voilmon message (ainsi que le debut de mon code)derreur dans mon code de recherche de mot en java:
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.(Unknown Source)
at java.util.Scanner.(Unknown Source)
at geekette.main(geekette.java:10)


import java.io.*;
import java.util.Scanner;

public class geekette

public static void main (String[]args) throws IOException

File paragre = new File ("p.txt");
Scanner sc = new Scanner (paragre);
StringBuffer buff = new StringBuffer();
File motre = new File ("r.txt");
if (motre.exists());

System.out.println ("le fichier existe");
System.exit(0);

PrintWriter output = new PrintWriter (motre);

int m = sc.nextInt(); //ligne
int n = sc.nextInt(); //colone
char grille [][] = new char [m][n]; //etablir la dimension de la grille

//transfert fichier grille
for (int i = 0; i < grille.length; i ++)

for (int j = 0; j < grille[i].length; j++)

String s = sc.next();
grille[i][j] = s.charAt(0);


int runs = sc.nextInt();

//boucle lancement recherche pour chaque mot

for (int i = 0; i < runs; i++)

int ligne = 0;
int colone = 0;
//variable de localisation du mot

boolean found = false;
String mot = sc.next();
int length = mot.length();
//inverser le mot
buff.append(mot);
buff.reverse();
String backWord = buff.toString();