Call Java method from .Net

Question

I've to call a java method from a C# .Net concole application.

The solution at the following link

Process myProcess = new Process();
Process.StartInfo.UseShellExecute = false;
myProcess.StartInfo.FileName = "java";
myProcess.StartInfo.Arguments = "-jar D:\\myjava.jar";
myProcess.Start();e

doesn't allow an usefull return value (e.g. a string object) from the jar file to the .Net console app.

Another approach could be use IKVM but the developments are over and it seems to be to old to be used in an stable enterprise solution.

How can I call a java method and geta string as result value?

LeftyX · Accepted Answer · 2023-11-27 16:15:55Z

3

IKVM is pretty heavyweight (not to mention discontinued) so if you can avoid it then it might be easier.

If the Java program can produce its output on STDOUT (i.e. write to the console) then you could read that output via your Process object.

For example:

Process myProcess = new Process();
myProcess.StartInfo.UseShellExecute = false;
myProcess.StartInfo.FileName = "java";
myProcess.StartInfo.Arguments = "-jar D:\\myjava.jar";
myProcess.StartInfo.RedirectStandardOutput = true;
myProcess.Start();
var output = myProcess.StandardOutput.ReadToEnd();

You may need to experiment with setting other properties on your ProcessStartInfo.

edited Nov 27, 2023 at 16:15

LeftyX

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answered Mar 16, 2019 at 14:49

Drew Noakes

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1 Comment

David Thielen Over a year ago

IKVM is not discontinued. We (Windward Studios) have taken over support for it.

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