import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Array {

  public static void main(String[] args) throws IOException
   {
    BufferedReader ch=new BufferedReader(new InputStreamReader(System.in));

    System.out.println("Hello Worldn");

    System.out.println ("nEnter the number of elements:");
    int n=Integer.parseInt(ch.readLine());

    int a[]=new int[n];

    for (int i=1;i<=n;i++)
    {
        a[i]=Integer.parseInt(ch.readLine());
    }
    System.out.println ("nThe elements are as follows:n");

    for(int i=1;i<=n;i++)
    {
        System.out.println (a[i]+"t");
    }


  }
}

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1
at Array.main(Array.java:26)