How to access the Swing Conponents in different Classes

Hi
In swing based application, Parent Frame filled with multiple Panels, for each panel i created separate class and added the required swing component.
components in one panel class require to update/modify components in another panel class.
For solving this problem i made the components & required methods in a class as STATIC and directly access from another class.
Is it right approach?
is there any other approach to solve this issue?
Thanks
nidhi

knidhi wrote:
Hi
In swing based application, Parent Frame filled with multiple Panels, for each panel i created separate class and added the required swing component.
components in one panel class require to update/modify components in another panel class.
For solving this problem i made the components & required methods in a class as STATIC and directly access from another class.
Is it right approach? No.
is there any other approach to solve this issue?Yes. Learn about the MVC design pattern.
You already implemented the V(iew)-part.
Now you have to create a M(odel) to hold the Information you want to manipulate and display and a C(ontroller) that changes this information upon the user input (could be combined...)
Usually the display components register themselves as Listeners to the model and the model publishes state changes to who ever has been registered...
bye
TPD

Similar Messages

  • OOABAP-How to access the protected methos from a class

    How to access the protected methos from a class..There is a built in class..For tht class i have created a object..
    Built in class name : CL_GUI_TEXTEDIT
    method : LIMIT_TEXT.
    How to access this..help me with code

    hi,
    If inheritance is used properly, it provides a significantly better structure, as common components only
    need to be stored once centrally (in the superclass) and are then automatically available to subclasses.
    Subclasses also profit immediately from changes (although the changes can also render them invalid!).
    Inheritance provides very strong links between the superclass and the subclass. The subclass must
    possess detailed knowledge of the implementation of the superclass, particularly for redefinition, but also in
    order to use inherited components.
    Even if, technically, the superclass does not know its subclasses, the
    subclass often makes additional requirements of the superclass, for example, because a subclass needs
    certain protected components or because implementation details in the superclass need to be changed in
    the subclass in order to redefine methods.
    The basic reason is that the developer of a (super)class cannot
    normally predict all the requirements that subclasses will later need to make of the superclass.
    Inheritance provides an extension of the visibility concept: there are protected components. The visibility of
    these components lies between that of the public components (visible to all users, all subclasses, and the class itself), and private (visible only to the class itself). Protected components are visible to and can be used by all subclasses and the class itself.
    Subclasses cannot access the private components  particularly attributes) of the superclass. Private
    components are genuinely private. This is particularly important if a (super)class needs to make local
    enhancements to handle errors: it can use private components to do this without knowing or invalidating
    subclasses.
    Create your class inse24 and inherit this CL_GUI_TEXTEDIT
    class in yours. You can then access the protected methods.
    Hope this is helpful, <REMOVED BY MODERATOR>
    Edited by: Runal Singh on Feb 8, 2008 1:08 PM
    Edited by: Alvaro Tejada Galindo on Feb 19, 2008 2:19 PM

  • How to access the text symbols of a class

    Hi Experts,
    Can anyone pl. tell me how to access the text symbols of a class.
    Thanks,
    Uday.

    Hi,
    Please check
    http://help.sap.com/saphelp_nw04s/helpdata/en/43/1f6442a3d9e72ce10000000a1550b0/frameset.htm

  • How to access the e-mails which are stored in different folders via Mac

    Hi guys, I am new to Mac. My problem is about the setting of Mac Mail.
    There are 8 folders with my hotmail account in order to automatically sort e-mail into folders. I only can get the e-mails of inbox folder via Mac Mail software. I am wondering how to access the other e-mails which are stored in other folders.
    Thanks a lot!

    I don't think that things have changed going from 10.5 Mail to 10.6 Mail in this regard (I need to log on to my laptop more often). So, assuming that my premise is correct, in the left hand column of the mail window, underneath your inbox, drafts, sent, trash, and junk mailboxes, there should be the descriptive name of your mail account, written in gray capital letters, with a gray triangle to the left of that name. If the gray triangle is pointing to the right, click on it so that it points downward. That will expand the account view of mailboxes on the server. You should be able to see all of the other folders.

  • How to access the parent class variable or object in java

    Hi Gurus,
    I encounter an issue when try to refer to parent class variable or object instance in java.
    The issue is when the child class reside in different location from the parent class as shown below.
    - ClassA and ClassB are reside in xxx.oracle.apps.inv.mo.server;
    - Derived is reside in xxx.oracle.apps.inv.mo.server.test;
    Let say ClassA and ClassB are the base / seeded class and can not be modified. How can i refer to the variable or object instance of ClassA and ClassB inside Derived class.
    package xxx.oracle.apps.inv.mo.server;
    public class ClassA {
        public int i=10;
    package xxx.oracle.apps.inv.mo.server;
    public class ClassB extends ClassA{
        int i=20;   
    package xxx.oracle.apps.inv.mo.server.test;
    import xxx.oracle.apps.inv.mo.server.ClassA;
    import xxx.oracle.apps.inv.mo.server.ClassB;
    public class Derived extends ClassB {
        int i=30;
        public Derived() {
           System.out.println(this.i);                  // this will print 30
           System.out.println(((ClassB)this).i);  // error, but this will print 20 if Derived class located in the same location as ClassB
           System.out.println(((ClassA)this).i);  // error, but this will print 20 if Derived class located in the same location as ClassA
        public static void main(String[] args) { 
            Derived d = new Derived(); 
    Many thanks in advance,
    Fendy

    Hi ,
    You cannot  access the controller attribute instead create an instance of the controller class and access the attribute in the set method
    OR create a static method X in the controller class and store the value in that method. and you can access the attribute by 
    Call method class=>X
    OR if the attribute is static you can access by classname=>attribute.
    Regards,
    Gangadhar.S
    Edited by: gangadhar rao on Mar 10, 2011 6:56 AM

  • How to access the remote Objects Without Db_links?

    Hi ,
    I want to know how to access the remote objects without db_link.That is i want to access a object in some other server which has different database.

    SanjayBala, just so you know that it is possible to create a database link in Oracle to non-Oracle databases in some circumstances. Look up Generic Connectivity aslo know as Heterogenous Services. With 11g Oracle has basically renamed the feature and replaced it with somethinkg named ike DG4ODBC.
    I have not spent time studying the details for DB4ODBC but with HS Oracle provided the interface and you had to obtain the necessary ODBC driver on your own. I had Oracle on AIX reading and writing to SQL Server on Windows but the developers chose to write a java program and connect to both via it. On Windows and Linux platforms the necessary ODBC drivers might be available without the requirement to go out and purchase one.
    The Oracle Open Gateway product is an advanced version of the above features with drivers for specific non-Oracle databases included like DB2 or Informix.
    HTH -- Mark D Powell --

  • How to access the mysql using ordinary command line in Azure Website?

    Hi
    I deploying Django project on Azure. I created project and MySQL db according this method: https://pytools.codeplex.com/wikipage?title=PollsDjangoSql . I can create tables using django command "syncdb" in Visual Studio. I see
    db structure in SQL Explorer. All works. But now I need to get access directly to mysql.  For example with a view to set encoding of some column, or set permissions, change user password, etc.
    I found about many different tools and methods in Microsoft portal. But the purpose of these tools, how to install it and how to use it is a very entangled (After several attempts to find out what's what two weeks later I found on my computer
    three dozen programs with unknown purpose. I doubt that I need to install so many tools to just add the user in mysql).
    How to access the mysql using ordinary command line (or the same simple tool) in my case?

    Hi pvgdrk,
    To get access directly to a mysql database, you can use the commandline tool(open a cmd window-->type mysql the commadline ) or the
    GUI MySQL workbench.
    Since this is a question about MySQL, I would suggest you post your question in a dedicated MySQL forum. You will get more prompt response.
    If you have any feedback on our support, please click
    here.
    Eric Zhang
    TechNet Community Support

  • How to access the *.java file corresponding to a TypeElement T?

    Here is a problem:
    How to access the *.java file corresponding to a TypeElement T from a AnnotationProcessor environment?
    Let us say the hook method
    public boolean process(Set<? extends TypeElement> annos, RoundEnvironment roundEnv)
    is invoked with a TypeElement T such that T.getQualifiedname() = "a.b.c.X"
    And the problem is how to locate the file that has the *.java source code for a.b.c.X?
    That is the file that has the source code for a.b.c.X say "some/path/a/b/c/X.java"?
    For simplicity, let us assume that TypeElement T corresponds to a top-level Java class.

    Pinaki wrote:
    That is not something you as the annotation processor author should be asking about. That is something you the person configuring the javac environment should set up via the -d option or its equivalent.
    I strongly recommend using a separate output directory hierarchy.That is the way the current implementation is. The annotation processor takes a -Aout= <some directory path> to write generated output relative to a user-specified location (which defaults to the class output location).That is contrary to the design of the annotation processing facility. The intended use is for that information to be configured via options like "javac -d".
    Additionally, IMO it is a serious configuration error to put generated files and input files, presumably tracked under version control, in the same directory. Interesting you said that. We are just running some "field trial" with these things and some users want them to be in the same directory of the original *.java files (especially when their source files are spread across many roots) .
    Who knows what the user wants?The user does and the user is free to (mis)configure their environment however they like ;-) However, that is the user's option and the user has control of this via the javac command line. The annotation processor is not the proper place to configure this setting; see slide 7 of http://blogs.sun.com/darcy/resource/J1_2006-BOF-0606.pdf for some thoughts on different roles in annotation processing.
    presumably tracked under version control, in the same directory.version control is another 'usability issues' that we are trying to get our heads around with this stuff. "To check-in or not?" - that seems to be the question. When presented these facilities without any cue, "the users" were divided -- some wanted them to be checked-in, some did not. The context where these generated files being used -- there exists some rationale to check them in a version control system.The right answer depends on the circumstances, but IMO generally generated files should not be checked in under version control, especially if they are derived from other source files. Checking in generated files of this nature just creates the opportunity for them to get out of date with the originating files.

  • In VB Programming code -- How to access the formula for suppressing a field

    In VB Programming code -- How to access the formula for suppressing a field
    I am using Crystal Reports 2008 v1
    Using VB code, I am attempting to modify a Crystal Report before exporting it into a PDF format and then displaying it on the Web.
    My problem is that I am unable to access the formula used to dynamically suppress a field.
    The following code is working:
    mySections = rd.ReportDefinition.Sections
    For Each mySection As CrystalDecisions.CrystalReports.Engine.Section In mySections
       ' myFieldToChange is a String set to the text of the field I need to adjust the Suppression
       iloop = 0
       For Each RecObj As CrystalDecisions.CrystalReports.Engine.ReportObject In mySection.ReportObjects
               If mySection.ReportObjects.Item(iloop).Name.ToLower = myFieldToChange Then
                   myTextObject = CType(mySection.ReportObjects.Item(iloop), CrystalDecisions.CrystalReports.Engine.TextObject)
                   myTextObject.Text = "new field text goes here"
                   mySection.SectionFormat.EnableSuppress = True
                   '  Here is where I want to change the formula for the Suppression
                End if
                iloop = iloop + 1
        Next
    Next
    I can not find any reference to the actual suppression formula in the SDK help file.
    Note, the EnableSuppress can be set to True for False, but if there is a formula for dynamic suppression, the True or False value is overwritten.  The results of the formula determine the suppression.
    Is there a way to reference this formula.  I know that I can put on in using the Crystal Report Designer software, I need to modify this formula using VB code and the SDK.

    Hello, Mark;
    If you are using the ReportDocument object you do not have access to the Conditional Suppression formula. You can get around it by using a formula field in the report for the supression and then using the FormulaField code to change it at runtime.
    If you want to change the supression condition directly at runtime you need to use RAS and the ReportClientDocument.
    Elaine

  • How to display the header data on different position in alv report

    hi all,
    how to display the header data on different position in alv report.
    for example ,
    customer                                                   name
      xxxx                                                         xxxx
                     vendor        name     street 
                      xxxx         xxxx      xxxxx
    pls   help me .

    hi
    as per my understanding you need to trnasfer header internal table data  to pdf..
    please check the following links for internal table to pdf..
    Convertion of Internal table data to PDF
    This link is related to ur issue
    Re: how to insert the calling of the FM: OTF to PDF
    Thanks

  • How to access the photos on icloud

    hi
    how to access the photos which i saved in i cloud, from my iPhone 5,
    Note: i do not use any PC. and i only have purchased 20 GB of space on an annual sub. so as to save my photos, and create space in my phone and now i am unable to access it,
    please advise
    thanks
    xxv

    There isn't really a way to "save" photos to iCloud currently with non-beta software.
    iCloud is involved with photos in 2 ways -- backup and Photo Stream.
    Backup of an iOS device includes Camera Roll photos but they cannot be viewed at iCloud.com -- the backup can only be used when doing a restore of an iOS device.
    Photo Stream photos also cannot be viewed at iCloud.com; Photo Stream is designed as a method of transferring photos from one device to another and is not designed to store the photos. More info http://support.apple.com/kb/HT4486
    There is a new feature -- "iCloud Photo Library" -- coming sometime after the iOS 8 release next week: http://www.macrumors.com/2014/09/12/apple-demotes-icloud-photo-library-beta/

  • I used a partitioned HDD for time machine, using a partition already containing other data files. I am now no longer able to view that partition in Finder. Disk Utility shows it in grey and "not mounted". Any suggestions of how to access the files?

    I used a partitioned HDD for time machine, using a partition already containing other data files. I am now no longer able to view that partition in Finder. Disk Utility shows it in grey and "not mounted". Any suggestions of how to access the files? Does using time machine mean that that partition is no longer able to be used as it used to be?
    HDD is a Toshiba 1TB, partitioned into two 500GB partitions.
    OS X version 10.9.2

    Yes, sharing a TM disk is a bad idea, and disks are cheap enough so that you don't need to.
    Now
    Have you tried to repair the disk yet

  • How to access the global data in user exit.

    Hi All,
    How to access the global data in user exit.
    the question is that when we were writing a code in the FM. i need to read data from the standard program like newly created documen and this document number need to be accessed in my program.
    this document number is not imported to the FM i needed to access for frther proceed.
    Thanks in advance.

    Hi,
    See the below PDF file by Jeff Goldstein. There you can find all the details about accessing data outside of the exit.
    [SAP User Exits and the People Who Love Them|https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/208811b0-00b2-2910-c5ac-dd2c7c50c8e8]
    This will help you to solve your problem.
    Regards
    Karthik D
    Edited by: Karthik D on Dec 2, 2008 4:18 PM

  • I have 2 game centers on 1 Apple ID and it willl only access 1 of them may someone tell me how to access the other one

    I have 2 game centers on 1 Apple ID and it will only access 1 of them may someone tell me how to access the other one

    You don't have to use the same ID for iCloud as you do for purchasing.  You can just set up iCloud using your other ID. 
    If your have already have another account, you have to go to Settings>iCloud, tap Delete Account, choose Keep on My iDevice when prompted, set up your new account with the other ID, turn on your iCloud data syncing and when prompted, choose Merge to upload your data to the new account.

  • Nokia Lumia 928 apparently died after an attempted Windows 8.1 update.  Replacement phone arrived the next day.  How can I restore my contacts, photos, etc.?  Backup assistant is no help and I don't know how to access the Cloud.

    Nokia Lumia 928 apparently died after an attempted Windows 8.1 update.  Replacement phone arrived the next day.  How can I restore my contacts, photos, etc.?  Backup assistant is no help and I don't know how to access the Cloud.

    Did you have the phone set to backup things to the One Drive on Microsoft servers?

Maybe you are looking for

  • Service PO with Freight Cost

    Hi Experts, Please let me know the possible solution for the below scenario: We have created a Service PO (no service master data), service cost per qty is 5000 and freight cost is Rs. 500 (entered in the condition type). Ex. Sending a Roll for clean

  • Difference between USER-EXISTs and Customer-Exits???

    Hi, Can anyone give me the difference between the user-exits and customer-exits? Please respond at the earliest. Thanks in advance.

  • XI Help

    Hello..       If i wanted to send a message from SAP to webserver..what configuration is required in I'Builder? Thanks..

  • When if ever will 1.2 stable land?

    I have heard of the 1.2 Beta being unusable in that pull down tray does not work. Also it is way too complicated to install for the average user!

  • Is there a difference in the iphone 5 and iphone 5s case?

    is there a difference in the iphone 5 and iphone 5s case?is there a difference in the iphone 5 and iphone 5s case?