Bonsoir à tous et merci pour votre temps. Lorsque j'exécute ce code en eclipse , ça m'affiche une erreur "java.lang.ArrayIndexOutOfBoundsException: 0" liée au dernière ligne du code.

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import java.util.*;
import java.io.*;
 
/** Simulates Manning & Schützes "Crazy Soft Drink Machine" -
    Generates an output sequence of length t */
public class soda {
  /** initial state probabilities */
  private int pi_min[];
  private int pi_max[];
  /** transition probabilities */
  private int a_min[][];
  private int a_max[][];
 
  /** output probabilities */
  private int b_min[][];
  private int b_max[][];
 
  /** output symbols */
  private static final int cola = 0;
  private static final int ice_t = 1;
  private static final int lem = 2;
 
  /** states */
  private static final int cola_pref = 0;
  private static final int ice_t_pref = 1;
 
  /** initialization of the HMM as in M&S, page 321 */
  private void init() {
    pi_min = new int[2];
    pi_max = new int[2];
 
    pi_min[cola_pref] = 1;
    pi_max[cola_pref] = 1000;
    pi_min[ice_t_pref] = 0;
    pi_max[ice_t_pref] = 0;
 
    a_min = new int[2][2];
    a_max = new int[2][2];
 
    a_min[cola_pref][cola_pref] = 1;
    a_max[cola_pref][cola_pref] = 700;
    a_min[cola_pref][ice_t_pref] = 701;
    a_max[cola_pref][ice_t_pref] = 1000;
    a_min[ice_t_pref][cola_pref] = 1;
    a_max[ice_t_pref][cola_pref] = 500;
    a_min[ice_t_pref][ice_t_pref] = 501;
    a_max[ice_t_pref][ice_t_pref] = 1000;
 
    b_min = new int[2][3];
    b_max = new int[2][3];
 
    b_min[cola_pref][cola] = 1;
    b_max[cola_pref][cola] = 600;
 
    b_min[cola_pref][ice_t] = 601;
    b_max[cola_pref][ice_t] = 700;
 
    b_min[cola_pref][lem] = 701;
    b_max[cola_pref][lem] = 1000;
 
    b_min[ice_t_pref][cola] = 1;
    b_max[ice_t_pref][cola] = 100;
 
    b_min[ice_t_pref][ice_t] = 101;
    b_max[ice_t_pref][ice_t] = 800;
 
    b_min[ice_t_pref][lem] = 801;
    b_max[ice_t_pref][lem] = 1000;
  }
 
  /** generation of output sequence */
  private void gen_output(int t) {
    try {
      PrintWriter pw = new PrintWriter(new FileWriter("crazysoda.seq"));
 
      pw.println(t);
 
      int rnd_number = ((int) (Math.random() * 1000)) + 1;
      int state;
 
      for (state = 0; state < 2; state++) {
	if ((pi_min[state] <= rnd_number) && (pi_max[state] >= rnd_number))
	  break;
      }
 
      for (int i = 0; i < t; i++) {
	rnd_number = ((int) (Math.random() * 1000)) + 1;
	for (int symb = 0; symb < 3; symb++) {
	  if ((b_min[state][symb] <= rnd_number) && (b_max[state][symb]) >= rnd_number) {
	    printSymbol(symb, pw);
	    break;
	  }
	}
 
	rnd_number = ((int) (Math.random() * 1000)) + 1;
	for (int newState = 0; newState < 2; newState++) {
	  if ((a_min[state][newState] <= rnd_number) && (a_max[state][newState] >= rnd_number)) {
	    state = newState;
	    break;
	  }
	}
      }
      pw.println();
      pw.close();
    }
    catch (IOException e) {
      System.out.println("crazysoda.seq cannot be loaded.");
      System.exit(0);
    }
  }
 
  /** output of a Symbol */
  private void printSymbol(int s, PrintWriter pw) {
    pw.print(s);
  }
 
  /** Main program. Invoke with java soda <t>, where t is the length of
      the sequence to be generated. */
  public static void main(String argv[]) {
    soda s = new soda();
    s.init();
    s.gen_output(Integer.parseInt(argv[0]));
  }
}