Any servlet 'guru' here?
Is it possible to do the ff in one servlet?
Create a form (ie FORM METHOD=POST) with elements types such as radio and submit. When the form is submitted the servlet should pull out another form also with a few element types including submit. When this second form is submitted post a confirmation message and a link back to the first form.
I have tried different combinations without success. Here are a few
I tried to use doGet to create the first form and also included in this doGet a conditional statement to handle the submit action and create the second form. doPost submits the last page, ie the confirmation message and a link to the 1st form. THis did not work; after hitting the submit button on the 1st form, it went straight to the last page. Obviously all statements after </form> are ignored.
Second thing, I tried to call doGet with the above method in doPost. However everything shows on one page, ie the two forms and the confirmation message.
Thirdly I implemented the 1st form in doGet, and the 2nd in doPost. I also include a conditional statement to handle (post the confirmation message) the submit action of the second form in doPost. When I run the servlet, the 1st form shows up, the 2nd too but not the confirmation message when I hit the submit button on the 2nd form.
Any help will be much appreciated. Thanks
In answer to the title of your post, the servlet "gurus" answer questions in a forum confusingly named "Java Servlet Technology".
Similar Messages
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// From JAVA PROGRAMMING: FROM THE BEGINNING, by K. N. King /
// Copyright (c) 2000 W. W. Norton & Company, Inc. //
import jpb.*;
import java.io.*;
import java.lang.Thread;
public class bjack{
public static int playerCount=0;
public static int dealerCount=0;
public static int computerCount=0;
// public static int cCard1 = 0;
//public static int cCard2 = 0;
public static int newCard = 0;
int ep, pl;
BJStates bjstates;
public bjack (BJStates parent, int episodes, int plays)
bjstates = new BJStates(this, 1000, 100);
//int ep, pl;
public static void main(String[] args) {
int playerWins = 0;
int dealerWins = 0;
int computerWins = 0;
SimpleIO.prompt("Learn or Play?");
String userInput1 = SimpleIO.readLine();
if (userInput1.equalsIgnoreCase("P"))
while (true) {
// Choose two cards for both player and dealer
Card playerCard1 = Card.pickRandom();
Card playerCard2 = Card.pickRandom();
Card dealerCard1 = Card.pickRandom();
Card dealerCard2 = Card.pickRandom();
Card computerCard1 = Card.pickRandom();
Card computerCard2 = Card.pickRandom();
Card nCard = Card.pickRandom();
// Display player's cards
System.out.println("Your cards: " + playerCard1 +
" " + playerCard2);
System.out.println("Computer cards: " + computerCard1 +
" " + computerCard2);
System.out.println("Dealer cards: " + dealerCard1 +
" " + dealerCard2);
// Compute initial counts for player and dealer and computer
int playerCount = getCount(playerCard1) +
getCount(playerCard2);
int dealerCount = getCount(dealerCard1) +
getCount(dealerCard2);
int computerCount = getCount(computerCard1)+
getCount(computerCard2);
//int cCard1 = getCount(computerCard1);
//int cCard2 = getCount(computerCard2);
int newCard = getCount(nCard);
// Check whether player's count is 21. If so, dealer
// must have 21 or lose automatically.
if (playerCount == 21) {
if (dealerCount != 21 && computerCount != 21)
dealerCount = 0;
computerCount = 0;
} else {
// Player's count was not 21. Ask player to draw
// additional cards and determine new value of
// player's hand.
playerCount = getPlayerCards(playerCard1,
playerCard2);
// Player loses if new count exceeds 21
if (playerCount > 21)
playerCount = 0;
else {
// Player's count does not exceed 21. Show dealer's
// cards.
//System.out.println("Dealer's cards: " +
// dealerCard1 + " " + dealerCard2);
// Draw additional cards for dealer and determine
// new value of dealer's hand
dealerCount = getDealerCards(dealerCard1,
dealerCard2);
// Dealer loses if new count exceeds 21
if (dealerCount > 21)
dealerCount = 0;
// Compare player's count with dealer's count to
// determine the winner; display the outcome and
// update the win counts
if (playerCount > dealerCount && playerCount > computerCount) {
System.out.println("You win!");
playerWins++;
} else if (playerCount < dealerCount && computerCount < dealerCount) {
System.out.println("Dealer wins");
dealerWins++;
} else if (playerCount < computerCount && dealerCount < computerCount){
System.out.println("Computer wins");
computerWins++;
else
System.out.println("Tie");
// Display the win counts
System.out.println("Dealer: " + dealerWins +
" Player: " + playerWins + " Computer:" + computerWins);
// See if user wants to play again; exit from loop if
// answer is no
SimpleIO.prompt("Play again (Y/N)? ");
String userInput = SimpleIO.readLine();
if (!userInput.equalsIgnoreCase("Y"))
break;
System.out.println();
else if (userInput1.equalsIgnoreCase("L"))
while(true)
///BJStates.
/*Buffer sharedLocation = new UnsychronizedBuffer();
bjothers Bjothers = new bjothers( sharedLocation );
Bjothers.start();*/
/*public void run()
/*X whatever = new X();
class X implements Runnable {
X() {
Thread t = new Thread(this);
t.start();
public void run() {
//bjothers(); //some code that executes the functionality of the thread
bjothers Bjothers = new bjothers();
// public void run() {
/// BJStates();
/*public void Work() {
while(true)
System.out.println("+|+");
//parent.initbjothersVariables();
//BJStates.curEpisode = 0;
//B//JStates.curPlay = 0;
//running = true;
//thisThread.start();
//Q.setName("Current");
//BPlayers.player[0].setCurrentStrategy(Q);
//BPlayers.player[1].setCurrentStrategy(Q);
bjstates = new BJStates(this, ep, pl);
bjstates.setEpisodes(ep);
bjstates.setPlays(pl);
bjstates.start();
//startLearning();
SimpleIO.prompt("Stop ");
String userInput2 = SimpleIO.readLine();
if (userInput2.equalsIgnoreCase("S"))
break;
// NAME: getDealerCards
// BEHAVIOR: Adds cards to the dealer's hand until the
// value reaches 17 or more
// PARAMETERS: card1 - One of dealer's original two cards
// card2 - The other original card
// RETURNS: Value of the dealer's hand, including
// original cards and new cards
private static int getDealerCards(Card card1, Card card2) {
int dealerCount = getCount(card1) + getCount(card2);
int aceCount = 0;
// Determine number of aces among original pair of cards
if (card1.getRank() == Card.ACE)
aceCount++;
if (card2.getRank() == Card.ACE)
aceCount++;
while (true) {
// If the dealer's count exceeds 21 and the hand
// contains aces still valued at 11, then reduce the
// number of aces by 1 and reduce the count by 10
if (aceCount > 0 && dealerCount > 21) {
aceCount--;
dealerCount -= 10;
// Return if dealer's count is at least 17
if (dealerCount >= 17)
return dealerCount;
// Pick a new card and update the dealer's count
Card newCard = Card.pickRandom();
System.out.println("Dealer drew: " + newCard);
dealerCount += getCount(newCard);
// Check whether the new card is an ace
if (newCard.getRank() == Card.ACE)
aceCount++;
// NAME: getPlayerCards
// BEHAVIOR: Adds cards to the player's hand until the
// value exceeds 21 or the player decides to
// stand
// PARAMETERS: card1 - One of player's original two cards
// card2 - The other original card
// RETURNS: Value of the player's hand, including
// original cards and new cards
private static int getPlayerCards(Card card1, Card card2) {
int playerCount = getCount(card1) + getCount(card2);
int aceCount = 0;
// Determine number of aces among original pair of cards
if (card1.getRank() == Card.ACE)
aceCount++;
if (card2.getRank() == Card.ACE)
aceCount++;
while (true) {
// If the player's count exceeds 21 and the hand
// contains aces still valued at 11, then reduce the
// number of aces by 1 and reduce the count by 10
if (aceCount > 0 && playerCount > 21) {
aceCount--;
playerCount -= 10;
// Return if player's count exceeds 21
if (playerCount > 21)
return playerCount;
// Ask user whether to stand or hit
SimpleIO.prompt("(S)tand or (H)it? ");
String userInput = SimpleIO.readLine();
if (!userInput.equalsIgnoreCase("H"))
return playerCount;
// Pick a new card and update the player's count
Card newCard = Card.pickRandom();
System.out.println("You drew: " + newCard);
playerCount += getCount(newCard);
// Check whether the new card is an ace
if (newCard.getRank() == Card.ACE)
aceCount++;
//Computer Cards
//public void run() {
/* int s;
while (true) {
try {
Thread.currentThread().sleep(10);
} catch (Exception e)
System.out.println("Exception on sleep");
// Sarsa Strategy
s = bjothers.calcState(card);
// select the best action associated with s
curAction = strat[strategy].selectAction(s);
//take choosed action
switch(curAction) {
case BStrategy.HIT : {
addCard(Cards.next());
drawCards();
points = calcPoints();
if (points<=21) {
setCanPlay(true);
else
setCanPlay(false);
break;
case BStrategy.STAND : {
setCanPlay(false);
break;
default : {setCanPlay(false);}
// NAME: getCount
// BEHAVIOR: Returns the Blackjack value of a particular
// card
// PARAMETERS: c - a Card object
// RETURNS: The Blackjack value of the card c. The value
// of a card is the same as its rank, except
// that face cards have a value of 10 and aces
// have a value of 11.
private static int getCount(Card c) {
switch (c.getRank()) {
case Card.TWO: return 2;
case Card.THREE: return 3;
case Card.FOUR: return 4;
case Card.FIVE: return 5;
case Card.SIX: return 6;
case Card.SEVEN: return 7;
case Card.EIGHT: return 8;
case Card.NINE: return 9;
case Card.ACE: return 11;
default: return 10; // TEN, JACK, QUEEN, KING
public void startLearning(int ep, int pl) {
bjstates = new BJStates(this, ep, pl);
bjstates.setEpisodes(ep);
bjstates.setPlays(pl);
bjstates.start();
}any obvious errors here?Yup:
No code tags
No indentation
Too long to read
All cluttered up -
Hi, my wife uploaded new fonts to her macbook and now can not see any writing on her screen, can I fix this?
System fonts deleted accidentally. Does anyone know how I can fix this please?Thanks Mike,
Absolutely right. I restarted in Safe Mode. This enabled me to see the actual text on the screen. Then I backed up. Then reinstalled. All fixed.
Thanks again,
Chris -
hi I need Apple Hardware test 2.5.2 Apple does'nt have it, I orderit it and they no longer carry it so they say. Any one on here have a copy that I could get access to?Thanks
What model PowerMac do you have? The AHT is on the Install/Restore disc that came with your Mac.
Cheers, Tom -
my iphone is stuck on connect to itunes mode!!!!! Plzz smb help me!!! What should i do? I am from albania and i have gone to any apple service here but no help!!!!
Hi enkifromtirane,
If you had an issue with your iPhone and are now seeing an icon screen instructing you to connect to iTunes, you may find the following article helpful:
Apple Support: If you can't update or restore your iOS device
http://support.apple.com/kb/ht1808
Regards,
- Brenden -
I am trying to help a friend who`s imac is giving her trouble. when the user logon is typed the machine begins to load, then in about a minute, kicks back out into the logon screen. ANY insight to her problem will be greatly appreicated?
Start up in Safe Mode.
http://support.apple.com/kb/PH11212?viewlocale=en_US
Repair Disk
Steps 2 through 8
http://support.apple.com/kb/PH5836
http://support.apple.com/kb/ts1417 -
I have an iPhone4 from softbank in Japan, I want to use any carrier sim here in Philippines, what if Softbank in Japan is not offering unlocking iPhone. What can I do?
All you can do is sell your iPhone to someone in Japan and buy another iPhone. Only the carrier can authorize unlocking, and Softbank does not unlock iPhones.
Regards. -
I have an iPhone4 from au KDDI in Japan, I want to use any carrier sim here in Philippines, what if au KDDI in Japan is not offering unlocking iPhone. What can I do?
If you are a gaijin (I'm a gaijin too) never take a iphone in Japan. Your phone will turn to be nothing more than a paper weight once you are out of Japan. I recently moved to UK and my iPhone 4s which bought from AU is now completely useless. AU does not unlock the phone, there is no option in the net to get the same unlocked too. So I decided to advise those gaijins in Japan to never waste your money spending on iPhones in Japan and if possible never get trapped into the services of AU.
-
Why is my daughter asked to enter my AppleID password to open *any* app on her iPhone?
Preamble:
When iOS 8 dropped and my family of 5 had all upgraded, I set up Family Sharing. As it turns out, it's an incomplete solution and is therefore completely useless for isolating the spendy account (home sharing, iTunes share, etc.), but setting all that aside, I figured we might give it a shot.
It's OK - it's annoying that my kids need permission to download free apps, but OK. However, there is this strange bug I can't explain of figure out how to fix.
Problem description:
My daughter is logged into the iTunes store with her own AppleID and all looks well. However, any time she attempts to open any app at all other than the builtin apps, she gets a popup asking for the password for my AppleID! ***? Why is my AppleID even a thing on her phone?
Post-description rant:
Perhaps I was foolish to switch this on so soon - or indeed at all; I still have inexplicable inabilities to play a huge number of tracks in iTunes Share, across all devices (though it is not the same set of tracks on each device). But on the other hand, I don't see this issue described when I google around, so perhaps this is an anomaly, maybe some inconsistent/corrupt data, and there's a standard set of "switch it off and on again" steps that people might be able to suggest to take care of it.j0ni wrote:
Preamble:
When iOS 8 dropped and my family of 5 had all upgraded, I set up Family Sharing. As it turns out, it's an incomplete solution and is therefore completely useless for isolating the spendy account (home sharing, iTunes share, etc.), but setting all that aside, I figured we might give it a shot.
It's OK - it's annoying that my kids need permission to download free apps, but OK. However, there is this strange bug I can't explain of figure out how to fix.
Problem description:
My daughter is logged into the iTunes store with her own AppleID and all looks well. However, any time she attempts to open any app at all other than the builtin apps, she gets a popup asking for the password for my AppleID! ***? Why is my AppleID even a thing on her phone?
Post-description rant:
Perhaps I was foolish to switch this on so soon - or indeed at all; I still have inexplicable inabilities to play a huge number of tracks in iTunes Share, across all devices (though it is not the same set of tracks on each device). But on the other hand, I don't see this issue described when I google around, so perhaps this is an anomaly, maybe some inconsistent/corrupt data, and there's a standard set of "switch it off and on again" steps that people might be able to suggest to take care of it.
Wherever I said "iTunes share" I really meant iTunes Match. Sigh. -
Any Adobe techs here? Please Help!!!
HELP! Captivate 4 won't start when disconnected from my network.
Captivate 4 is installed onto my C: drive. All Captivate files are on this drive. In fact, I've tried installing it while connected to my network AND installing it while disconnected from my network... the same problem exists. As long as I am connected to my network, Captivate will open. However, if I am not connected to my network, Captivate will not open.
I sometimes, not always, get a message stating Runtime error 217 at 004D5C7B
Other times a window opens stating:
Adobe Captivate has stopped working. Windows can check online for a solution to the problem the next time you go online.
Windows never seems to do that, though. In the same window, under Problem Details, it says:
Problem Signature:
Problem Event Name: APPCRASH
Application Name: AdobeCaptivate.exe
Application Version: 4.0.1.1658
After spending over an hour with Adobe Tech Support, we found a folder in the Registry, that, when deleted, solved the problem. I was told that the file in the folder (there was only one) was a Captivate preferences file. I wasn’t completely sold on that, though, and I don’t, unfortunately, have the name of the file. The folder was labeled “Adobe”.
Still off the network, I tried to launch Captivate and it worked! Later, I connected to the network. I, then, disconnected from the network and tried to launch Captivate. Once again, it failed to launch (just like before). Believing that the offending file was rewritten, I opened the Registry and navigated to where the Adobe folder was with the file in it. However, no such folder was recreated. So, the fix that I used successfully the first time, no longer applies. I’m back to square one where I can’t launch Captivate unless I’m connected to the company network. This is the only program that does this and I have a host of other Adobe products on the same computer.
Does anyone have any ideas as to why this happens? Any ideas on how to fix my problem so that I can launch Captivate without being connected to the company network?
Thanks in advance for any help.Hi there,
Do you have the latest version of flash player ? Can you try the following steps
1. Close captivate if already opened.
2. Uninstall the flash player from the system. Instructions are here : http://kb2.adobe.com/cps/141/tn_14157.html
3. After successful uninstallation try to install the latest flash player from http://get.adobe.com/flashplayer/
4. After installing the latest flash player. Delete the preferences
Preferences for Windows 7 are located in : C:\Users\<UserName>\AppData\Roaming\Adobe, In this location delete the folder named "Adobe Captivate"
5. Unplug your network cable
6. Now launch captivate. <Let me know if captivate launched fine here>
7. If captivate launched in step 6, then close it and plug in the data cable.
8. Launch Captivate.
Let me know if this worked.
Thanks,
Ashwin Bharghav B
Adobe Captivate Team. -
Just curious, are there any quants in this forum.
well the question is "if you have considerable
experience in financial industry" on tradingapps(a
few years with a software development experienceof
10 or so years). You have some understanding ofthe
models, e.g. Monte Carlo, and you want to pursue a
career to be a quant, what would be the best way?
Do a masters degree in Financial Engineering.
Get some certifications, if yes which ones?
Simply start applying for a position?Seems to work for a lot of Java wannabes that come
here.
Or just go to bed and dream you are a quant.....I seem to have settled on that last one...
%I mean all the quants I have come across, not that I have come across many, have a PhD degree in maths or something. So is it kind of a [re requisite now or not? -
Just started dabbling with it here now and it seems to be the Biz, any opinion?
When I find bugs I write a JUnit test to mimic the
behavior right away. Then I fix the bug and make the
test pass. This brings up a good but often overlooked point: As a general rule, it's good to write the tests before you implement the code you're testing, but write them as if the code being tested were already complete. You'll get failures at first, but when you see the failures switch to successes, you can be more confident that it's because your code works, and not just because your test missed something. No guarantees of course, just a somewhat higher confidence level. Plus, as was pointed out, it forces thinking like a client of your code, which in turn can illuminate design shortcomings.
On the flipside, if the tests start succeeding too soon, then you know you've got a problem with your test code. So this technique has the benefit of providing some level of sanity checking on the tests themselves.
Fowler and the whole JUnit and XP camp are pretty vocal about writing the tests first, IIRC. I don't follow that guideline rigidly myself, but I do generally write the tests quite early--usually after the code being tested has some skeletal structure, but before it's complete. -
Despite resetting the SMC, the battery still does not charge. Any quick fix here?
My MacBook Air is unable to charge the battery. Have tried resetting the SMC by pressing shift-ctrl-alt and the power at the same time and release them all at the same time. Hereafter I have pressed power on. Still it will not charge beyond 1%. Have tried an alternative power cord and adaptor for another MacBook Air from the same household, but no change here. Any quick fix ideas? My MacBook Air runs OS X Version 10.9.4. 1.4 GHz Intel Core iS, 4 GB 1600 MHz DDR3.
Sorry but it is in Danish language. Any good?
Batterioplysninger:
Modeloplysninger:
Serienummer: C014311007QF90LAP
Producent: DP
Enhedsnavn: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware-version: 511
Hardwarerevision: 000a
Cellerevision: 1210
Oplysninger om batterispænding:
Resterende kapacitet (mAh): 38
Fuldt opladt: Nej
Oplader: Nej
Fuld ladekapacitet (mAh): 7504
Oplysninger om batteritilstand:
Antal cykler: 3
Betingelse: Normal
Batteri installeret: Ja
Strømstyrke (mA): 0
Spænding (mV): 7107
Energiindstillinger til system:
AC-strømforsyning:
Interval for vågeblus for system (minutter): 1
Interval for vågeblus for disk (minutter): 10
Interval for vågeblus for skærm (minutter): 10
Afbryd vågeblus ved ændret spændingskilde: Nej
Afbryd vågeblus, når skærmen slås op: Ja
Afbryd vågeblus via LAN: Ja
AutoPowerOff Delay: 14400
AutoPowerOff Enabled: 1
Aktuel strømkilde: Ja
DarkWakeBackgroundTasks: 1
Vågeblus dæmper lysstyrken: Ja
PrioritizeNetworkReachabilityOverSleep: 0
Standby Delay: 10800
Standby Enabled: 1
Batteri:
Interval for vågeblus for system (minutter): 1
Interval for vågeblus for disk (minutter): 10
Interval for vågeblus for skærm (minutter): 2
Afbryd vågeblus ved ændret spændingskilde: Nej
Afbryd vågeblus, når skærmen slås op: Ja
AutoPowerOff Delay: 14400
AutoPowerOff Enabled: 1
DarkWakeBackgroundTasks: 0
Vågeblus dæmper lysstyrken: Ja
Formindsk lysstyrke: Ja
Standby Delay: 10800
Standby Enabled: 1
Hardwarekonfiguration:
UPS installeret: Nej
Oplysninger om oplader:
Tilsluttet: Ja
Id: 0x07a1
Watt (W): 45
Familie: 0x0085
Serienummer: 0x00f18097
Oplader: Nej -
** New Install MBP from Tiger 10.4.10...Best Way? Any LOGIC users here?
Okay, before you say it, yes, am asking about LOGIC users here to see if they noticed an increase in FPU or DECREASE with new UPDATE, with first LEOPARD, there were spikes, and it used more CPU than TIGER (some are still waiting for Pro Tools)..
Anyway, what is the best way to update to Leopard and still keep my emails (10 different accounts) and just update to LEOPARD ? MBP is my lifeline and I don't want to back up, just install my NFS then go to update, will that work!
Thanks in advance!Catherina wrote:
... What is the best way to do this?
The best way, really the only way, is to purchase Snow Leopard.
Online (UK): http://store.apple.com/uk/product/MC573/mac-os-x-106-snow-leopard
Elsewhere: call the phone number in the Apple Online Store.
Apple's price is $19.99, £14.00, €18.
Snow Leopard is not available to download from any legitimate source.
Once you install Snow Leopard, upgrade iTunes to version 10.7 or the latest, iTunes 11.
iTunes 10.6.3 is the last version of iTunes to support Mac computers with Mac OS X 10.5.8 with either Intel or PowerPC processors, but since you have an Intel iMac, the best solution is to purchase Snow Leopard. Leopard is no longer available from Apple and prices from aftermarket vendors can be unreasonably high. -
Ok everyone here i am again since my question remains unanswered.
I am capturing some DV footage in Final cut studio 2 to be edited and exported on a SD DVD. This footage shows strange lines around the edges i.e subject's head and shoulders specially when there is movement.
It only happens when the footage is played in FCP. However if i play it directly on a monitor through DV Deck it plays fine.
I have even tried the easy setup for capture.
Any Idea?Totally agree, it should be. But there must be some initial setting we've overlooked because by simply capturing using DV/DVCPro NTSC preset, the end product of SD DVD comes out choppy/interlace especially in motion scenes. And I've tried all versions of field dominance and compressor methods.
Without changing anything in the workflow except capturing in uncompressed mode, the interlace issue vanished completely (for me).
Snow, can you suggest the workflow you would use for capturing SD DV? I'd love to try it and see (as I'm sure A1lens would too).
Message was edited by: fiaafnr
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