Base Class vs Class in the linkage panel
I have 2 dozen movie clips in the libarary that are all the same structure, but with different content, and I wanted to write a single class that would work for all of them. Popping this in as the base class worked great until I wanted to pass in some arguments to the constructor. Suddenly, it seems I have to write a "shell" class for each asset that contains nothing but super(arg1,arg2) in its constructor (all 24 of them - ugh!). This ends up being really clunky. Is there any way around it?
Also - in discussing this with a colleague, an issue came up about the exact relationship between the items in the Class and Base Class fields in the linakge panel for a library asset. What exactly is therelationship? Does the class always extend the base class, or is there something else going on?
undo whatever you did that caused that problem. you probably assigned a class name that matched one of your base classes.
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I am rather new to LabVIEW, have only been using it for about 1.5 weeks as of this post, which means I may be missing something rather obvious due to ignorance, but is there any way to have my front panel change as my case changes due to user selection of a certain case via the front panel?
The goal of the program is to make a simple layout for a user that is using the digital multimeter that the proposed code is designed for and I don't want tons of numeric controllers and such clogging up the screen space that don't work with the function the user is using to measure with.
Thanks in advanced.
Solved!
Go to Solution.Check out the property node for the controls
Visible Property
Short Name: Visible
Requires: Base Package
Class: Control Properties
Displays the front panel control.
This property is similar to the Show Control and Hide Control options on the shortcut menu of a control.
Also look at the TAB control to control which controls are available to your user.
Omar -
Stock report on the basis of valcation class
hi expert
My abaper have create a stock report on the valuation class the report contain opening balance, inward stock, outward stock, clossing stock.i have done with the report the problem which i am getting in some of the valuation class i am getting the wrong all the figure
Please guide me for to fetch proper field and table.
regard
nabilHi jayant
i dont want MB5W because its analysis reprot. i want to get report on the basis of monthly, in which valuation class- opening balance, inward movement (value), outward movement (value), clossing balance.
regard
nabil -
AS3: How to create one base class for classes loaded in multiple swfs?
Our application have 3 different modules and all use
fscommand and ExternalInterface alot. Now the problem is we are
combining all those modules, but they all will reside in different
swfs. Is there any way that they extend to same base class and its
static members have only one instance accessible by all
three?Hi,
You can achieve this via Workshop 9.2 by using the exported Ant script for your project as follows:
-Ensure that all Jars needed to resolve com.bea.p13n.property.EntityPropertyManager (this particular class is found in weblogic92/common/p13n/lib/p13n_ejb.jar) and all referenced classes are added to the Java build path for your WebLogic EJB project (Properties->Java Build Path->Libraries)
-Export the "Workshop Ant Script" for your WebLogic EJB project (File->Export->Workshop Ant Script); this will generate a "build.xml" Ant script under your project root directory.
-Edit this default build script as follows: in the call to the "ejbgen" task within the "build" target, add the attribute: propertyFile="ejbgen.properties"
-Create a file "ejbgen.properties" under the root of your WebLogic EJB project and add the following entry:
YourSessionBeanClassName.remote.baseClass=com.bea.p13n.property.EntityPropertyManager
-Add a "<path refid="java.classpath"/>" within the "<classpath>" for the "java" task element that calls "weblogic.ejbc" (this will ensure that the p13n classes are resolved by EJBC)
Follow the instructions for executing the Ant build script found here: http://edocs.bea.com/workshop/docs92/ws_platform/ideuserguide/conUseCustomAntBuild.html
For more information on the EJBGen property file support, see: http://e-docs.bea.com/wls/docs92/ejb/EJBGen_reference.html -
Hi all,
I have
class Base {
int a;
class Derived{
int b;
now if i do
Base X = new Base();
Derived D = new Derived();
It Doesn't allow me to do D=X
But it does allow me to do X=D.
whats the reason behind it. And what actually happens when i do X=D , does the copy constructor gets called ?
ThanxManthana wrote:
Hi, u said
the value of X becomes the reference to the instance of Derived that you created when you called "new Derived()".
So now i can access attributes of derived class from the reference X right X.b
But i cant do X.b
Why?Please spell out words like "you". It makes things easier to read. :)
With Derived extending Base, you could say:
X = D;
X.a = 5;Because the compiler and runtime see X as a reference to a Base object, you can only access variables/methods defined in Base. Since X is declared as being a reference to Base, you always know that 'a' is defined. 'b' wouldn't be defined for X if you said:
X = new Base();
X.b = 52;So, in order to access the b, you'd have to access it with something declared as a reference to Derived, such as 'D':
D.b = 10;You could say:
X = D; // Line 1
Derived d2 = (Derived)X;
d2.b = 10;But, then you'll get a ClassCastException if X is only referring to a Base object [e.g., if Line 1 was "X = new Base();"], not to a Derived object. -
Which classes are inherent in the Java language?
For some reason I just thought of the question this past 2AM.
What classes are significant to the Java compiler? The list I thought of was:
Object -- implements wait() and synchronized
String -- all those convenience idioms we couldn't live without
StringBuilder -- for String operators like "a" + var
Integer, Long, Short, Char -- also for String operators like int i; String x = "abc" + i;
Throwable -- needed for catch clause
RuntimeException -- needed for implicit throw
How about the following? Does javac need to know about these? Or are they all handled by the runtime base classes?
Class
Constructor
ThreadAlanObject wrote:
jverd wrote:
ErrorI've never run into this class before, but wouldn't the JVM and not the compiler be dealing with this?> I don't think it has to know about StringBuilder or StringBuffer, as the JLS does not require their use for string concatenation with +. It's just that most implementations do it that way.Good point.
I don't doubt that in the creation of Java there were long discussions about this. They could have done away with the String-awareness of the language by forcing the use of direct methods but the usability issue won the day.
Also, are there now classes implied in the use of the for-each statement (Collection?) and in enums (Enumeration?)That would be Iterable, a shiny new abstraction. And, by extension, Iterator. Both them and enums, though, are tricks of the compiler, syntactic sugar. There's no new bytecode for those mechanisms (as yet) -
Error while calling a super class public method in the subclass constructor
Hi ,
I have code like this:
CLASS gacl_applog DEFINITION ABSTRACT.
PUBLIC SECTION.
METHODS:
create_new_a
IMPORTING pf_obj TYPE balobj_d
pf_subobj TYPE balsubobj
pf_extnumber TYPE string
EXPORTING pfx_log_hndl TYPE balloghndl
EXCEPTIONS error
ENDCLASS.
CLASS gacl_applog IMPLEMENTATION.
METHOD create_new_a.
DATA: ls_log TYPE bal_s_log.
Header aufsetzen
MOVE pf_extnumber TO ls_log-extnumber.
ls_log-object = pf_obj.
ls_log-subobject = pf_subobj.
ls_log-aluser = sy-uname.
ls_log-alprog = sy-repid.
ls_log-aldate = sy-datum.
ls_log-altime = sy-uzeit.
ls_log-aldate_del = ls_log-aldate + 1.
CALL FUNCTION 'BAL_LOG_CREATE'
EXPORTING
i_s_log = ls_log
IMPORTING
e_log_handle = pfx_log_hndl
EXCEPTIONS
OTHERS = 1.
IF ( sy-subrc NE 0 ).
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4
RAISING error.
ENDIF.
ENDMETHOD.
CLASS gcl_applog_temp DEFINITION INHERITING FROM gacl_applog.
PUBLIC SECTION.
DATA: log_hndl TYPE balloghndl READ-ONLY
, t_log_hndl TYPE bal_t_logh READ-ONLY
METHODS: constructor
IMPORTING pf_obj TYPE balobj_d
pf_subobj TYPE balsubobj
pf_extnumber TYPE string
EXCEPTIONS error
, msg_add REDEFINITION
, display REDEFINITION
ENDCLASS.
CLASS gcl_applog_temp IMPLEMENTATION.
METHOD constructor.
CALL METHOD create_new_a
EXPORTING pf_obj = pf_obj
pf_subobj = pf_subobj
pf_extnumber = pf_extnumber
IMPORTING pfx_log_hndl = log_hndl.
IF ( sy-subrc NE 0 ).
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4
RAISING error.
ENDIF.
ENDMETHOD.
A public method of Super class has been called from the constructor of the sub class. we are getting the syntax error :
' In the constructor method, you can only access instance attributes, instance methods, or "ME" after calling the constructor of the superclass '
Can you please suggest how to change the code with out affecting the functioanlity.
Thank you ,
Lakshmi.Hi,
Call that method by instance of Subclass. OR
SUPER-->method.
Read very useful document
Constructors
Constructors are special methods that cannot be called using CALL METHOD. Instead, they are called automatically by the system to set the starting state of a new object or class. There are two types of constructors - instance constructors and static constructors. Constructors are methods with a predefined name. To use them, you must declare them explicitly in the class.
The instance constructor of a class is the predefined instance method CONSTRUCTOR. You declare it in the public section as follows:
METHODS CONSTRUCTOR
IMPORTING.. [VALUE(]<ii>[)] TYPE type [OPTIONAL]..
EXCEPTIONS.. <ei>.
and implement it in the implementation section like any other method. The system calls the instance constructor once for each instance of the class, directly after the object has been created in the CREATE OBJECT statement. You can pass the input parameters of the instance constructor and handle its exceptions using the EXPORTING and EXCEPTIONS additions in the CREATE OBJECT statement.
The static constructor of a class is the predefined static method CLASS_CONSTRUCTOR. You declare it in the public section as follows:
CLASS-METHODS CLASS_CONSTRUCTOR.
and implement it in the implementation section like any other method. The static constructor has no parameters. The system calls the static constructor once for each class, before the class is accessed for the first time. The static constructor cannot therefore access the components of its own class.
Pls. reward if useful.... -
What is the field and Table for "Batch Class" and "Class Type" in QM.
Hi All,
What is the field and Table for "Batch Class" and "Class Type" in QM.
Thanks,Hi,
For batch class the class type value is '023' . This you can find from KLAH table and the fileld for class type is KLART..
And also all the data related to batch class are found in tables INOB, KLAH,KKSK and for the characeteristics of batch materials you can refer AUSP table.
In INOB table, for batch class, you need to give 023 in KLART field and value MCH1 in OBTAB filed.
Please check this and let me know if this you need any more details? -
ChaRM class java.io.IOException:The file does not exist on the filesystem
Hi All,
We are implementing ChaRM with Portal. While deploying we are running into following issue.
Deployable-Id:/usr/sap/trans/data/GPSK90001B/sktp14_20100806_095633.epa
Returncode:'12'
class java.io.IOException:The file (/usr/sap/trans/data/GPSK90001B/sktp14_20100806_095633.epa) does not exist on the filesystem.
Any suggestion.
Regards,
SmitaWe resolved this issue by sharing the trans file across SolMan and Portal system.
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How to write a class loader to solve the class confliction in rt.jar?
Hello guys:
The weblogic.jar has the javax.management.*, it is conflict with rt.jar's
I want to use JMX 1.0 to communicate with weblogic 8.1. The client should be run in the Java 1.5
It throw
java.io.InvalidClassException: javax.management.ObjectName; local class incompatible:
stream classdesc serialVersionUID = -5467795090068647408, local class serialVersionUID = 1081892073854801359
java.io.InvalidClassException: javax.management.ObjectName; local class incompatible:
stream classdesc serialVersionUID = -5467795090068647408, local class serialVersionUID = 1081892073854801359I know the reason is java 1.5 has JMX 1.2 in it.
So how can I program a class loader to load the weblogic.jar classes in? I have tried a lot of code, but failed.
Is there any sample here?
I want to use the JMX 1.0 in weblogic.jar at jdk1.5 run time
Thanks a lot,
QiangHello guys:
The weblogic.jar has the javax.management.*, it is conflict with rt.jar's
I want to use JMX 1.0 to communicate with weblogic 8.1. The client should be run in the Java 1.5
It throw
java.io.InvalidClassException: javax.management.ObjectName; local class incompatible:
stream classdesc serialVersionUID = -5467795090068647408, local class serialVersionUID = 1081892073854801359
java.io.InvalidClassException: javax.management.ObjectName; local class incompatible:
stream classdesc serialVersionUID = -5467795090068647408, local class serialVersionUID = 1081892073854801359I know the reason is java 1.5 has JMX 1.2 in it.
So how can I program a class loader to load the weblogic.jar classes in? I have tried a lot of code, but failed.
Is there any sample here?
I want to use the JMX 1.0 in weblogic.jar at jdk1.5 run time
Thanks a lot,
Qiang -
Calling a method of one class from another withing the same package
hi,
i've some problem in calling a method of one class from another class within the same package.
for eg. if in Package mypack. i'm having 2 files, f1 and f2. i would like to call a method of f2 from f1(f1 is a servlet) . i donno exactly how to instantiate the object for f2. can anybody please help me in this regard.
Thank u in advance.
Regards,
FazliThis is what my exact problem.
i've created a bean (DataBean) to access the database. i'm having a servlet program (ShopBook). now to check some details over there in the database from the servlet i'm in need to use a method in the DataBean.
both ShopBook.java and DataBean.java lies in the package shoppack.
in ShopBook i tried to instantiate the object to DataBean as
DataBean db = new DataBean();
it shows the compiler error, unable to resolve symbol DataBean.
note:
first i compiled DataBean.java, it got compiled perfectly and the class file resides inside the shoppack.
when i'm trying to compile the ShopBook its telling this error.
hope i'm clear in explaining my problem. can u please help me?
thank u in advance.
regards,
Fazli -
Hello, someone stole my sons IPhone today in his gym class. I have the "find my iphone app" on my phone BUT he is not a listed device. I went into his itunes account and downloaded the "find my iphone app" app under his account. When I try to log into "find my iphone" under his name on my device I get an error msg involving icloud......he is MUCH better at this stuff then I am BUT he is in school and now I need to figure out how to use the "find my iphone app". PLEASE HELP
It doesn't matter whick account you use to download the app.
You have to sign into the app (or iCloud.com from a web browser on your computer) with his Apple ID & password.
Find My iPhone will only work if it was enabled in the iCloud settings on the device and it was powered on with a connection to the internet -
I am new to ABAP. I tried creating abstract class and found that class builder allows development of abstract final class. What is the use of such class in ABAP?
Hi,
Does not compile:
This one do:
Inheritance:
Regards. -
I am trying to use my IPAD to video students in my conducting class, then email them the video for self evaluation. However, many of the clips are too long to send. Is there a way I can compress the clips and still send them via email so they can open and them using Quicken?
MuzakmnIt depends on the clips' content, their current format, and how much you would need to compress them, but in most cases and with most email systems, it's difficult to impossible to compress a clip enough to be able to get it through the attachment size limits of most email providers and still have the video be comprehensible. You'll probably need to find a web site or other method where you could post the videos for download by the students.
You can try compression and trimming, though, and see if you can get the video small enough to email. An attachment often has to be 3MB or less to go through, though it depends entirely on the email systems on both ends. If you look to the right under "more like this" you'll find similar threads on the subject.
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Can I use multiple p class="logos" tag with the same name within the same html page?
I was told not to use <div class> tags too many times. I was using them for text, images, to clear floats, I basically built my website using multiple <div class> tags. So if I can't use multiple <div class> tags could I use <p class> tags multiple times in the same html page?
I have a string of logos at the bottom of my webpage which will all be using the same css characteristics for all logos. Would this be the proper way to write the code:
HTML
<p class="logos">Logo1<a href="...></a></p>
<p class="logos">Logo2<a href="...></a></p>
<p class="logos">Logo3<a href="...></a></p>
<p class="logos">Logo4<a href="...></a></p>
<p class="logos">Logo5<a href="...></a></p>
<p class="logos">Logo6<a href="...></a></p>
CSS
.logos {
margin-left:10px;
Here's my website: http://www.darbymanufacturing.com/test_website/index.html - this is the website built with all div class tags
I restarted the website in order to write the code properly so that I don't come to errors when uploading on the server like I am having with the website link above.Instead of writing something like this -
<p class="logos">Logo1<a href="...></a></p>
<p class="logos">Logo2<a href="...></a></p>
<p class="logos">Logo3<a href="...></a></p>
<p class="logos">Logo4<a href="...></a></p>
<p class="logos">Logo5<a href="...></a></p>
<p class="logos">Logo6<a href="...></a></p>
Why not have something like this -
<div id="logodiv">
<p>Logo1<a href="...></a></p>
<p>Logo2<a href="...></a></p>
<p>Logo3<a href="...></a></p>
<p>Logo4<a href="...></a></p>
<p>Logo5<a href="...></a></p>
<p>Logo6<a href="...></a></p>
</div>
with CSS like this -
#logodiv p { ... }
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