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Problem calling GetMethodID for constructor

 
Greenhorn
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Hi there,

I am new to JNI and I try to call Java from a cobol program with JNI. The jvm is loaded properly and the FindClass works well.

If I call GetMethodID with the method-name <init> and the signature ()V I am getting the following error message:





Consists in specifying the method signature (for the constructor) a problem?

Many thanks in advance

Lys.
 
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Apparently there is no constructor without parameters.
 
Lyr Lysander
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The converning class owns definitely a parameterless constructor.



My first thought was, that there is something wrong with the used signature. I'm confused because of the blanks between <init> and ()V.

However, I used UFT8-Strings, which are zero-terminated, for the method name and the signature. 6 signs for the method anme and 3 signs for the signature.

The error message is confusing.
 
Rob Spoor
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You provide two different strings to find a method / constructor - one for the name, one for the parameters and return type.

Can you please show us some of your JNI code? Because either there's something wrong with your arguments (possibly not terminated correctly), or it's using the wrong class.
 
Lyr Lysander
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Here is the used code. As mentioned earlier, it is ugly Cobol :

 
Rob Spoor
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That's so ugly, I can't even read it!

But seriously, I just can't read Cobol. Perhaps someone else around can.
 
Don't get me started about those stupid light bulbs.
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