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Re: JNI accessing a class that instantiates another class

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From	Florian Weimer <fw@deneb.enyo.de>
Newsgroups	comp.lang.java.programmer
Subject	Re: JNI accessing a class that instantiates another class
Date	Mon, 15 Aug 2011 21:50:54 +0200
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* Danno:

> Thank you for taking the time to reply to my post.  I have attached my
> code below.  I have not used -Xcheck:jni before.  I may not fully
> understand how to use it, but the way I understand it, it is a command
> line argument.  The java program, however, is not being called from a
> command line.  I have a MicroFocus COBOL program that is calling a C++
> dll that starts a JVM and invokes a Java method via JNI.  Is there a
> way to run -Xcheck:jni under that scenario?

The JVM cannot be linked into all processes as a library, at least on
UNIX-like platforms.  I'm not sure if Windows is different in this
regard.  In your case, the JVM does not seem to properly support
exception handling.

There are options that supposedly increase compatibility, see the JVM
documentation.

>         options[0].optionString = "-Djava.class.path=.";

I think you have to put "-Xcheck:jni" here, as an additional option.

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Thread

JNI accessing a class that instantiates another class Danno <danmwall-google@yahoo.com> - 2011-08-15 07:55 -0700
  Re: JNI accessing a class that instantiates another class Florian Weimer <fw@deneb.enyo.de> - 2011-08-15 19:06 +0200
    Re: JNI accessing a class that instantiates another class Danno <danmwall-google@yahoo.com> - 2011-08-15 12:28 -0700
      Re: JNI accessing a class that instantiates another class Florian Weimer <fw@deneb.enyo.de> - 2011-08-15 21:50 +0200
  Re: JNI accessing a class that instantiates another class Roedy Green <see_website@mindprod.com.invalid> - 2011-08-15 15:10 -0700

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