Michael_D
asked on
Using Java Classes (.jar) from VB.NET/C#
Hi Experts.
I just wonder if it is possible to use Java Classes from VB.Net/C#.
I guess I need to create Wrapper class in J# , compile it into Dll and then refer to this Dll from VB/C# project.
Will this aproach work?
Any information about this issue will be very helpful becouse my knowledge of Java is close to nothing :)
Thanks,
Michael
I just wonder if it is possible to use Java Classes from VB.Net/C#.
I guess I need to create Wrapper class in J# , compile it into Dll and then refer to this Dll from VB/C# project.
Will this aproach work?
Any information about this issue will be very helpful becouse my knowledge of Java is close to nothing :)
Thanks,
Michael
ASKER
The problem is I cannot change Java sources. I have to use it as is . (some API functions to interface with third-part application)
Any idea?
Any idea?
I'm gonna backtrack as found a site that talks about the migration of J++ and vj++ apps to J# or c#.Net (1) and they site a Microsoft developer center designed specifically for automatic migration of those apps (2). There are also shed loads of links on that topic within the MS dev center so have a look. If it is anything like the use of COM components within the .NET world it probably just creates a wrapper for you but i'm not sure.
1) http://www.javaworld.com/javaworld/jw-01-2003/jw-0103-migration.html
2) http://msdn.microsoft.com/vstudio/downloads/tools/jlca/default.aspx
Good Luck
1) http://www.javaworld.com/javaworld/jw-01-2003/jw-0103-migration.html
2) http://msdn.microsoft.com/vstudio/downloads/tools/jlca/default.aspx
Good Luck
P.S.
This talks about creating a J++ wrapper as oposed to converting an entire project.
http://support.microsoft.com/default.aspx?scid=kb;en-us;818429
This talks about creating a J++ wrapper as oposed to converting an entire project.
http://support.microsoft.com/default.aspx?scid=kb;en-us;818429
Easiest way is to use one of the bridge available in Market commerically.
Microsoft recomemnds three options.
1. http://www.jnbridge.com/
2. http://j-integra.intrinsyc.com/
For reference http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnpag/html/jdni_ch04.asp
Microsoft recomemnds three options.
1. http://www.jnbridge.com/
2. http://j-integra.intrinsyc.com/
For reference http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnpag/html/jdni_ch04.asp
ASKER
The_Biochemist:
Your 3rd link is very close to my needs. But as I mentioned before I have no experience with java. Could you explain some issues in this article?
For example it says:
<Quote>
1. Compile the Java-language or COM component by using the Visual J# .NET command-line compiler (Vjc.exe). For example, type the following at a command prompt, and then press ENTER to compile the code:
vjc /target:library JavaSources
</Quote>
I dont have the sources. Is result of this compilation .JAR file that I have?
This article about migration of VJ++ to J#. Is it Ok that my java class was created on Borland enviroment?
Thank you
Your 3rd link is very close to my needs. But as I mentioned before I have no experience with java. Could you explain some issues in this article?
For example it says:
<Quote>
1. Compile the Java-language or COM component by using the Visual J# .NET command-line compiler (Vjc.exe). For example, type the following at a command prompt, and then press ENTER to compile the code:
vjc /target:library JavaSources
</Quote>
I dont have the sources. Is result of this compilation .JAR file that I have?
This article about migration of VJ++ to J#. Is it Ok that my java class was created on Borland enviroment?
Thank you
ASKER CERTIFIED SOLUTION
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ASKER
The_Biochemist:
Sorry for delay, prioreties has been changed :)
I tryed ActiveX Bridge as you recomend in your last post. but unfortunatelly after I select the .jar file and have to choose JavaBean to convert into ActiveX Component. there is NO JavaBeans shown. Is it possible? I repeat I don't have sources so I can't change anything with .jar file
Any ideas?
Sorry for delay, prioreties has been changed :)
I tryed ActiveX Bridge as you recomend in your last post. but unfortunatelly after I select the .jar file and have to choose JavaBean to convert into ActiveX Component. there is NO JavaBeans shown. Is it possible? I repeat I don't have sources so I can't change anything with .jar file
Any ideas?
ASKER
Unfortunately I haven't solved my problem but I guess that my .Jar class doesn't support this "bridge" thing.
Anyway, IMO this thread should be stored in EE database as solved solution
Anyway, IMO this thread should be stored in EE database as solved solution
you may want to wait a while to see if others respond differently but I wouldn't hold your breath unfortunately!