Just finished my first Java application. What's next?

Thanks to the kind help from everyone on this forum and some intensive labor for the last couple of months, I've finally given birth to my first Java application. I used Netbeans as my IDE of choice. During the development stages I would run my project directly from the IDE. In the project folder, a total of five folders were created: build, dist, nbproject, src, and test as well as two files build.xml and manifest.mf.
Being a newbie in this field, I was wondering about the remaining steps needed to distribute the application. Here are some questions that come to mind:
1) I know I can simply just double-click the project's *.jar* file to get it work. Is that the norm with Java applications or do I need to create a different file? I'm used to seeing *.exe* files. I'm also used to seeing an installation process, which brings me to my next question.
2) Do you simply just zip the entire project folder and allow people to download it on their computer hoping they know how to access the *.jar* file?
3) Seeing that I've only been testing the application in Netbeans, will there be file path or classpath problems if I run it on other computers? Are there necessary steps I need to follow to avoid such problems?
4) Do you take any precautionary steps to protect your code? Do you lock the folders?
5) In the future, if I decide to add a small fee to download the application, how hard would it be to add a password activation feature? (I know this could get pretty complex)
Thanks in advance for all your suggestions.

mohogany wrote:
Thanks to the kind help from everyone on this forum and some intensive labor for the last couple of months, I've finally given birth to my first Java application. I used Netbeans as my IDE of choice. During the development stages I would run my project directly from the IDE. In the project folder, a total of five folders were created: build, dist, nbproject, src, and test as well as two files build.xml and manifest.mf.
Being a newbie in this field, I was wondering about the remaining steps needed to distribute the application. Here are some questions that come to mind:
1) I know I can simply just double-click the project's *.jar* file to get it work. Is that the norm with Java applications or do I need to create a different file? I'm used to seeing *.exe* files. I'm also used to seeing an installation process, which brings me to my next question.It's quite common to provide a shell script (batch file, etc) to launch the app.
2) Do you simply just zip the entire project folder and allow people to download it on their computer hoping they know how to access the *.jar* file?You can do. There are also installation utilities around. InstallAnywhere is the only one I've ever used, but others do exist.
3) Seeing that I've only been testing the application in Netbeans, will there be file path or classpath problems if I run it on other computers? Are there necessary steps I need to follow to avoid such problems?Probably. The best way to avoid them is to test them, and to not ever depend on the CLASSPATH environment variable. That's a portability nightmare.
4) Do you take any precautionary steps to protect your code? Do you lock the folders? Nope.
5) In the future, if I decide to add a small fee to download the application, how hard would it be to add a password activation feature? (I know this could get pretty complex) Don't bother. Unless you've got something amazing, in which case you'll be needing lawyers, it's not worth the trouble of charging for it. No offence, but your first Java app is hardly going to set the world on fire anyway.
No matter what you try and do to stop people stealing your code, they'll manage it. Or, alternatively, just steal your idea instead.

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user11164565 wrote:
I just passed my first (Internationally Recognized) Oracle exam 1Z0-047. Hmmm, i got %83. I think its good since its my first exam, i felt i could make it better up to %90+.
The paper shows 9 bullet points of topics that i may show review. The topics they mentioned i know it really well. Shall i take the exam again? Be cool. - thats good. Congratulations.
NO DO NOT TRY TO TAKE ANY PASSED EXAM AGAIN - its against certification candidate agreements : [http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=138]
Although the suggested topics are a guide dont dwell on them too much; if you feel you know them ell enough thats fine; move on. Because of the effects of small samples sizes on individual topics these can easily become skewed.
I don't think its a big deal probably %83 is good. Anyway, the exam center gave me a printed paper of my total score. They said Oracle will send another Certification to my address. WhicCertification is official? The one i have been given by the exam center is a printed cert (black and point). Which one should i show to the employers?
Keep both. 1z0-047 is an exam with fulfills a certification requirement so you get a success pack including a certificate; and thats even more important. Thats the best one to show to your employer; but it may be 8 / 10 weeks beforeyou received it. (NB: Oracle does not send a copy of your exam report - they will only send certificates - however there might be changes when they move to Prometric).
I'm happy as well as sad because i knew the mistakes i made are silly (i wish to rid of the bullet points argghhhh) + i did the exam after having at least 3 months college hands on experience.Then your mistakes will help you for the future.
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Screenshot: http://home.no/filipsprogram/DUMP/Shot0001.JPG
I have attached the full source code for my program, if someone could take a look at it I would be very greatful:
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* AlfapetSok.java
* Created on den 29 juni 2006, 10:39
package AlfapetSok;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.io.*;
import java.io.*;
import org.netbeans.microedition.lcdui.TableModel;
* @author filip ([email protected])
public class AlfapetSok extends MIDlet implements CommandListener, ItemCommandListener {
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    private org.netbeans.microedition.lcdui.SimpleTableModel simpleTableModel2;
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    private Command screenCommand2;
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int crc = i;
for (int j = 8; j > 0; j--) {
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crc = (crc >>> 1) ^ polynomial;
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crc >>>= 1;
return crc;
public int calculateCRC32(byte[] buffer) {
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crc = tmp1 ^ tmp2;
return crc;//((crc % 0xFFFFFF) & 0xFFFFFF); //24-bit CRC :-)
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try {
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DataInputStream d = new DataInputStream(is);
int antalord = 89361;
int[] array = new int[antalord];
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array[i] = d.readInt();
return array;
} catch (Exception e) {
System.out.println("FEEEEEEL!!!!: "+e.toString());
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int low=0;
int high = buffer.length-1;
int mid;
while (low <= high)
mid= (low + high) / 2;
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if (target < buffer[mid])
high = mid - 1;
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low = mid + 1;
return -1;
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* @param command the Command that ws invoked
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public void commandAction(Command command, Item item) {
// Insert global pre-action code here
if (item == textField1) {
if (command == okCommand1) {
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String s2= s.toLowerCase();
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if (displayable == mainForm) {
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mainForm = new Form(null, new Item[] {
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get_spacer1(),
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public Command get_exitCommand() {
if (exitCommand == null) {
// Insert pre-init code here
exitCommand = new Command("Avsluta", Command.EXIT, 1);
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public TextField get_textField1() {
if (textField1 == null) {
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* @return Instance for okCommand1 component
public Command get_okCommand1() {
if (okCommand1 == null) {
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okCommand1 = new Command("S\u00F6k", Command.OK, 1);
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simpleTableModel1 = new org.netbeans.microedition.lcdui.SimpleTableModel();
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new String[] {
new String[] {
null,
new String[] {
null,
null,
new String[] {
null,
null,
new String[] {
null,
null,
new String[] {
null,
null,
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public org.netbeans.microedition.lcdui.SimpleTableModel get_simpleTableModel2() {
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simpleTableModel2 = new org.netbeans.microedition.lcdui.SimpleTableModel();
simpleTableModel2.setValues(new String[][] {
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"Ord",
"Finns?",
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* @return Instance for spacer1 component
public Spacer get_spacer1() {
if (spacer1 == null) {
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spacer1 = new Spacer(1000, 1);
// Insert post-init code here
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public org.netbeans.microedition.lcdui.TableItem get_tableItem1() {
if (tableItem1 == null) {
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public Command get_screenCommand1() {
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initialize();
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Right now, my opinion in java is that it's too
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First of all, you're OT.
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Finally add dukes and give 'hem away.
Bye.

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Data/Library/Caches/com.apple.iPhoto folder
3 - launch iPhoto and try again.
NOTE 1: If you're moved your library from its default location in your Home/Pictures folder you will have to point iPhoto to its new location when you next open iPhoto by holding down the Option key when launching iPhoto. You'll also have to reset the iPhoto's various preferences.
NOTE 2: In Lion and Mountain Lion the Library folder is now invisible. To make it permanently visible enter the following in the Terminal application window: chflags nohidden ~/Library and hit the Enter button - 10.7: Un-hide the User Library folder.

How can i run java application at system startup just liks as services

How we can run java application at the time of system
starts up just like as services.

Hi,
At first you have to create an exe of the class file.
for that go to the site www.duckware.com/java2exe.html
Click on the j2exe23c.exe(75k) download it and install in ur system. convert the class file to windows exe.
The put the exe in the startup folder in windows.
If ur not able to find that folder search for it and put that exe in that folder.

I have Win7Pro64, tried to Un-Install Firefox control panel, no luck, tried running helper.exe from Uninstall folder and it says "Not a Valid Win-32 Application" What gives?? Just want to update to 3.6.4 and that didn't work either so I'm trying to remove

Running Win7Pro64. Tried to update to 3.6.4 and it failed. It said to download the whole program so I did. Tried to install and says that the "License File" is missing. SO I go to un-install 3.6.3 myslef with Control Panel. All that did was remove Firefox as a listed program in control panel, all of it is still there in Explorer and it runs fine. So I go to use Helper.Exe under the Uninstall folder of Mozilla Firefox and when I click that, it says "Not a Valid Win-32 Application" What's up with that?? All I want to do is remove 3.6.3 so that I can clean install 3.6.4. I tried installing 3.6.4 two different ways with failures both times. I tried to remove 3.6.3 using two different ways, and that also failed both times.
== This happened ==
Just once or twice
== I tried updating to 3.6.4. It failed both with the update and the full download, so tried to un-install 3.6.3 in control panel, then helper.exe with no luck.

You don't want to update to 3.6.4, trust me. Stay with 3.6.3. If you need to download it again you can find it here:
http://releases.mozilla.org/pub/mozilla.org/firefox/releases/3.6.3/win32/en-US/

My new iPad air is suddenly asking for a pass code. I have only just finished restoring it from my iPad 2 and I didn't set one. The one I used before doesn't work. What can I do?

My new iPad air is asking for a pass code. I have only just finished restoring it via iTunes from my ipad2 and I didn't set one. The one I used before doesn't work. What can I do?

http://support.apple.com/kb/HT1212

What is the recommended way to launch a web-start enabled Java application?

Hello,
I have a simple web-start enabled Java application, which I can launch from a brower by entering :
https://xx.xx.x.xxx/MyApp/launch.html
This method would show me a page. I then had to click on a link to run my application.
I noticed that I could also launch my program by entering :
https://xx.xx.x.xxx/MyApp/launch.jnlp
This method would run my application right away.
I wonder if there is a recommended way to launch/run a web-start enabled Java application?
Thank you,
Akino

user8708553 wrote:
..to directly launch my application and bypass the HTML page, why is there a need to
display the HTML page and make the user do a click?There are a number of advantages to using the web page. Including..
<li> An explanation to the end-user of what the application does (a 'sales pitch').
<li> Provision of screen shots of the app. (more 'sales pitch').
<li> A description of what security environment it requires, and why.
<li> Access to using the deployJava.js* to ensure the end-user actually has Java installed & has a suitable minimum version of Java, before they ever get access to the launch button/link.
* http://download.oracle.com/javase/6/docs/technotes/guides/jweb/deployment_advice.html#deployingApplications

Just finished my first Java application. What's next?

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