I need help creating a method!

Question

Hi,
I'm following a Java course, we have a homework to do and I have some problems with it... We have to create a table (int [] a) with a 100 elements ( 0,2,4,6 ... to 198 - all even) we have to go through a "for" to fill the table (I have no problem with that) but the thing is that we have to create a JOptionPane asking a value and our method has to find that value in the table and give the position of that value. And if the value is not even a JOptionPane has to respond "that value is not in the table". I'll give yall an example:
let's say that table [4] contains the value 8. If "8" is enter in the JOptionPane the program will return "the position of 8 in the table is 4"
here is what I have done so far (some of the text is in french):
import javax.swing.*;
import java.awt.*;
public class TP3a extends JApplet{
     JTextArea zone = new JTextArea ();
     String sortie= " ";
     String cle1;
     int indice=0;
     int cle;
     int [] tableau = new int [100];
          public void init (){
                    for (int x=0; x<=200; x++){
                         tableau[x]= x*2+2;
                         indice=x;
               cle1=JOptionPane.showInputDialog ("Entrer la valeur de l'element que vous desirez voir: ");
               cle=Integer.parseInt (cle1);
               rechercheIndice (int tableau [], cle);
                    sortie+=tableau [cle];
                    zone.append (sortie);
                    JOptionPane.showMessageDialog (null, zone, "Tableau", JOptionPane.PLAIN_MESSAGE);
                    System.exit (0);
          public int rechercheIndice (int tableau [], int cle){
               for (int x; x<=tableau.length; x++){
                    if (cle == tableau [x])
                         return tableau [cle];
                         else
                         continue;
Please help me!!!
Thanks,
Neriade

Answer 1

import javax.swing.*;
import java.awt.*;
public class TP3a extends JApplet{
      JTextArea zone = new JTextArea ();
      String sortie= " ";
      String cle1;
      int indice=0;
      int cle;
      int [] tableau = new int [100];
      public void init (){
      for (int x=0, y = 0; x<100; x++, y += 2 ){
         tableau[x]= y;
         indice=x;
      cle1=JOptionPane.showInputDialog ("Entrer la valeur de l'element que vous desirez voir: ");
      cle=Integer.parseInt (cle1);
      int i = rechercheIndice (tableau, cle);
      System.out.println( "i: " + i );
      sortie+=tableau [cle];
      zone.append (sortie);
      JOptionPane.showMessageDialog (null, zone, "Tableau", JOptionPane.PLAIN_MESSAGE);
      System.exit (0);
      public int rechercheIndice (int[] tableau, int cle){
      for (int x = 0; x<tableau.length; x++){
         if (cle == tableau [x])
            return x;//tableau [cle];
      return -1;
}