How to use my findTheHighest method to find the highest value in my two dim

Question

I am going to create a 13row by 10 colume two dimensional array.
how to use my findTheHighest method to find the highest value in my two dimensional array.
.When i compile this program , i got those as following;
"Exception in thread "main" java.lang.ArrayIndexOutOfBoundsExce
at TaxEvolution.findTheHighest(TaxEvolution.java:31)
at TaxEvolutionClient.main(TaxEvolutionClient.java:25)"
public class TaxEvolution{
public double[][] salesTaxRates;
public TaxEvolution()
  salesTaxRates = new double[13][10];
  fillProvinTaxRates();
private void fillProvinTaxRates()
  for ( int row = 0; row < salesTaxRates.length; row++ )
    for ( int column = 0; column < salesTaxRates[row].length; column++ )
      salesTaxRates[row][column]= (int)(Math.random()*5000) + 1;
public double findTheHighest()
    double highest = salesTaxRates[0][0];
    for ( int row = 0; row <= salesTaxRates.length; row++ )
      for ( int column = 0; column <= salesTaxRates[row].length; column++ )
         if ( salesTaxRates[row][column] >= highest )
               highest = salesTaxRates[row][column];
    return highest;   
public double[][] arrayTaxEvolution()
  double[][] returnTaxRates = new double[13][10];
  for ( int row = 0; row < salesTaxRates.length; row++ )
    for ( int column = 0; column < salesTaxRates[row].length; column++ )
      returnTaxRates = salesTaxRates;
  return returnTaxRates;
public class TaxEvolutionClient{
public static void main( String[] args ){
  TaxEvolution protaxRateList = new TaxEvolution();
  double[][] taxRateList = protaxRateList.arrayTaxEvolution();
    for ( int i = 0; i < taxRateList.length; i++ )
      for ( int j = 0; j < taxRateList[0].length; j++ )
        System.out.print( taxRateList[i][j] + "\t" );               
        System.out.print( protaxRateList.findTheHighest + "\t" );
}

Answer 1

Multiposted
http://forum.java.sun.com/thread.jspa?threadID=699057&tstart=0