Need help with a basic java thing..

Sorry, just started java a few weeks ago and i'm having trouble figuring out how to do something.
I wanted to know how to make this work. It cant be more than 6 characters in length and of those six characters, the first two have to be letters only, followed by a dash (-) and then three numbers. EG: ab-234 or gf-643...
Im using it as a serial number generator type thing, thats only one part of the entire program, but I cant figure it out.
Just need the most basic way to do that if anyone could help! been looking for hours in a couple java books i have and dont know where to look or what to look for!!
Any help figuring out the code for that would be great! Here's what I have so far and how i need the rest to be implemented! Thanks! PS: using TextIO
<code>
String itemNum1
     itemNum1 = new String ( " Enter Item Number(AB-123): " );
     TextIO.put("\n" + itemNum1);
     itemnum = TextIO.getlnString();
</code>

Oh hey sorry, i figured the bit of text i put in there
would be enough. I basically need a user to enter the
information, but i just need to know (or get a hint)
of how to prevent them from entering an invalid
number/serial code type thing in regards to the
parameters that I need met. (such as no more than 6
chars, but alternating numbers/letters). I presume I
use the char and not the getlnString command but
nonetheless im still stuck as to how I'd manage that.
Do i need to code each character seperately? (such as
letters by themselves, then another prompt to enter
the numbers??) or is there a way to get it all in one
go?
Thanks for any advice! oh and Sorry for the bad
wording in my question :P.
You could read the String from console using something like
public static String readWord()
   { int ch;
      String r = "";
      boolean done = false;
      while (!done)
      { try
         { ch = System.in.read();
            if (ch < 0
               || java.lang.Character.isSpace((char)ch))
               done = true;
            else
               r = r + (char) ch;
         catch(java.io.IOException e)
         { done = true;
      return r;
   }you would have to modify it according to your needs and after that you could use the String API to confirm if the user has entered it right or not. If not you could ask him to do that again

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Im DROWNING! need help with a simple java assignment! plz someone help me!

i need help with my java assignment, with validating a sin number. easy for must who know java. im drowning... please help!

You will need to store each digit of the social insurance number in a field of its own. To validate the entry you will:
1. Multiply the 2nd, 4th, 6th and 8th digit by 2.
2. If the product of any of the four multiplications result in a value greater than 9, add the two resulting digits together to yield a single-digit response. For example 6 * 2 = 12, so you would add the 1 and the 2 to get a result of 3.
3. Add these four calculated values together, along with the 1st, 3rd, 5th, and 7th digits of the original number.
4. Subtract this sum from the next highest multiple of 10.
5. The difference should be equal to the 9th digit, which is considered the check digit.
Example of validating S.I.N. 765932546
1st digit 7
2nd digit (6*2 =12 1+2=) 3
3rd digit 5
4th digit (9*2 = 18 1+8 =) 9
5th digit 3
6th digit (2*2 = 4) 4
7th digit 5
8th digit (4*2 = 8) 8
Total 44 next multiple of 10 is 50
50-44 = 6 which is the 9th digit
Therefore the S.I.N. 765932546 is Valid
********* SIN Validation *********
Welcome - Please enter the first number: 120406780
Second digit value multiplied by 2 4
Fourth digit value multiplied by 2 8
Sixth digit value multiplied by 2 12
Eighth digit value multiplied by 2 16
Value derived from 6th digit 3
Value derived from 8th digit 7
The total is 30
Calculated digit is 10
Check digit must be zero because calculated value is 10
The SIN 120406780 is Valid
this is my assignemtn this is what i have! i dont know where to start! please help me!
/*     File:     sinnumber.java
     Author:     Ashley
     Date:     October 2006
     Purpose: Lab1
import java.util.Scanner;
public class Lab1
          public static void main(String[] args)
               Scanner input = new Scanner(System.in);
               int sin = 0;
               int number0, number1, number2, number3, number4, number5, number6, number7, number8;
               int count = 0;
               int second, fourth, sixth, eighth;
               System.out.print("\t\n**********************************");
               System.out.print("\t\n**********SIN Validation**********");
               System.out.print("\t\n**********************************");
               System.out.println("\t\nPlease enter the First sin number: ");
               sin = input.nextInt();
               count = int.length(sin);
               if (count > 8 || count < 8)
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Help with my basic java

Hello i am in a high school programming class and i need help. I have to make an application that draws a basic face, and then i put in different scrollbars, drop menus and checkboxes to control how the face works. I have gotten most of what i need to do but i am stuck on, I need to have a so if i press it they will get closer together of farther apart, which is where im stuck. i can only make them move in the same direction. any ideas???
heres the code.
import java.awt.*;
import java.awt.event.*;
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          add(mybox5);
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          mybox2.addItemListener(this);
          mybox3.addItemListener(this);
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          add(mybox2);
          add(mybox3);
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          mymenubar2.addItemListener(this);
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          else if (mybox3.getState()==true) {clr=Color.green;}
          repaint();
     public void paint(Graphics g) {
          g.setColor(Color.black);
          if (menuitem1.equals("Rectangle")){
               g.drawRect(100,100,70,90);}
          else if (menuitem1.equals("Oval")){
               g.drawOval(100,100,75,90);}
          else if (menuitem1.equals("Circle")){
               g.drawOval(100,100,80,80);}
          else if (menuitem1.equals("Square")){
               g.drawRect(100,100,80,80);}
          if (menuitem2.equals("Circle")){
               g.drawOval(80,100,10,10);}
          else if (menuitem2.equals("Square")){
               g.drawRect(80,100,10,10);}
                    g.setColor(clr);
          if (mybox4.getState()==true) {
               g.fillRect(inteyes,120,10,10);
               g.fillRect(ineyes,120,10,10);}
          else if (mybox5.getState()==true) {
               g.drawOval(inteyes,120,10,10);
               g.drawOval(ineyes,120,10,10);}
          ineyes=inteyes+42;
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          g.drawArc(111,160,50,20,0,180);
     } //thank you if you can solve it

Next time you post code, use the CODE button or [code] and [/code] tags so that it maintains the formatting from your editor.
If two things are moving int the same direction, your adding N to both of their x-coordinates. If you want one to move in one direction and the other in the other direction, then you have to add N to one and -N to the other.

Need help with mac and java

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Help with a SIMPLE java thing

I've only got ONE handful of hair left.
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I've done that before, so i'll share it with you.
import java.text.SimpleDateFormat;
import java.text.DateFormatSymbols;
import java.util.Calendar;
import java.util.Date;
public String createListOfMonth(String pName) {
StringBuffer sbMonth = new StringBuffer();
DateFormatSymbols fm = new DateFormatSymbols();
String[] arrMonth = fm.getMonths();
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sbMonth.append("     <option value=\"\">Month</option>\n");
for (int i=0; i<arrMonth.length; i++) {
if (!arrMonth.trim().equals("")) {
String sValue = "0000" + (i + 1);
sValue = sValue.substring(sValue.length() - 2);
sbMonth.append("     <option value=\"" + sValue + "\">" + arrMonth[i] + "</option>\n");
sbMonth.append("</select>");
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You can manipulate the symbol (either for months, days) using different locale. You can see the API for java.text.DateFormatSymbols in Java2 SE.
Regards,
Hariyanto

Need help with Visual BASIC

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//My code is
Module Module1
Sub Main()
Dim LENGTH As Double = 0
Dim WIDTH As double = 0
Dim AREA_1 As Double
Dim AREA_2 As Double
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area1(LENGTH, WIDTH)
areaCalc1(AREA_1, LENGTH, WIDTH)
area2(LENGTH, WIDTH)
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decision(AREA_1, AREA_2, RECTANGLE)
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Console.Read()
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Console.WriteLine("Please input the following for your first rectangle:")
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End Sub
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End Sub
Sub decision(ByRef AREA_1, AREA_2, ByVal RECTANGLE)
If AREA_1 < AREA_2 Then
RECTANGLE = "rectangle 2"
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RECTANGLE = "rectangle 1"
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End Sub
Sub displayDec(ByRef RECTANGLE)
Console.WriteLine("The rectangle with the greater Area is " & RECTANGLE)
End Sub
End Module

Hi,
If you are just beginning to program i highly recommend setting the following options in the Visual Studio menu (Tools/Options). Open the Options window and go to the (Projects and Solutions) and click on (VB Defaults). Now set the options as follows.
Option Strict - On
Option Explicit - On
Option Infer - Off
And probably one of the most important things to do is learning to Debug your code. That will save you hours of headaches when you get unexpected results in your applications. You will know how to track it down and find where in the code your results
are being thrown off. There are quite a few Debugging tutorials on the internet. Here are a few decent ones.
Debugging Express
Breakpoints and Debugging Tools
If you say it can`t be done then i`ll try it

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I've been having problems with Java on my computer for about a year now, and I'm hoping that someone here can help me out.
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This might be way off, but it's something that's tripped me up in the past:
If you are using Sun's Java plugin, the first time you go to a site that has a particular Java applet, you may be asked to approve/reject a security request.
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- K

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I know I'm late here but it seems to me your trying to automate a 8"x10 or 10"x8 300DPI print.
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Step 4 Menu Image>Size un check resample set resolution to 300 DPI.
When you play the actions the Script Dialogs will not be displayed and the setting use when you recorded the action will ne used.
The Plugin Script are included in my crafting actions package:
http://www.mouseprints.net/old/dpr/JJMacksCraftingActions.zip
Contains:
Action Actions Palette Tips.txt
Action Creation Guidelines.txt
Action Dealing with Image Size.txt
Action Enhanced via Scripted Photoshop Functions.txt
CraftedActions.atn Sample Action set includes an example Watermarking action
Sample Actions.txt Photoshop CraftedActions set saved as a text file. This file has some additional comments I inserted describing how the actions work.
12 Scripts for actions
My other free Photoshop downloads cam be found here: http://www.mouseprints.net/Photoshop.html

Need help with settng up JAVA environment

Hi:
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depends on ur OS. If you are running Windows 9X/2K/Me...find your autoexec.bat file. Either right-click and edit it or type "edit autoexec.bat" in DOS. In there, add to your current PATH line (or create one if you don't) that has the bin folder in it.
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AFTER I break down and erase the HD and reinstall OSX
You don't have to erase the drive to reinstall the OS. Just reinstall WITHOUT erasing the drive. Only system files will be over-written, and your borked OS will be fixed, while your own files will be left in place. You really should have a backup before a reinstall, but unless one is very unlucky and something goes wrong it isn't strictly necessary.
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Francine
Francine
Schwieder

Need Help with the basics

I'm attempting to take something in post fix notation and compute its calculation
I'm having problems with my main and passing things to and from the stack. The print statement is just there to make sure its taking the #s in correctly
Ex. 1 3 - 4 5 * +
= 18
import java.util.*;
public class ABStack // Array-based implementation of a stack data structure
//instance variables
int [] pile; // This array holds the contents of the stack. The stack grows rightward from element 0.
int count; // # of elements in stack. This value is also the index of the next available array element.
public ABStack(int size) //constructor
if(size > 1)
pile = new int[size];
else
pile = new int[1];
count = 0;
public boolean isEmpty()
return(count==0);
public boolean isFull()
return(count==pile.length);
public int size()
return count;
// Add a new value to the top of the stack.
// Do nothing if the stack is full.
public void push(int n)
//add n to stack top
if(!isFull()) //have room
pile[count]=n;
count++;
// Remove (and return) th value on the top of the stack.
// If the stack is empty, return -99999 as a sentinel value.
public int pop()
if(isEmpty())
return -99999;
else
count--;
return pile[count];
public static void main(String[] args)
Scanner sc = new Scanner(System.in);
System.out.print("Please enter numbers in Postfix notation: ");
String note = sc.nextLine();
char note2[] = note.toCharArray();
int opt1, opt2;
char c;
for (int i=0;i < note2.length;i++)
if (note2>= '0'&& note2[i]<='9')
String nextchar = "" + note2[i];
int nextnum= Integer.parseInt(nextchar);
System.out.print(+nextnum); // Can't figure out how to pass my stuff to and from the stack
Message was edited by:
jaydon34
Message was edited by:
jaydon34

import java.util.*;
public class ABStack // Array-based implementation of a stack data structure
//instance variables
int [] pile; // This array holds the contents of the stack. The stack grows rightward from element 0.
int count; // # of elements in stack. This value is also the index of the next available array element.
public ABStack(int size) //constructor
if(size > 1)
pile = new int[size];
else
pile = new int[1];
count = 0;
public boolean isEmpty()
return(count==0);
public boolean isFull()
return(count==pile.length);
public int size()
return count;
// Add a new value to the top of the stack.
// Do nothing if the stack is full.
public void push(int n)
//add n to stack top
if(!isFull()) //have room
pile[count]=n;
count++;
// Remove (and return) th value on the top of the stack.
// If the stack is empty, return -99999 as a sentinel value.
public int pop()
if(isEmpty())
return -99999;
else
count--;
return pile[count];
public static void main(String[] args)
Scanner sc = new Scanner(System.in);
System.out.print("Please enter numbers in Postfix notation: ");
String note = sc.nextLine();
char note2[] = note.toCharArray();
int opt1, opt2;
char c;
for (int i=0;i < note2.length;i++)
if (note2>= '0'&& note2<='9')
String nextchar = "" + note2;
int nextnum= Integer.parseInt(nextchar);
System.out.print(+nextnum); // Can't figure out how to pass my stuff to and from the stack
}Message was edited by:

Really Need Help with Some Basics!

I've done Adobe's flash tutorials, and made a numbef of
animations, and feel comfortable with that, but am having trouble
finding a good source on how to best implement a full flash site
for the web. Is there an Adobe tutorial I am missing?
Specifically, I've made an animation using the new Flash
screens feature, but am having a few problems with it. For one, the
animation is 443 kb for the full animation. Is this acceptable if I
add a preloader? (website is for a Swiss audience only - so pretty
good bandwidth)
Here's the site: (use forward and back to navigate as one of
the problems I"m having is with the buttons on the top)
http://www.genevanotebook.com/BUFFET/test.html
I've also had some problems with the navigation. Forward and
Back work, but I can't get the buttons to work (is this a limiation
in the "linear" screens feature?)
Or would someone divide this up in some way. I've though of
different possibilities like using frames (which I haven't touched
for years) and having buttons in an simple html frame, which then
opens and plays the flash files in the frame just below it. Or
would Iframes be a way of proceeding? Or is there something else I
am missing. I would be very curious to hear how you experts would
proceed with putting together a site like the one above!
Many thanks for any suggestions, including websites with good
examples of the different ways a site like mine could be
implemented for the web.

Here is the link.
http://www.matthewpavkov.com/buffetscreens_edited.fla
Now, I'm going to try and explain what I did as best I can.
But please understand that I do not know very much about
actionscript, I just know how to feel my way through syntax and
where code should and shouldn't be.
First, I renamed the slides on the left. b-b-q ----> bbq1,
and so forth. This is what I believe was the main problem for the
buttons not working. My guess is you may have used the instance
name somewhere and that could affect it. The second part to the
main reason why your buttons weren't working is that you had
different code on the word buttons than the code on the picture
buttons. The code on the word buttons was the correct code. So, I
copied and pasted that code on each of the word buttons AND each of
the picture buttons, correspondingly. Then I changed each code to
match up with the new names for the slides. Doing this alone fixed
all the buttons so everything worked correctly. I also found that
you had actionscript associated with the bbq slide. If you click on
the slide on the left, you'll see the actionscript, I deleted that
as it was unnecessary. Also, make sure to use the "Auto format"
button in the actionscript plane, it's very useful for keeping
things looks clean and consistent. I did that for all the code.
Aside from this, I found nothing else wrong.
I'd also like to point out that I've never used slides
before. In fact, I only became aware of them after looking at your
file. They look like a useful feature if you're going to have many
simple pages, but I think it'd be much easier to do what you're
doing now...just have each button point to a frame (or set of
frames) in the timeline. These slides seem a little cumbersome for
a small project, not to mention I'm sure you'll have no problems
whatsoever using the frames method instead of slides.
Hope this helped.

I need help with some basics with itunes 9

Okay, maybe it's just me, but I can't get 9 to do some of the things that I just figured out how to do with 8 so if anyone can help you would save my sanity. First, I only have a few things listed to rank my albums on top in the view section-like album, artist album artist for ex. I used to be able to see all of those on the screen. 9 has spread out these columns too wide and I would like to reduce them.
Second, I have several compilation albums like the Now that's what I call music. I had them fixed so that they would list as the total album with all the various artists. Now if I have 9 in the list view, it separates every artist in that type of album by their name. It won't just list them as an album together. If I click on the album from the side album it has the tracks all mixed up. The only way that I can see them being together and in the correct order is if I stay on the album view.
I'm sure that these are stupid things to be concerned with, but I want to be able to view my own library the way I want to view it. Any help would be greatly appreciated.

Okay, maybe it's just me, but I can't get 9 to do some of the things that I just figured out how to do with 8 so if anyone can help you would save my sanity. First, I only have a few things listed to rank my albums on top in the view section-like album, artist album artist for ex. I used to be able to see all of those on the screen. 9 has spread out these columns too wide and I would like to reduce them.
Second, I have several compilation albums like the Now that's what I call music. I had them fixed so that they would list as the total album with all the various artists. Now if I have 9 in the list view, it separates every artist in that type of album by their name. It won't just list them as an album together. If I click on the album from the side album it has the tracks all mixed up. The only way that I can see them being together and in the correct order is if I stay on the album view.
I'm sure that these are stupid things to be concerned with, but I want to be able to view my own library the way I want to view it. Any help would be greatly appreciated.

Need help with a basic java thing..

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