Discussions
Categories
- 196.9K All Categories
- 2.2K Data
- 239 Big Data Appliance
- 1.9K Data Science
- 450.3K Databases
- 221.7K General Database Discussions
- 3.8K Java and JavaScript in the Database
- 31 Multilingual Engine
- 550 MySQL Community Space
- 478 NoSQL Database
- 7.9K Oracle Database Express Edition (XE)
- 3K ORDS, SODA & JSON in the Database
- 546 SQLcl
- 4K SQL Developer Data Modeler
- 187K SQL & PL/SQL
- 21.3K SQL Developer
- 295.9K Development
- 17 Developer Projects
- 138 Programming Languages
- 292.6K Development Tools
- 107 DevOps
- 3.1K QA/Testing
- 646K Java
- 28 Java Learning Subscription
- 37K Database Connectivity
- 155 Java Community Process
- 105 Java 25
- 22.1K Java APIs
- 138.1K Java Development Tools
- 165.3K Java EE (Java Enterprise Edition)
- 18 Java Essentials
- 160 Java 8 Questions
- 86K Java Programming
- 80 Java Puzzle Ball
- 65.1K New To Java
- 1.7K Training / Learning / Certification
- 13.8K Java HotSpot Virtual Machine
- 94.3K Java SE
- 13.8K Java Security
- 204 Java User Groups
- 24 JavaScript - Nashorn
- Programs
- 442 LiveLabs
- 38 Workshops
- 10.2K Software
- 6.7K Berkeley DB Family
- 3.5K JHeadstart
- 5.7K Other Languages
- 2.3K Chinese
- 171 Deutsche Oracle Community
- 1.1K Español
- 1.9K Japanese
- 232 Portuguese
How to use Jace to create 2D arrays

Hi all,
I'm using Jace 1.1.1 to generate proxies for C++ to call back into Java. I've generated a few proxies that require 2D arrays of float for some of the method parameters, however, I can't seem to create a 2D array of float using JArray. I saw Toby Reyelts example (Returning a Matrix from a C++ native method, possible?), but it crashes my system. Below is the example I'm using:
typedef JArray< JArray<JFloat> > FloatMatrix;
typedef JArray< JFloat > FloatRow
// Create a 10x5 matrix
const int rows = 10;
const int cols = 5;
FloatMatrix matrix( rows );
for ( int i = 0; i < rows; ++i ) {
matrix[ i ] = FloatRow( cols ); // <----Crash here
}
// Set some values
matrix[ 0 ][ 4 ] = 52.2;
matrix[ 9 ][ 2 ] = 11.5;
// Read some values
int a = matrix[ 1 ][ 3 ];
int b = matrix[ 6 ][ 2 ];
Any help would be greatly appreciated.
Kind regards,
Kyle