Question

I am trying to invoke a simple Hello World Cobol program through java. The java code is in IFS file structure and the cobol object is parked in a library.
I am facing multiple problems:

1. The error stream returned by process execution is not in readable format.
2. I am getting error stream result even if the termination of cobol code returns 0.
3. I cannot see the cobol output result in the inputstream of the process.(May be I can solve this if i understand the error stream )

The cobol code works when invoke independently.
I have tried encoding UTF8,UTF16, Cp943 and default.
When I use UTF8,UTF16 I get MalformedInputException, else a garbage value.

Java code:(compiled @ AS 400 itself -java 1.5)

    import java.io.*;

    public class CallCLPgm
    {
       public static void main(String[] args)
       {
          try
          {
          Process theProcess =  Runtime.getRuntime().exec("system CALL PROG6");
          //error stream
            BufferedReader inStream1 = new BufferedReader(new InputStreamReader
                     (theProcess.getErrorStream(),"UTF8"));
             System.out.println(inStream1.readLine());
            inStream1.close();
          //input stream   
             BufferedReader inStream = new BufferedReader(new InputStreamReader
                     (theProcess.getInputStream()));
             System.out.println(inStream.readLine());
             inStream.close();


             System.out.println("termination : "+theProcess.waitFor());

 

 //Cobol code
      PROCEDURE DIVISION.        
      PROGRAM-BEGIN.     
          DISPLAY "Hello World".   
          STOP RUN.  

Answer 1

I should have focused on IBM encoding format
http://publib.boulder.ibm.com/html/as400/v4r5/ic2924/index.htm?info/java/rzaha/fileenc.htm

I used “Cp037” for USA instead of UTF8 and other format.

BufferedReader inStream1 = new BufferedReader(new InputStreamReader
(theProcess.getErrorStream(),”Cp037″));