Execute a java console app in a seperate location with class path (cp)

Question

I have a requirement to execute a .jar file in another directory. Following is the code I attempted to perform this task,

        try
        {

            Process p = new Process();
            p.StartInfo.FileName = @"java cp D:\nfc\nfctools-examples-M9\nfctools-examples-M9\src\main\java\nfctools-examples.jar";//, @"-cp nfctools-examples.jar org.nfctools.examples.hce.HceDemo");
            p.StartInfo.Arguments = @"org.nfctools.examples.hce.HceDemo";
            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.UseShellExecute = false;
            p.Start();
            String s = p.StandardOutput.ReadToEnd();
            p.WaitForExit();
            textBox1.Text = textBox1.Text + "data = " + s;
        }
        catch (Exception ex) {
            MessageBox.Show(ex.ToString());
        }

But I get the error The system cannot find the file specified error. I did the task referring to the posts,

I would be really grateful if you experts could assist me in fixing this error. Thank you very much :)

Edit

the path org.nfctools.examples.hce.HceDemo is in D:\nfc\nfctools-examples-M9\nfctools-examples-M9\src\main\java\.

The folder stucture is,

D:\
    nfc\
        nfctools-examples-M9\
            nfctools-examples-M9\
                src\
                    main\
                        java\
                            *nfctools-examples.jar
                            |org\
                            |   nfctools\
                            |       examples\
                            |           hce\
                            |               HceDemo.java

The * represents the .jar file that needs to be executed and the pipe symbol represents the class path cp shown by org.nfctools.examples.hce.HceDemo.

This execution is done in command prompt via java -cp nfctools-examples.jar org.nfctools.examples.hce.HceDemo from within the D:\nfc\nfctools-examples-M9\nfctools-examples-M9\src\main\java\ folder.

My requirement is to perform the execution via C# and obtain the result of the jar file execution to a textbox.

score 1 · Answer 1 · edited May 27 '14 at 08:25

1

The file specified by FileName must exist. Don't add any arguments to this property. Therefore, you have to turn your code into this:

p.StartInfo.FileName = @"java";
p.StartInfo.Arguments = @"cp D:\nfc\nfctools-examples-M9\nfctools-examples-M9\src\main\java\nfctools-examples.jar org.nfctools.examples.hce.HceDemo";

edited May 27 '14 at 08:25

Sayse

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answered May 27 '14 at 08:23

AcidJunkie

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Thank you for the reply sir..but the same error still occurs – Hasitha Shan May 27 '14 at 08:25
Then either specify the full path to the java.exe file or make sure, that the path to the java.exe file is part of your PATH variable – AcidJunkie May 27 '14 at 08:30
The thing is, if I run this command `java -cp D:\nfc\nfctools-examples-M9\nfctools-examples-M9\src\main\java\nfctools-examples.jar org.nfctools.examples.hce.HceDemo` it works fine – Hasitha Shan May 27 '14 at 08:44
Sir I did not get what you said..can you please clarify? – Hasitha Shan May 27 '14 at 12:38

Execute a java console app in a seperate location with class path (cp)

1 Answers1