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  1.  Home
  2. JAVA400-L
  3. February 2011

Accessing array property length through JNI



I've been investigating the way that JNI works and I've been writing Java code and then trying to get the same thing working from RPG.

The play code involves the String split method and the arrayname.length property. This all works in the Java version.

I mistakenly thought that length was an instance variable and wasted a lot of time until a real Java developer pointed out that it was a property of the Java array. The array is a native Java type so of course there is no instance variable. I've been using Tom Snyder's book (Advanced Integrated RPG) as my bible and was using the example code to obtain the Class Id anf Field Id for length. The field id access was failing because (as I now understand) there is no length instance variable.

So the question is - am I able to access the property value through JNI and if so how.

Thanks in Advance



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