Calling Java Class In Vb?
May 18, 2009
In order to call a java class in vb, I found the following procedure and I tried.
(1) create a java class (eg: MyTest .java)
as
public class MyTest
{ public int myfunction(int value1, int value2) { return value1+value2; }
(2) compile to get a MyTest.class
(3)register Mytest.class using javareg.exe file from Microsoft SDK for Java using javareg /register /class:MyTest /progid:MyTest and see a MessageBox displayed with Succesfull register Class message
(4) copy MyTest.class to C:WinntJavaTrustlib
(5) open a New Project on Visual Basic. And paste this brief code on the Form Load event for example and run it. Set x = CreateObject("MyTest") MsgBox x.myfunction(1, 1)
I did all the above steps but when I run the vb program (Step 5), I get the error message "Cannot create ActiveX component". Unhandled Exception message.
I am using Java 1.5 and Visual Studio 2008.
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Mar 15, 2012
I have a VB program that writes a batch file to allow me to run a line of the following format:java <my class file> [options]I then run the batch file using the Shell() routine in VB.When I do this it says it cannot find <my class file>. However if I run the same batch file from a dos prompt it works.why it works in a dos prompt but not in the Shell function?
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Aug 9, 2011
know about below queries,
1) How to Call Java base API's Through VB.Net 3.5
2) Is it a feasible approach to call Java API's through VB.Net as these 2 are different platform?
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Mar 29, 2009
[URL] The jist of the problem is in fact that in the weka.classifiers.trees namespace you have the following members:
namespace weka.classifiers.trees.j48
and
public class J48 : weka.classifiers.Classifier (Member of weka.classifiers.trees)
Lamentably VB .NET in VS 2008 does not seem to be smart enough to distinguish betweem the two (which is odd, because there is no such problem in VS 2003, or in C# in VS 2008) because of it's lack of case sensitivity. Or possibly because of the fact that ikvmc emits an assembly compiled for the 1.1 run time... I'm not sure. I'm also not quite sure how you would resolve this particular issue and given the time sensitivity of this project I do not have the time to learn C# or Java to an extensive degree.
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Jan 29, 2011
I have a class in java "Main.class", wrote and stored in %TEMP%. When executing the class through VB.Net Shell, eg:
Shell("cmd.exe /k java %TEMP%Main.class")
Also when trying to execute manually through CMD: "java %TEMP%Main.class", I am returned with:
Exception in thread "main" java.lang.NoClassDefFoundError: C:UsersBenAppData
LocalTempMain/class
Caused by: java.lang.ClassNotFoundException: C:UsersBenAppDataLocalTempMai
n.class
[code]....
However, when I execute Main.class manually through compile.bat - the class runs fine. What is the reasoning for this?
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Mar 24, 2010
I am working on a Java project and I am having some difficulties with importing a .class file. Unfortunately I do not have access to the source code of the file?
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May 13, 2011
Example:
Two files - TestClass.vb, myForm.vb
TestClass.vb looks as follows:
Imports System.Threading
Public Class TestClass
Private myClassThread As New Thread(AddressOf StartMyClassThread)
[code]....
The result:Application runs, no errors or exceptions.Displayed is the listbox and the Start button.I press the start button and a msgbox says "Not Invoked" as expected and upon clicking OK to that msgbox "Start Button Pressed" is added to the Output listbox control.Immediately following that the msgbox pops up again and says "Not Invoked". I was expecting "Invoked" as a separate thread is trying to use the Output listbox control.Of course this results in the Output.Items.Add being attempted which results in no visible result as the thread is not allowed to directly update the UI control.
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Jun 21, 2010
In one of my vb.net 2008 application i have called a java class file through batch process which creates txt file and jar file and put in app path folder.[code]...
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Apr 13, 2012
I have been asked to create a project in vb.net which needs to integrate a java class created by Apple (Autoingestion.class) to pull sales records and so on.I found out a couple of questions here on stackoverflow but none of the answers given worked for me when trying to integrate this java class in my .net application.For example this question seemed to be what I really needed but when trying to compile this java class (I decompiled it first using Java Decompiler), it generally throws some errors.All I need is to use this class in my application to invoke a method.Does anyone know how to pull this out without much ninja-ing?
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Oct 29, 2009
I wrote a Java class that parses a bpel text file and then returns a count of the number of occurences of certain words. I wanted to convert it to VB2008 Forms application, so that its results are displayed in a TextBox and not on the console. The problem is that VB2008 lacks Scanner and StringTokenizer classes, which are in my current Java class. Am not sure how to get the same functionality (or better) in VB2008. Can someone out there help to convert this class.
[Code]...
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Apr 24, 2012
I have quite a long java class and I need it displayed within a text box, with a scroll bar, in a powerpoint presentation. I have only just found out that powerpoint can use vb to create macros. I would want it displayed in the powerpoint presentation correctly formatted etc. [Code]
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Jan 28, 2010
Our VB.NET project is using a Java library from Vivid Solutoins [URL}... to do Geometry calculations.[URL}...
What I can't figure out are the units specifically for the Buffer property, or any other distance for that matter. My program is dealing with Nautical Miles, and the documentation gives no indication if the units are degrees, miles, Nautical Miles, Kilometers, inches, etc.
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Mar 12, 2011
Under Visual Basic 2010, I am trying to define a specific instance of a static method that was created as a Java class. I have a vendor supplied dll added in as a reference.[code]...
But, I can't seem to define a specific instance of this method. Using "IntegrationMethod.getIntegrationMode()"always returns a value of zero.
There doesn't appear to be any way to "setIntegrationMode" to a specific value.
The documentatoin for this Class as provided by the vendor are shown below.
When I asked the vendor for assistance, their response was: "
Our javadocs for the IntegrationMethod class show that we provide three predefined instances of the IntegrationMethod class[code]...
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Dec 12, 2011
I've created an add-in for outlook 2010.I have a ribbon that has a button on it. When you click that button, I want it to call a procedure in the ThisAddIn.vb.There are two files: ThisAddin.vb and Ribbon.vb.I've tried several things to no avail. I've also set all the procedures to public.
Call Testing123()
Call ThisAddIn.Testing123()
Etc
How do I properly call this procedure?
****Ribbon1.vb****
Imports Microsoft.Office.Tools.Ribbon
Public Class MyOutlookTab[code].....
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Nov 23, 2010
I have a code but cant get it to work. I have a .vb site with a namespace and a Class and a Sub.Then on my index.aspx site i cant to call this sub The 2 sites is in the root of my project, and the name of the project is CalendarWeek
My WeekController.vb is
Imports System
Imports System.Web.UI.WebControls.Calendar
Imports System.Globalization
[Code]...
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Aug 5, 2010
<div sizcache="0" sizset="0">
i am having 2 class files a.vb and b.vb i have some public shared function in a.vb which i need to call in b.vb i have called it inthis way like the way i has called in normal .aspx pages in b.vb page i called the function of a.vb as
a.funcpwd("filedname") error BC30451: Name 'a' is not declared.
</div>
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Mar 12, 2011
If I have two classes, one and two:
Public Class One
End Class
Public Class Two
[Code].....
Is there any way that a sub in class one can call the sub in class two?
In other words, I have a main class that instantiates objects from other classes, but I want one of those other classes to be able to 'talk back' to the main class without being polled.
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Feb 24, 2011
I want to call the class radiostate by a button click on a form..Is this possible.. or should I rephrase it to say I want to call a function inside a class... either way im stuck.
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Jun 1, 2009
I have been given an ASP.Net assignment at work because I had taken a few courses a couple of years ago. Currently, there are no ASP.Net programmers for me to ask here and I have searched several places (including Pro ASP Net book) to find a solution but have come up empty handed.
I have a class named spErrors which takes the values passed to it. Values passed include the offending page,function/sub, and other values and stores them in property values, then calls Response.Redirect("Errors.aspx") from the page's code behind page. In Errors.aspx, the values of the error/exception trapped in the Catch statement are displayed. This works fine from a web form. My question is, how do I call a web page from a class module?
Each class module has the ErrorHandler() procedure that passes these values to the class object. In the class, there is a Write Only property named Redirect and a method called Execute() which is used to display the error page if the error occurs in another class module. Since Response.Redirect() does not work in a class module, what namespace is needed in order for this to work?
Here is the code I'm using.
In the Catch block.
Catch ex As Exception
Err.Description = ex.Message
ErrorHandler(Err, "function name")
[code]....
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Jun 3, 2011
i have cracked my brain to figure out on how to use if else statements in form1 to call button.click from another class.
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Jul 18, 2012
essentially I need to create a class that houses the methods and then call the methods in the form but I can't seem to find out what the right code is to call it. I think there may be an issue with the conversion from a double to a string.
This is what I have for the Class
Public Class Aircraft
Dim Names() As String = {"A-747", "A-737", "C-150", "D-240"}
Dim TakeOffVelocity() As Double = {250, 264, 270, 240}
Dim Acceleration() As Double = {33.5, 44.2, 37.1, 51.9}
[code]...
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Mar 21, 2012
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Apr 22, 2010
Lets say I have a class like this in class1.vb:
Public Class my_class
Public Sub my_sub()
Dim myvar as String
myvar = 10
Session("myvar") = myvar
End Sub
End Class
Then I have a ASP.NET page with a code-behind file, default.aspx and default.aspx.vb and I want to call my_class. I'm doing the following, but it doesn't work:
[Code]...
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Jul 19, 2010
I have to implement a COM class with VB.NET. An object of this class has then to be created from a VB6 DLL. The code for the COM dll is very simple:
Code:
Public Class AdapterWrapper
Implements SchemaCompInterfaces.IEFAdapter
#Region "COM-GUIDs"
[code]....
Now when I'm running this code, I'm getting the Run-time error '13' Type mismatch in the CreateObject line. Late binding with
Code:
Dim adapter as Object
seems to work for my test code, but is not a solution for me, because I can't change the proprietary VB6 code where the COM object is created. So somehow the interface "SchemaCompInterfaces.IEFAdapter" is not known... :sigh: In the project properties I checked the flag for registration with COM-Interop. Perhaps something to do with the ClassInterface?
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Aug 29, 2011
How can I access the values stored in a session object with a class in asp.net?
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May 4, 2012
I want to see if there is a way to do this... I'm Using vs2010 with the WP7 SDK. (VB.NET)
I am declaring this in the global scope.
public objGame as object then say i have classes: Game1 and Game2 for the sake of the example we'll just say both classes have an Update() function
I want to set objGame = Game1 (or Game2) and then be able to call objGame.Update()
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Nov 21, 2009
The project requires a form that has textboxes for a students name and the amount of books they have read, and a label where the points they have earned for their reading is displayed. Also a seperate form with About information and yet another seperate form for summary information.
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Jan 25, 2010
I have the following class in a .NET class library:
Code:
Public Class JasonTest
Sub New()
End Sub
[Code]....
The .AddNumbers call works fine, but the AddStrings call yields the error 'Object doesn't support this property or method'.
Is there any way to call a shared method from .NET in VB6? I was unable to find any documentation on this.
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