Question

I am trying to solve a program an exception is occuring again and again i dont know why help me out here is my code

import java.util.*;
public class Fashion
{
    public static void main(String args[])
    {
    int sum=0;
    Scanner in=new Scanner(System.in);
    System.out.println("enter the number of judges");
    int x=in.nextInt();
    int a[]=new int[x];
    if((x<20)&&(x%2==1))
       {
       System.out.println("score given by judges");
       for(int i=0;i<x;i++)
         {
         a[i]=in.nextInt();
         }
       }
    int mid=(1+x)/2;
       for(int k=0;k<mid;k++)
       {
        if(a[mid+k]==a[mid-k])    //exception here why 
         {
         sum=sum+a[mid+k];
         }
       }
    System.out.println("the number get by the contestant is "+sum);
    }
}

Answer 1

Looks like you might be getting ArrayIndexOutOfBoundsException for which Maroun has answered in his comment

Before trying to look inside a you should check that you didn’t exceed
the array dimension. (mid-k and mid+k should be smaller than zero or
greater than x in your case)