//
//###################################################################
//                   Class TempCalcJava
//###################################################################
//
//   
//  Creator               : Chris Anderson
//  (C) UCLA 1997
//
//###################################################################
//
public class TempCalcJava implements Runnable
{
//
//  Problem parameters
//
    double diffusivity;
    double a; double b;
    double c; double d;
//
//  Runtime parameters
//
    int  m; int n;

    int       nSteps;
    int       nOut;
    double    dt;

    double [] Tarray;
    double [] workArray;
//
//  Graphics object (for output)
//
    ColorContourPlot contourPlot; 

public TempCalcJava()
{
    diffusivity = 0.0;

    a = 0.0;  b= 0.0;
    c = 0.0;  d= 0.0;

    n           = 0;
    nSteps      = 0;
    nOut        = 0;
    dt          = 0.0;
    Tarray      = null;
    workArray   = null;
    contourPlot = null;
}

public void run()
{
//
//  Allocate space for solution and work arrays
//
    double[] Tarray     = new double[m*n];
    double[] workArray  = new double[m*n];
//
//
    initializeTemperature(Tarray,m,n,a,b,c,d);
    if(contourPlot != null) contourPlot.setData(Tarray,m,n);

    int i;
    for(i = 1; i <= nSteps; i++)
    {
    evolveTemperature(Tarray,m,n,a,b,c,d,dt,diffusivity,workArray);
    if((i%nOut)== 0)
    {
    if(contourPlot != null) contourPlot.setData(Tarray,m,n);
    System.out.println("Step : " + i);
    }
    }
}

public static void main(String [] args)
{
//
//  create a tempCalcJava object instance
//
    TempCalcJava temperatureRun = new TempCalcJava();
//
//  Set Problem parameters
//
    temperatureRun.diffusivity = 0.1;
    temperatureRun.a           = 0.0;
    temperatureRun.b           = 1.0;
    temperatureRun.c           = 0.0;
    temperatureRun.d           = 1.0;
//
//  Set Runtime parameters
//
    temperatureRun.m            = 10;
    temperatureRun.n            = 20;
 	temperatureRun.nSteps       = 100;
    temperatureRun.nOut         = 10;
    temperatureRun.dt           = 0.01;

    temperatureRun.run();
}
//
//  native method declarations
//
public native void initializeTemperature(double[] Tarray, int m, int n,
double a, double b, double c, double d);

public native void evolveTemperature(double[] Tarray, int m, int n,
double a, double b, double c, double d, double dt, double diffusivity,
double[] workArray);
//
// Load DLL (or shared library) which contains implementation of native methods
//
static
{
    System.loadLibrary("TempCalcJava");
}

}