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This sounds like a classpath issue to me. Maybe the classpath is the same when you compile and when you run the java program from the command line, but different within your RPG program. If you have a different version of the class you are calling in the classpath of the JVM for the RPG program that does not include the method in question you might experience the symptoms you are describing. Just a shot in the dark. -----Original Message----- From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Mike Silvers Sent: Wednesday, February 07, 2007 6:21 AM To: RPG programming on the AS400 / iSeries Subject: Problems with RPG Java call I am having a weird problem with an RPG program calling a Java program. When I call the Java program from the RPG, I get an error that was traditionally thrown when the Java program was compiled using a newer JDK than the JRE running the program. this exception is: Cause . . . . . : RPG procedure CRD002RTST in program MSILVERS/CRD002RTST received Java exception "java.lang.NoSuchMethodError: append (Ljava/lang/StringBuffer;)Ljava/lang/StringBuffer;" when calling method "<init>" with signature "()V" in class "com.shipley.ssl.CRD001J". I compiled the Java program on the System i using the JDK 1.4.2. I added a line in the program to run the command JAVA *VERSION to determine the JVM while the program is running -- it is using 1.4.2. Now for the strange part -- if I run the Java program from the command line using RUNJVA, the program runs with no problem. The only time I have a problem is when I run the program from an RPG program. I have stripped out everything in the RPG program to include only the bare minimums. My code is as follows: * Define object D crd001j S O Class(*JAVA: D 'com.shipley.ssl.CRD001J') * Define the Constructors D constr_crd001j PR O ExtProc(*JAVA: D 'com.shipley.ssl.CRD001J': D *CONSTRUCTOR) * D string PR O ExtProc(*JAVA: D 'java.lang.String': D *CONSTRUCTOR) D value 100A CONST VARYING * * string array for main class call..... * D args S O Class(*JAVA:'java.lang.String') D *CONSTRUCTOR) * D string PR O ExtProc(*JAVA: D 'java.lang.String': D *CONSTRUCTOR) D value 100A CONST VARYING * * string array for main class call..... * D args S O Class(*JAVA:'java.lang.String') D DIM(2) * * Define the main method - passing in one parameter D main PR ExtProc(*JAVA: D 'com.shipley.ssl.CRD001J': D 'main') D STATIC D O Class(*JAVA:'java.lang.String') D CONST D DIM(2) * * Define the main method - passing in one parameter D main PR ExtProc(*JAVA: D 'com.shipley.ssl.CRD001J': D 'main') D STATIC D O Class(*JAVA:'java.lang.String') D CONST D DIM(2) D OPTIONS(*VARSIZE) * D setdebug PR ExtProc(*JAVA: D 'com.shipley.ssl.CRD001J': D 'setDebug') D N Value * /Free // change the environment variables before the JVM is created commandstring = 'CHGCURDIR DIR(' + QUOTE + '/creditssl' + QUOTE + ')'; JCLCommand(commandstring); commandstring = 'ADDENVVAR ENVVAR(CLASSPATH) VALUE(' + QUOTE + '.:/creditssl/jt400Native.jar' + QUOTE + ') REPLACE(*YES)'; JCLCommand(commandstring); commandstring = 'JAVA *VERSION'; JCLCommand(commandstring); // constructor..... crd001j = constr_crd001j; // set the debug option setdebug(crd001j:*ON); // call the main class -- it will print out info in the log.... args(1) = string('Test 1'); args(2) = string('Test 2'); main(args); /End-free Any ideas???? ======================================= Mike Silvers, Chief Operating Officer Hainey Business Systems-Division of Affinigent, Inc IT Solutions for Business Performance Cell: (717) 324-5508 Phone: (717) 600-0033 ext 106 Fax: (877) 804-9589 http://www.affinigent.com <http://www.affinigent.com/> http://www.hbs-inc.com <http://www.hbs-inc.com/> AIM: IBMJavaMan Skype: hbs_mike_silvers =======================================
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