedback_shift_register
Do the work, you won't learn if someone shows you how it is done! The palette that the previous post points to are of PRN and other "noise generators" but I suspect that is not what you are after.
Know that creating a PRN with a reasonable number of shift register taps produces very pseudo results, as the "random" pattern begins to repeat pretty quickly, thereby making it not a truly random number.
When you have an attempt that is sort of working and want additional suggestions, post the code here. We won't do your work, we will help you try to do it, and learn it, yourself.
Putnam
Certified LabVIEW Developer
Senior Test Engineer
Currently using LV 6.1-LabVIEW 2012, RT8.5
LabVIEW Champion -
How to generate the java code of a table's data model by parsing it's FXML?
I have know how to create FXML file that describes a table. Meanwhile, according to [Oracle Tutorial|http://docs.oracle.com/javafx/2/fxml_get_started/fxml_tutorial_intermediate.htm#CACFEHBI], it is a best practice to implement a class that defines the data model and provides methods and fields to further work with the table.
However, It's rather cumbersome and time consuming to typing the code. So, is there any tools that can generate the java code of a table's data model by parsing it's FXML describe file?
Regards, Qinn
Edited by: 854675 on Oct 7, 2012 11:02 PMI have know how to create FXML file that describes a table. Meanwhile, according to [Oracle Tutorial|http://docs.oracle.com/javafx/2/fxml_get_started/fxml_tutorial_intermediate.htm#CACFEHBI], it is a best practice to implement a class that defines the data model and provides methods and fields to further work with the table.
However, It's rather cumbersome and time consuming to typing the code. So, is there any tools that can generate the java code of a table's data model by parsing it's FXML describe file?
Regards, Qinn
Edited by: 854675 on Oct 7, 2012 11:02 PM -
How to generate n random dates between 2 time periods
Hi,
I'm trying to write a method that generates n random dates between 2
time periods. For example, lets say I want to generate n random dates
between Jan 1 2003 and Jan 15 2003. I'm not sure how to go about
doing the random date generation. Can someone provide some direction
on how to do this?
The method signature should look like this.
public String[] generateRandomDates(String date1,String date2,int n){
// date1 and date2 come in the format of mmddyyyyhh24miss.
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Thanks.
Peterfirst take a look at the API concerning a source of randomness (Random might be a good guess), then take a look at stuff concerning dates (Date might be cool, maybe you will find some links from there).
Who wrote this stupid assignment? -
Dear All,
Could you plz tell me how to generate continious sequential No.. Atually i have to print TC No. on the form, but it's not available in the SAP. TC No. should be in sequence i.e for first time say it 's 10, at the second time it should be 11, third time it should be 12 and so on.
Plz tell me ASAP. It's very urgent.
Looking forward to your earliest response.
thanks in Advance.
Gulrez AlamYou can create a number range(SNRO) to get the continuous numbers.You can use the FM 'NUMBER_GET_NEXT' to get the next number from number range.
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How to generate a random number with at least 6 digits?
Hi all,
All is in the question. :-)
I would like to generate a random number but the function "random
number" in Labview isn't accurate enough.
Do you know an algorithm to generate a random number of 6 or more
digit?
Thanks,
PFHi PF,
It's simple. Use 2 random number functions in the same process. Now you
should have 2 distinct random numbers that have the same accuracy. Let's say
LV gives accuracy up to the thousandth (0.XXX), now if you divide one number
by 1000 and then add to the other number you should then have something like
0.XXXXXX. Actually, LV random number function can give up to about 17 digits
(decimal). If you are looking for more digits (>17 digits), the idea above
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three random numbers then convert all these decimal numbers to fractional
strings chop off the 0 and dot then concatinate them together. After all
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pt that many digits?
Good luck
Louis.
P-F wrote in message
news:[email protected]..
> Hi all,
>
> All is in the question. :-)
>
> I would like to generate a random number but the function "random
> number" in Labview isn't accurate enough.
>
> Do you know an algorithm to generate a random number of 6 or more
> digit?
>
> Thanks,
>
> PF -
How to generate n random dates
Can anyone help me in generating Random dates, i want to generate 100 random dates in yyyy-mm-dd format.
I've tried this, but will appreciate any neat solutions...
public static void main(String arg[]) {
int no = 0;
while (no < 100) {
// Year
int yylower = 1970; // your lower integer value
int yyupper = 2000; // the larger one of your two integers
double rand = Math.random();
int yyresult = yylower + (int) ( (yyupper - yylower) * rand);
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int mmlower = 1; // your lower integer value
int mmupper = 12; // the larger one of your two integers
rand = Math.random();
int mmresult = mmlower + (int) ( (mmupper - mmlower) * rand);
// Month
int ddlower = 1; // your lower integer value
int ddupper = 29; // the larger one of your two integers
rand = Math.random();
int ddresult = ddlower + (int) ( (ddupper - ddlower) * rand);
System.out.println(yyresult + "-" + mmresult + "-" + ddresult);
no++;
} -
How to generate a random number within a specified tolerance and control that tolerance.
I am trying to simulate data without using a DAQ device by using a random number generator and I want to be able to control the "range" of the random number generated though. On the front pannel, the user would be able to input a nominal number, and the random number generator would generate numbers within plus or minus .003 of that nominal number. The data would then be plotted on a graph. Anyone know how to do this? Or if it's even possible?
Just for information sake, the random number is supposed to look like thickness measurements, that's why I want to simulate plus and minus .003 because the data could be thinner or thicker than the nominal.
Thanks in advance!!
Solved!
Go to Solution.You can create a random number with a gaussian probability profile using two equal distributed (0...1) random numbers and applying the Box Muller transform.
I wrote one many years ago, her it is. (LabVIEW 8.0).
Message Edited by altenbach on 04-12-2010 09:13 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
BoxMuller.vi 10 KB -
How to generate unique random numbers
Hi All,
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Jackhtran_888 wrote:
Hi All,
I am wondering whether there is already a random library or built-in function available in Java to produce some random numbers between certain ranges that are not repetitive. Let's look at a common examples as follows:
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Using the above example to illustrate my intention:
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2nd random number generated - possibility of 1, 2, 3, 4, 6 only. Say 2 is picked.
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4th random number generated - possibility of 3, 4, 6 left. Say 6 is picked.
5th random number generated - possibility of 3, 4 remains. Say 4 is picked.
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(You might want to look at Collections) -
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Hello all,
I have created a transaction Iview and i am calling transaction SE16 to which i am passing application parameter as the table name which i want to see.Now i am getting the SE16 screen with the table name successfully passed on to the input field. But i want the Iview to process this screen also so that i dont have to press enter to see the next screen. i want this iview to process the SE16 screen directly and show me the next screen. I dont know how can i pass the return code parameter which will directly execute the table name entered in SE16 screen.suppose my table name is "ABC" and i have set the application parameter as DATABROWSE-TABLENAME=ABC&~okcode=ANZE where ANZE is the sy-ucomm value.Plz reply at the earliest.
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Alpa Desai.Madden wrote:
I do think OOP can only complement procedural programming,Wrong. They don't have to have anything to do with each other.
but I just wish for my app to exit the same way whether I return or not an exit code.
I mean we are talking about the implementation, or the system, here.
Simply let it end and the "return code" will be 0.
But ... is there a way for a Java application to execute another Java application ? The analog for CreateProcess, but in the Java world ?Start a thread and call the main method of the class that kicks it off with the necessary arguements is one way.
When an Java app executes another Java app will a new VM be created ?Runtime.getRuntime().exec() and call java ...... Which will, obviously, start a new VM.
Is ther an internal way, for this that will work inside the same VM ?See the thread situation above.
How will the parent get the exit code from the child ?If called with Runtime simply call System.exit and then (from the original program) evaluate the return code (see the Runtime and Process classes).
If called in a thread, without using Runtime.exec any where, then you use a return at the end of the main method, but, if you are looking for a "return code" from an entire application, you're probably looking at Runtime.exec anyway. Otherwise, you are better of writing it so that it can be used in a real OOP manner (i.e. you don't have to call the main method of another application at all, you simply start instantiating and using the classes involved), in which case, a "return code" from the "application" is meaningless.
>
Timothy Madden,
RomaniaEdited by: masijade. on Nov 19, 2007 10:18 AM -
I need to know how to generate a Random Multisine wave
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