Forwarding events from my menubar class to main class

I'm brand new to swing. I'm trying write an app, and wanted to encapsulate my JToolBar and JMenuBar items, so I made classes to handle each of them. Then from my "main" class I could just call a function and voila.
However the one obvious problem is that my "main" class doesn't know when JToolBar or JMenuBar items have actions. Those classes each handle their own event listening. I was hoping (probably through magic) that I could then forward that action to the main class somehow.
The obvious solution would be to expose the individual toolbar JButtons and JMenuItems and call addActionListener(this) on those items from the "main" class. However I'm hoping to avoid having to expose those items, probably just because I'm anal.
One idea that I've seen but seems kind of not-very-elegant was to create an item to track the state of all things, and pass that item around. Then in my individual actionPerformed() functions I could manipulate that item so that the main class could see those changes.
I imagine I'll have this same issue when I get into more complicated parts of my would-be application than just the menubar. Any help would be appreciated.

OK so I can define the new actions in my main class and then in my toolbar/menubar items I just tell them to use those main class Actions? Hopefully I have as somewhat firm a grasp on this as I think I have. I'll try that out now.

Similar Messages

How to pass events from subpanel(s) to the main VI ?

hi all,
I found a lot of solutions to pass the events from the main VI to the subpanel(s) but none about passing the events from subpanel(s) to the main VI. In the attached VIs, I just want to generate an event in the main_VI.vi when I click on the button positionned in the subPanel1.vi. How can I do that ?
thanks.
Cedric
Attachments:
main_VI.vi ‏13 KB
subPanel1.vi ‏6 KB

Cedric,
You could use a queue to transfer the button data to your main vi.
See the attached files:
subPanel1mod - Detects a button change and Enqueues the state.
main_VI mod - uses the Timeout event to poll for data in the queue.
main_VI mod1 - gets the queue data without having to poll.
Like your orginals, these files are in LV2010.
steve
Help the forum when you get help. Click the "Solution?" icon on the reply that answers your
question. Give "Kudos" to replies that help.
Attachments:
subPanel1mod.vi ‏10 KB
main_VI mod.vi ‏16 KB
main_VI mod1.vi ‏15 KB

In iPhoto, can I file individual events from one year into one main event withouthout m muddling them up?ing them up

In iPhoto, can I file individual events from one year into one main event without muddling them up?

Perhaps I misunderstood you. You want to have a hierarchy
Folder: 2000
->Contains Event for January, February, etc
Folder 2001
-> Contains Event for January, February etc
That sort of thing? Well with Events, no you can't. Yes you can do that with Albums, but not Events.
That said, it's a pretty limited way of organising your photos - in fact you might as well just use folders in the Finder. You can find the photos from any year, month, day with the Calendar tool. Simply click on the Search icon on the bottom, then on the the wee drop down and select the calendar tool.
Want the photos from a particular range - say, June 11 1999 to September 30 2001? Then a Smart Album will do that.
But the problem is that it's often hard to remember the year/month something happened. Did we go to Disney in 1997 or 98? There are other more useful ways that make your snaps more searchable.
Here's a canned answer that I offer that suggests some of the richer organising possibilities of iPhoto. It might spark something.
I use Events simply as big buckets of Photos: Spring 08, July - Nov 06 are typical Events in my Library. I use keywords and Smart Albums extensively. I title the pics broadly.
I keyword on a
Who
What
Where basis (The When is in the photos's Exif metadata). I also rate the pics on a 1 - 5 star basis.
Using this system I can find pretty much find any pic in my 50k library in a couple of seconds.
So, for example, I have a batch of pics titled 'Seattle 08' and a typical keywording might include: John, Anne, Landscape, mountain, trees, snow. With a rating included it's so very easy to find the best pics we took at Mount Rainier.
File -> New Smart Album
set it to 'All"
title contains Seattle
keyword is mountain
keyword is snow
rating is 5 stars
Or, want a chronological album of John from birth to today?
New Smart Album
Keyword is John
Set the View options to Sort By Date Ascending
Want only the best pics?
add Rating is greater than 4 stars
The best thing about this system is that it's dynamic. If I add 50 more pics of John to the Library tomorrow, as I keyword and rate them they are added to the Smart Album.
In the end, organisation is about finding the pics. The point is to make locating that pic or batch of pics findable fast. This system works for me.

How can I assign image file name from Main() class

I am trying to create library class which will be accessed and used by different applications (with different image files to be assigned). So, what image file to call should be determined by and in the Main class.
Here is the Main class
import org.me.lib.MyJNIWindowClass;
public class Main {
public Main() {
public static void main(String[] args) {
MyJNIWindowClass mw = new MyJNIWindowClass();
mw.s = "clock.gif";
And here is the library class
package org.me.lib;
public class MyJNIWindowClass {
public String s;
ImageIcon image = new ImageIcon("C:/Documents and Settings/Administrator/Desktop/" + s);
public MyJNIWindowClass() {
JLabel jl = new JLabel(image);
JFrame jf = new JFrame();
jf.add(jl);
jf.setVisible(true);
jf.pack();
I do understand that when I am making reference from main() method to MyJNIWindowClass() s first initialized to null and that is why clock could not be seen but how can I assign image file name from Main() class for library class without creating reference to Main() from MyJNIWindowClass()? As I said, I want this library class being accessed from different applications (means different Main() classes).
Thank you.

Your problem is one of timing. Consider this simple example.
public class Example {
    public String s;
    private String message = "Hello, " + s;
    public String toString() {
        return message;
    public static void main(String[] args) {
        Example ex = new Example();
        ex.s = "world";
        System.out.println(ex.toString());
}When this code is executed, the following happens in order:
1. new Example() is executed, causing an object to constructed. In particular:
2. field s is given value null (since no value is explicitly assigned.
3. field message is given value "Hello, null"
4. Back in method main, field s is now given value "world", but that
doesn't change message.
5. Finally, "Hello, null" is output.
The following fixes the above example:
public class Example {
    private String message;
    public Example(String name) {
        message = "Hello, " + name;
    public String toString() {
        return message;
    public static void main(String[] args) {
        Example ex = new Example("world");
        System.out.println(ex.toString());
}

Please help me Urgent...Failed to load Main-Class manifest attribute from..

*When i double clicked on any jar file showing an error like: {color:#ff0000}Failed to load Main-Class manifest attribute from....jar{color}*
Can any one please suggest me a way rectify this error.
Thanks in adv,
-VNath

Edit the deployment profile with the "Settings" context menu option and then under "JAR Options" make sure "Include Manifest..." is checked and then put the main class in "Main Class". Example: com.foo.myapp.Application1
Rob

Failed to load Main-Class manifest attribute from

hi all
i created jclient swing based one form. and in this form i use BC4j and database employee table. when i run this java file from jdeveloper it works fine. when i deploy this project in simple archive jar file it gives me the above error. my application structure is this.
workspace
project1 (BC4j)
project2 (my java file)
i select project2 and do the deployment process. after creating jar file i use the following command.
java -jar myapp.jar
it gives me the following error
"Failed to load Main-Class manifest attribute from"
can any body help me out
Thanks in Advance

Edit the deployment profile with the "Settings" context menu option and then under "JAR Options" make sure "Include Manifest..." is checked and then put the main class in "Main Class". Example: com.foo.myapp.Application1
Rob

Error checking for persistence unit annotations in the main class

Hi
When I tried running the examples from the SUN JMS tutorials, I landed in a problem. I did the following changes...
1. I created a new project in eclipse
2. created the java class 'Producer.java' in a package..(the one in java tutorial is not in a package)
3. copied the build.xml and made the the respective changes.
I successfully created the jar file, but when I tried to run the the application
appclient -client JMSProducer.jar eg.jms.P2PProducer.Producer queue 3it throws the following exception:
Nov 29, 2006 3:40:33 PM com.sun.enterprise.deployment.annotation.impl.ModuleScan
ner getElements
WARNING: Cannot load ${main.class} reason : ${main.class}
Nov 29, 2006 3:40:33 PM com.sun.enterprise.appclient.MainWithModuleSupport <init
>
WARNING: ACC003: Application threw an exception.
java.lang.RuntimeException: Error checking for persistence unit annotations in t
he main class
        at com.sun.enterprise.appclient.StandAloneAppClientInfo.classContainsAnn
otation(StandAloneAppClientInfo.java:88)
        at com.sun.enterprise.appclient.AppClientInfo.mainClassContainsPURefcAnn
otations(AppClientInfo.java:342)
        at com.sun.enterprise.appclient.AppClientInfo.appClientDependsOnPersiste
nceUnit(AppClientInfo.java:311)
        at com.sun.enterprise.appclient.AppClientInfo.completeInit(AppClientInfo
.java:164)
        at com.sun.enterprise.appclient.AppClientInfoFactory.buildAppClientInfo(
AppClientInfoFactory.java:136)
        at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithMod
uleSupport.java:287)
        at com.sun.enterprise.appclient.Main.main(Main.java:180)
Caused by: java.lang.NullPointerException
        at java.util.zip.ZipFile.getInputStream(ZipFile.java:286)
        at java.util.jar.JarFile.getInputStream(JarFile.java:387)
        at com.sun.enterprise.deployment.util.AnnotationDetector.containsAnnotat
ion(AnnotationDetector.java:139)I have spent so much time identifying the problem... can anyone point the error please?

I'm having the same problem, albeit 18 months later. I am working with a tutorial from apress, which seems very high on Glassfish as a AppServer environment for learning EJB 3.0. I have the same error when I try to run the client application in the Sun Platform 9.0 Application Server's AppClient Module container , "... Error checking for persistence unit annotations in the main class..." and I think it has something to do with the fact that the AppClient is expecting "something" in the MANIFEST.MF file that actually isn't there... ( sigh ). " so close, and yet so far away.... "
--- andyj748

The manifest file "could not find the main class."

The main class file is inside a folder in the created Jar file, but is not in a package. But when I double-click the Jar file, it says it could not find the main class. I am using Windows. I have tried each of the following lines in the manifest, but none are working:
Main-Class: Installer
Main-Class: setupFiles/programFile/Installer
Main-Class: setupFiles\programFile\Installer
Main-Class: setupFiles.programFile.InstallerThe main class is inside the setupFiles/programFile directory. Please Help!
Thanks in advance,
~ Tom

Hi Tom,
The main class file is inside a folder in the created
Jar file, but is not in a package. This is the problem. A JAR file is not an arbitrary ZIP file, where you can arrange directories as you like. The structure of a JAR file always has to follow the package structure. So your Installer class must be on the top level and not in directory setupFiles/programFile.
You might add non-class files in other directores and can access them as resources, but you have to put the class files into their "natural" directories.

JAR: - Could not find main class

I'm sorry, I know this issue has been posted before but I am a bit confused with my situation.
After making a jar on my computer, I run it, and the program loads and runs perfectly.
However, when I try the jar on someone else's computer, it doesn't work, and gives the "could not find main class" message. The other computer has JRE but not JDK, so I don't know if that makes a difference.
Anyways, my main class file is located in a package called hw2, and the whole project is located in a folder called HW2. So my class file is located in something like C:\School\HW2\hw2\Main.class.
My Manifest.txt file is located in the \School\HW2 directory and has the following with a new line at the end:
Main-Class: hw2.Main
At the command prompt, I go to my C:\School\HW2 directory and I type the following to create the jar:
jar cvmf Manifest.txt test.jar hw2\*.class
My jar file has the following contents:
META-INF/
META-INF/MANIFEST.MF
hw2/Bank.class
hw2/GUIInterface.class
hw2/Main.class
Did I write the manifest.txt file correctly? Am I in the right directory when creating the jar file? Am I executing the jar command wrong? How come it works on my computer but not on someone else's?

Are you certain you're executing the jar in the same way on both machines?
For example, are you sure you're not executing the unjarred class files when you run on your local machine?

How can ı run my JavaMail main class in dos mode ?

I develop a program about current account. There are two classes. One class is main class. I can run main class in Sun One Studio but ı can not run in DOS mode. If ı wrote "java Carihesap " on command line appear exception in thread main javax/mail/messaging exception.
Please help me about this problem

ı didnt include any jars within my project. My project occur only two classes. First one main class other one table model class .

Need help with custom event from Main class to an unrelated class.

Hey guys,
I'm new to Flash and not great with OOP. I've made it pretty far with google and lurking, but I've been pulling my hair out on this problem for a day and everything I try throws an error or simply doesn't hit the listener.
I'm trying to get my Main class to send a custom event to an unrelated class called BigIcon. The rest of the code works fine, it's just the addEventListener and dispatchEvent that isn't working.
I've put in the relevant code in below. Let me know if anything else is needed to troubleshoot. Thank you!
Main.as
package
    import flash.display.MovieClip;
    import flash.events.MouseEvent;
    public class Main extends MovieClip
        var iconLayer_mc:MovieClip = new MovieClip();
        public function Main()
            Spin_btn.addEventListener(MouseEvent.CLICK,fl_MouseClickHandler);
            addChildAt(iconLayer_mc,0);
            placeIcons();
        function placeIcons():void
            var i:int;
            var j:int;
            for (i = 0; i < 4; i++)
                for (j = 0; j < 5; j++)
                    //iconString_array has the names of illustrator objects that have been converted to MovieClips and are in the library.
                    var placedIcon_mc:BigIcon = new BigIcon(iconString_array[i][j],i,j);
                    iconLayer_mc.addChild(placedIcon_mc);
        function fl_MouseClickHandler(event:MouseEvent):void
            dispatchEvent(new Event("twitchupEvent",true));
BigIcon.as
package
    import flash.display.MovieClip;
    import flash.events.Event;
    import flash.utils.getDefinitionByName;
    public class BigIcon extends MovieClip
        private var iconImage_str:String;
        private var iconRow_int:int;
        private var iconColumn_int:int;
        public function BigIcon(iconImage_arg:String, iconRow_arg:int, iconColumn_arg:int)
            iconImage_str = iconImage_arg;
            iconRow_int = iconRow_arg;
            iconColumn_int = iconColumn_arg;
            this.addEventListener(Event.ADDED_TO_STAGE, Setup);
        function Setup(e:Event)
            this.y = iconRow_int;
            this.x = iconColumn_int;
            var ClassReference:Class = getDefinitionByName(iconImage_str) as Class;
            var thisIcon_mc:MovieClip = new ClassReference;
            this.addChild(thisIcon_mc);
            addEventListener("twitchupEvent", twitchUp);
        function twitchUp(e:Event)
            this.y += 10;

Ned Murphy wrote:
You should be getting an error for the Main.as class due to missing a line to import the Event class...
import flash.events.Event;
My apologies, I should attempt to compile my example code before I ask for help...
Alright, this compiles, gives me no errors, shows my 'book' and 'flowers' icons perfectly when ran, and prints 'addEventListener' to the output window as expected. I get no errors when I press the button, 'dispatchEvent' is output (good), but the 'twitchUp' function is never called and 'EventTriggered' is never output.
How do I get the 'twitchUp' event to trigger?
Main.as
package
    import flash.display.MovieClip;
    import flash.events.MouseEvent;
    import flash.events.*;
    public class Main extends MovieClip
        var iconLayer_mc:MovieClip = new MovieClip();
        var iconString_array:Array = new Array(2);
        public function Main()
            Spin_btn.addEventListener(MouseEvent.CLICK,fl_MouseClickHandler);
            addChildAt(iconLayer_mc,0);
            buildStringArray();
            placeIcons();
        function buildStringArray():void
            var i:int;
            var j:int;
            for (i = 0; i < 2; i++)
                iconString_array[i] = new Array(3);
                for (j = 0; j < 3; j++)
                    if (Math.random() > .5)
                        //'flowers' is the name of an illustrator object that has been converted to a MovieClip and is in the library
                        iconString_array[i][j] = "flowers";
                    else
                        //'book' is the name of an illustrator object that has been converted to a MovieClip and is in the library
                        iconString_array[i][j] = "book";
        function placeIcons():void
            var i:int;
            var j:int;
            for (i = 0; i < 2; i++)
                for (j = 0; j < 3; j++)
                    //iconString_array has the names of illustrator objects that have been converted to MovieClips and are in the library.
                    var placedIcon_mc:BigIcon = new BigIcon(iconString_array[i][j],i*50,j*50);
                    iconLayer_mc.addChild(placedIcon_mc);
        function fl_MouseClickHandler(event:MouseEvent):void
            dispatchEvent(new Event("twitchupEvent",true));
            trace("dispatchEvent");
BigIcon.as
package
    import flash.display.MovieClip;
    import flash.events.*;
    import flash.utils.getDefinitionByName;
    public class BigIcon extends MovieClip
        private var iconImage_str:String;
        private var iconRow_int:int;
        private var iconColumn_int:int;
        public function BigIcon(iconImage_arg:String, iconRow_arg:int, iconColumn_arg:int)
            iconImage_str = iconImage_arg;
            iconRow_int = iconRow_arg;
            iconColumn_int = iconColumn_arg;
            this.addEventListener(Event.ADDED_TO_STAGE, Setup);
        function Setup(e:Event)
            this.y = iconRow_int;
            this.x = iconColumn_int;
            var ClassReference:Class = getDefinitionByName(iconImage_str) as Class;
            var thisIcon_mc:MovieClip = new ClassReference;
            this.addChild(thisIcon_mc);
            addEventListener("twitchupEvent", twitchUp);
            trace("addEventListener");
        function twitchUp(e:Event)
            this.y += 10;
            trace("EventTriggered");
Output:
[SWF] Untitled-1.swf - 40457 bytes after decompression
addEventListener
addEventListener
addEventListener
addEventListener
addEventListener
addEventListener
dispatchEvent
[UnloadSWF] Untitled-1.swf
Test Movie terminated.

Calling a variable from main class to other class

How do I call a variable that is initialize in the Test.java into Sub.java?
I want to call the a, b, c that I have initialize in Test.java into Sub.java.
import java.util.*;
import java.lang.*;
import java.awt.*;
public class Test{
     public static void main(String args[]){
          int b;
          int c=1;
          int a=11;
          b = c + a;
          System.out.println(+b);
import java.util.*;
import java.lang.*;
import java.awt.*;
public class Sub{
     public void Subtraction(){
          if(a>c)
               b = a-c;
          else if(c>a)
               b = c-a;
          else if(a=c)
               b = a-c;
          System.out.println(+b);
}

This is, and I'm sorry but I don't know how else to say this, a real big mess.
I'll go through some (most/all) of it but honestly....
import java.awt.*;Many will tell you that you should use specific imports and not wildcards to increase ease of reading. I am not so personally picky about this but it would help you.
import java.awt.event.*;
import javax.swing.*;
import java.util.*; Don't import things you never use. It just adds confusion get rid of java.util import
import java.lang.Object.*;Redundant. Remove it.
import java.applet.Applet.*;Unused. get rid of it
public class SUBOK {      Terrible class name. Please use the standard [_Java naming conventions_|http://java.sun.com/docs/codeconv/html/CodeConventions.doc8.html]
public int a = 10;
    public static void main(String[] args) {
         SUBOK runGUI = new SUBOK();
    public SUBOK(){
         JFrame f = new JFrame("Subok");
         f.setSize(150,100);
         f.setVisible(true);
         f.setDefaultCloseOperation(f.EXIT_ON_CLOSE);
         JButton b = new JButton("Sum");
         b.setActionCommand("send");
         b.addActionListener(new Push());
         JPanel p = new JPanel();
         p.add(b);
         f.add(p);
    } Most of that is okay although not great. But I don't think you should be doing anything in Swing at all yet.
private class Push implements ActionListener{
         public void actionPerformed(ActionEvent e){
              if(e.getActionCommand().equals("send")){
                   int a = 12;You are aware that this a has nothing to do with your other a? right? I mean this is a method local variable in a whole other class then the other one.
                       Add i = new Add();
                       i.Add();
    public int aValue(){
         return a;
} Alrighty then...
import java.lang.*;Redundant. Remove You never need to import java.lang.
import java.awt.*;Unused. remove.
import java.util.*;Unused remove.
public class Add {
     SUBOK a = new SUBOK();
     int d = a.aValue(); Aiaiaiai.
public void Add() {
         int b;
         int c = 0;
         b = d+c;
         System.out.println(b);
}First of all do not name a method the same as a class. Second most of this class appears to be based mainly in the realm of wishful thinking. In programming, wishing that something will "just work" without understanding the basics of why and how it works does, pretty much 100% of the time, not end well.
You need to take a number of steps back from this code, get grounded in some fundamentals and then make another attempt. I would highly recommend putting the Swing (or any other GUI) code aside for some time now. Inter-object communication is a fundamental part of OO and thus a fundamental part of Java and this code clearly shows that you don't understand it yet at all.
Start here [_Learning The Java Language_|http://java.sun.com/docs/books/tutorial/java/index.html]
If you have questions as you go through the tutorial do come back and ask them and someone here will be glad to help you. But in order to help you with code you have to be at a point where you understand things like variable scope, the difference between a class and an Object and how, why and what methods can be used to exchange information between two instances.

How to Invoke a main class in a jar file from my project

Hi
I am a new user of the Sun Java Studio enterprise. I would like to know how i can invoke a main method in a jar file associated to the project.
regards
Nisanth

Could you please clarify: do you want to run your project or a project from an independent jar?
In the first case just select Run Project from the project context menu or select a class with main method and click Run File in the class context menu.
Regarding the second case:
- I don't think there is such a feature in the IDE (running third party jars is not an IDE function). Could you explain why you need this?

Using main class's methods from a different class in the same file

Hi guys. Migrating from C++, hit a few snags. Hope someone can furnish a quick word of advice here.
1. The filename is test.java, so test is the main class. This code and the topic title speak for themselves:
class SomeClass
     public void SomeMethod()
          System.out.println(test.SomeOperation());
public class test
     public static void main(String args[])
          SomeClass someObject = new SomeClass();
          someObject.SomeMethod();
     public static String SomeOperation()
          return "SomeThing";
}The code works fine. What I want to know is, is there some way to use test.SomeOperation() from SomeClass without the test.?
2. No sense opening a second topic for this, so second question: Similarly, is there a good way to refer to System.out.println without the System.out.? Like the using keyword in C++.
Thanks.

pfiinit wrote:
The code works fine. What I want to know is, is there some way to use test.SomeOperation() from SomeClass without the test.?Yes you can by using a static import, but I don't recommend it. SomeOperation is a static method of the test class, and it's best to call it that way so you know exactly what your code is doing here.
2. No sense opening a second topic for this, so second question: Similarly, is there a good way to refer to System.out.println without the System.out.? Like the using keyword in C++.Again, you could use static imports, but again, I don't recommend it. Myself, I use Eclipse and set up its template so that when I type sop it automatically spits out System.out.println(). Most decent IDE's have this capability.
Also, you may wish to look up Java naming conventions, since if you abide by them, it will make it easier for others to understand your code.
Much luck and welcome to this forum!

Calling Portal event from ABAP class

Hi Experts,
I need a following clarificatrion, Please help,
1. Is it possible to call a webdynpro method from a normal ABAP class?
2. If no, we need a functionality of a class 'CL_WDR_HTTP_EXT_MIME_HANDLER' having method 'DO_DOMAIN_RELAX_HTML'.
Is there any alternative method which can be used in ABAP having the same functionality.
3. Is there any ways with which we can call portal event from ABAP class?
Thanks,
Shabir

>1. Is it possible to call a webdynpro method from a normal ABAP class?
I wouldn't necessarily recommend this approach. You shouldn't try to trigger events or any of the standard WDDO* methods from outside the WD Component itself. That said, you can pass the object reference (like the WD_COMP_CONTROLLER object reference or the View Object Reference) into methods of normal classes. Be careful if you are finding yourself calling a lot of your added methods from outside WD. This is probably a sign that these methods should be in the Assistance Class or some other Class functioning as a Model Object.
>2. If no, we need a functionality of a class 'CL_WDR_HTTP_EXT_MIME_HANDLER' having method 'DO_DOMAIN_RELAX_HTML'.
Is there any alternative method which can be used in ABAP having the same functionality.
What exactly do you want to do here? Do you just want to get the relaxation script? For what purpose? You should never need to inject the relaxation script into WDA.
>3. Is there any ways with which we can call portal event from ABAP class?
To what purpose. Do you just want to delegate the triggering of the event that is inside WD Component to be called from a class? If so you can pass the portal API object reference into a class from the WD Component. However this only works while running within WD.
How is this class used? Are you running in WD? Are you trying to generate some HTML code that runs in the portal independent of WD?

Forwarding events from my menubar class to main class

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