'this' doesn't work with static main declaration

Hi!
Is it normal that the class instance accessor 'this' doesn't work when using the public static void main method? When yes, can somebody explain why?
Marc
example:
public class JavaTest
static String hello = "Hello world";
public static void main(String args[])
System.out.println("hello before modifying:" + hello);
changeData(hello);
System.out.println("hello afterwards:" + hello);
public static void changeData(String hello)
// here comes the error
this.hello = "Hello Luxembourg";

Can you tell me why 'this' does not work here, Dmitri
S.?According to "The Java Language Specification",
"keyword this may be used only in the body of an instance method, instance
initializer or constructor, or in the initializer of an instance variable of a class. If it
appears anywhere else, a compile-time error occurs."
You've tried to use it in static method which may be executed when there is no instances of that class (as it happens in your code) and does not correspond to any particular instance of the class while "this" means "this class instance".

Similar Messages

  • TS1702 How do I hide purchased apps with iOS 6? With iOS 5 you can swipe the unwanted app to hide it, but this doesn't work with iOS 6.

    How can I hide an app from the list of purchased apps using iOS6? With iOS 5 you can swipe the icon to display a red Hide icon, but this doesn't work with iOS 6. Suggestions (that work) will be appreciated.

    Yes. On a computer. Not ios6.
    On iTunes on your computer under purchased, select the x on the top corner. That will hide them.

  • Evaluate function doesn't work with Static values

    Hi All,
    I have been trying to call a evaluate function and have been successfully in calling it..but i face problem when i pass any static values to it...
    For eg
    when i try calling the function using one of the columns...it works fine
    Evaluate('dbo.Hello(%1)',"Dim table_name"."Department" )
    the function normally changes it to upper case.so i get all the value in the column in department in upper case.
    but when i call any static value like
    Evaluate('dbo.Hello(%1)','hello') it throws the following error..
    [nQSError: 43113] Message returned from OBIS. [nQSError: 43119] Query Failed: [nQSError: 42015] Cannot function ship the following expression: Evaluate( dbo.Hello(%1),'hello') . (HY000)
    Can any one please help me in this
    Regards
    SK

    Which version of Jdev are you using? What are the results you are getting?

  • Tried to run 'socksify firefox' command in RHEL. This Doesn't work with Firefox while all other internet applications could be socksified.

    I use Red hat enterprise linux and I need to connect to AIX servers which host my J2EE applications. I connect mainly for using our application through browser, FTPing and SSH-ing. I use Dante socks client. I socksify every application explisitely that connects our AIX servers. Eg. socksify ssh, or socksify gftp etc. Even I could run 'socksify opera'. However my favourite browser says no for 'socksify firefox'. I do not know if its a issue or may be there are other ways to achieve this. I know I can mention SOCKS proxy in firefox preferences, however I need to connects to several AIX servers through different socks servers. This requires me to use socks.conf. Can anyone help me to use firefox for my J2EE applications? Thank you.

    Works fine here if I click that link in your above post.<br />
    <pre><nowiki> <a id="jelentkezes">&nbsp;</a></nowiki></pre>
    Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).<br />
    See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]

  • HT201210 hi everyone, i have a problem about my iphone 4S, doesn't work with wifi connection and bluetooth since upgrade to the IOS 7.0.3. Can anyone can help me tosolve this problem?????Thank's regards paulus

    hi everyone, i have a problem about my iphone 4S, doesn't work with wifi connection and bluetooth since upgrade to the IOS 7.0.3. Can anyone can help me tosolve this problem?????Thank's regards paulus

    Try the suggestions here to see if they resolve your problem:
    http://support.apple.com/kb/ts1559
    If these don't work you may have a hardware problem. Visit an Apple store for an evaluation or contact Apple Support.

  • The Bluetooth on my 2012 Lexus doesn't work with my iPhone 5.  My old android phone worked perfectly with my car.  Even the tech guy at Lexus couldn't get it to work.  What is apple doing to fix this.

    The Bluetooth on my 2012 Lexus doesn't work with my iPhone 5.  My old android worked perfectly with my car.  Even the tech specialist at Lexus couldn't get it to work.  Lexus said that other iPhone 5s were having the same problem.  What is apple doing to fix this?

    Going to the local Apple store this morning...
    My problem is not uncommon as the board is showing signs of this happening to many others as well. That is where I found the restore and reboot information to try to solve the issue of crashing apps.
    I understand that Apple will not "give away the cow", but letting iPhone users know that the problems they are having are being addressed by Apple is a little more comforting than nothing at all. Other wise, all the apps in world are useless and even more importantly worthless, if a person has to reset/reboot/reload just to get them to work.
    IF Apple can not address the basic problems with todays iPhone apps, why should one believe that the iPhone 3.0 OS is any better? Using a PC comparison, which is better, XP or Vista. If the current iPhone OS of 2.2. what ever is not working that well (as related to down loaded apps and iTunes), will OS 3.0 be any better?
    The waste of time I refer to is in going to the apps store and downloading the apps... Again why by apps if the free version does not work?

  • My cellcom line doesn't work with my iPhone here in Israel, why? Is there any way I can solve this issue?

    My cellcom line doesn't work with my iPhone here in Israel, why? Is there any way I can solve this issue?

    Please explain.
    What does "cellcom line doesn't work with my iPhone" mean?
    What are you trying?  What is happening?
    Where did you buy the iphone?
    Any info abnout your issue at all?

  • When I use Mail and want to paste an emailadress with a right mouse click in the adres field this doesn't work, ofcourse cmd V  works. How can I solve this

    when I use Mail and want to paste an emailadress with a right mouse click in the adres field this doesn't work, ofcourse cmd V  works. How can I solve this

    YAY!  That did it.
    Thank you so much.
    And a Very Happy and Prosperous New Year to you!
    bonnie

  • Mozilla firefox 3.6.4 doesn't work with real player.because of this i don't want to update MF 3.6.3...What can i do

    mozilla firefox 3.6.4 doesn't work with real player...can't download any videos...what can i do
    == This happened ==
    Just once or twice
    == update to 3.6.4. version

    If you install 3.6.3 and don't want it to automatically upgrade you need to open the browser and select "Tools" from the menu bar. Go to "Options". Select the "Advanced" icon. Go to the "update" tab on the "Advanced" menu. Here you can configure how and what Firefox updates.
    Hope that helps.

  • Push mail on iPhone doesn't work with my .mac address, all other accounts working fine. Does anybody experienced problems like this?

    Since upgrading to IOS 5 and using icloud my .mac account doesn't work with push anymore. I'am using two other mail accounts with push function and they work fine. I have heard from other users havong same problem, but does anybody have a solution to this? I have deleted the account and set it up again, worked for one test mail and then failed onwards..

    Since upgrading to IOS 5 and using icloud my .mac account doesn't work with push anymore. I'am using two other mail accounts with push function and they work fine. I have heard from other users havong same problem, but does anybody have a solution to this? I have deleted the account and set it up again, worked for one test mail and then failed onwards..

  • HT5706 I am trying to set up Apple TV with my Uverse WiFi, but I get errors when entering my password.  One site said that Apple TV doesn't work with WPA which Uverse uses.  Is there anyway around this or will Uverse and Apple TV just not work together.

    Trying to set up Apple TV with ATT Uverse.  I get errors when trying to enter my WiFi password.  One site says that Apple TV doesn't work with Uverse because it uses WPA for encryption.  If true, does that mean Uverse subscribers cannot use Apple TV?

    Spurs63 wrote:
    does that mean Uverse subscribers cannot use Apple TV?
    No, that's a rather silly conclusion.
    There are two options:
    stop using the crappy router provided by the ISP.
    Physically connect the ATV to the router via Ethernet.

  • Satellite M40-129: PCMCIA Card doesn't work with Linux

    I have D-Link DWL-G650 with Atheros Chipset which is good supported under linux (madwifi). But if I boot Linux the card is not found. I tested the card with an Fujitsu Siemens Notebook and it worked out of the box!
    Any idea why it doesn't work with my M40-129 ?

    Hi
    Like you know Toshiba doesnt support the Linux and there are no Toshiba drivers for the Linux OS but I was able to find this useful Toshiba page about the notebook configuration with Linux:
    http://newsletter.toshiba-tro.de/main/
    You should check the OS machine compatibility and the other areas.
    Im sure you will find many useful tips.
    Good luck

  • My Custom Converter Doesn't Work With DataModel

    Hi,
    I have this simple object with its custom converter taken from the Core JSF Book. It works fine, but when I put it in DataModel, somehow it didn't get updated. I don't put the whole codes here, only the important parts.
    Any1 knows what is the reason? I have been looking for an answer but I haven't found one. Plz help.
    public class CreditCard {
    private String number;
    public CreditCard(String number) { this.number = number; }
    public String toString() { return number; }
    public class CreditCardConverter implements Converter, Serializable {
    private String separator;
    public void setSeparator(String newValue) { separator = newValue; }
    public Object getAsObject(............);
    return new CreditCard(builder.toString());
    public String getAsString(..............)
    throws ConverterException {
    return result.toString();
    public class MyBackBean{
    private DataModel creditCardDataModel;
    private static final CreditCard[] ccs = {
    new CreditCard("1111 111 111 111"),
    new CreditCard("2222 222 222 222")
    public DataModel getCards(){
    if (creditCardDataModel == null) {
    creditCardDataModel = new ArrayDataModel(ccs);
    return creditCardDataModel;
    <h:dataTable value="#{myBackBean.cards}" var="card">
    <h:column>
    <h:inputText id="card" value="#{card}"/>
    </h:column>
    </h:dataTable>
    Edited by: JW77 on Dec 3, 2009 12:47 AM

    Please explain.
    What does "cellcom line doesn't work with my iPhone" mean?
    What are you trying?  What is happening?
    Where did you buy the iphone?
    Any info abnout your issue at all?

  • Seconds_between doesn't work with variables in SQLScript

    There is a sample procedure:
    create procedure testproc
    language SQLSCRIPT
    as
    l_curtime timestamp;
    l_timedelta integer;
    begin
      select systimestamp into l_curtime from dual;
      select seconds_between(:l_curtime, systimestamp) into l_timedelta from dual;
    end;
    It should return seconds between 2 timestamp values.
    The code returns an error:
    Could not execute 'create procedure testproc language SQLSCRIPT as l_curtime timestamp; l_timedelta integer; begin ...'
    SAP DBTech JDBC: (at 160): inconsistent datatype: line 8 col 10 (at pos 160)
    With «time» and «date» datatypes that's the same. So, seconds_between doesn't work with SQLScript variable (in this example, l_curtime). Is it a normal behaviour or supposed to be a bug?

    Hello,
    I can confirm same behavior - using variable inside seconds_between function leads to error. If you put there static string it is ok.
    Of course you can always create "dummy" table (having 1 row with 1 column) where you will store the result of first call and then you will reference in second. But of course it is not that clean and it will be slower (especially if called many times).
    But I would suggest to wait few more days - there should be SP03 released and everything can be different.
    Tomas

  • Cinema Display (clear) with DVI/ADC box doesn't work with MacBook Pro

    Cinema Display (clear) with DVI/ADC box doesn't work with MacBook Pro when plugged in with a dvi to mini dvi cable. Any ideas what to do to make it work? I lugged the 23" 2500 miles into the wilderness and I need help

    Okay, here's an update: the DVI to ADC adapter does work with the Apple displays that I have tried, but it won't work with the Formac. I have tried multiple time to contact them, but to no avail... they don't even respond to threats of posting my opinion of them, which is this:
    DON'T BUY ANYTHING FROM FORMAC! They make quality products, but their customer service is a big time joke! They won't take care of you.

Maybe you are looking for

  • Difficulty installing HP Laserjet 2015dn printer

    Receipient of a fully functioning Laserjet 2015dn but am at a loss how to install.  In past have only installed direct connect printers using the pin type connections.  I have read the manual and gone to try to download the the driver online.   My OS

  • How do I remove residual frames at the beginning and end of a video?

    I'm making a short clip with black slugs at the beginning and end. But there are two or three residual frames from the incoming clip after the black clip that stay at the beginning and end of the video and I can't remove them.  I've tried trimming th

  • 'Save in Background' option disable in T-code: Mass

    Hi All, I want to do credit account grouping for customer through Mass maintenace in background. But the 'save in background' option is disable in main menu --> Mass maintenace Only Save option is enable there. Pls guide how to make 'Save in backgrou

  • I am not receiving the verification mail, what to do?

    Hi, I want to set up my icloud, but I am not receiving the verification mail. Not on my mac and neither if I try to do this over my iphone. PLEASE HELP I have one appleid which is [email protected] and I have used this for a long time. Used to have m

  • Top 25 Played Playlist updates on computer, but stays the same on iPhone

    Hey guys, I'm hoping someone else can help me. My iTunes Top 25 playlist updates just fine on my iMac, but not on any of my iPhones/iPods. It has stayed the same constantly for about a year now, and I'm wondering if it's a file in the iTunes library