JAVA Help

import java.util.*;
class linear
{
    public static void main()
    {
        Scanner s=new Scanner(System.in);
        int i,key,x=0;
        System.out.println("ENTER KEY");
        key=s.nextInt();
        int arr[]=new int[10];
        System.out.println("ENTER 10 NOS.");
        for (i=0;i< 10;i++)
         arr[i]=s.nextInt();
        for (i=0;i< 10;i++)
         if(arr[i]==key)
         {
         System.out.println("KEY IS FOUND AT INDEX NO. "+i);
         x++;
         }
         if(x==0)
         System.out.println("KEY NOT FOUND");
    }
}