Erreur de type ArrayOutOfBoundException

Salut mon programme a pour but de calculer la distance entre deux lignes dans un tableau j'ai tombé dans cette erreur
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4
at CAH.CAH.main(CAH.java:44)

Code:

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package CAH;
 
/**
 *
 * @author assus
 */
public class CAH {
    public double X[][];
    public double W[][];
    public String P[];
      public  double dis[][];
 
    public CAH(int m) {
        this.X = new double [4][2];
        this.W = new double [4][4];
        this.P = new String[4];
         this.dis = new double [4][2];
    }
 
    public void dis(){
        for(int i=0;i<6;i++){
            for(int j=0;j<6;j++){
                dis[i][j]=Math.pow((X[i][0]-X[j][0]),2)+Math.pow((X[i][1]-X[j][1]), 2);
         //dis[i][j]=Math.pow(X[0][0]-X[1][0],2)+Math.pow(X[0][1]-X[1][1],2);
               // System.out.println("dis"+dis[i][j]);
            }
        }
 
 
         }
    public static void main(String[] args) {
 
 
        CAH c=new CAH(5);
        c.X[0][0]=2;       c.X[0][1]=2;
        c.X[1][0]=7.5;     c.X[1][1]=4;         
        c.X[2][0]=3;       c.X[2][1]=3;
        c.X[3][0]=0.5;     c.X[3][1]=5; 
        c.X[4][0]=6;       c.X[4][1]=4;
 
         c.dis();
         System.out.println(" distance ");
         System.out.println(c.dis[0][0]+"    "+c.dis[0][1]+"    "+c.dis[0][2]+"    "+c.dis[0][3]+"  "+c.dis[0][4]);
         System.out.println(c.dis[1][0]+"    "+c.dis[1][1]+"    "+c.dis[1][2]+"    "+c.dis[1][3]+"  "+c.dis[1][4]);
         System.out.println(c.dis[2][0]+"    "+c.dis[2][1]+"    "+c.dis[2][2]+"    "+c.dis[2][3]+"  "+c.dis[2][4]);
         System.out.println(c.dis[3][0]+"    "+c.dis[3][1]+"    "+c.dis[3][2]+"    "+c.dis[3][3]+"  "+c.dis[3][4]);
         System.out.println(c.dis[4][0]+"    "+c.dis[4][1]+"    "+c.dis[4][2]+"    "+c.dis[4][3]+"  "+c.dis[4][4]);
 
    }
    }

j'attend vos reponse Merci d'avance