This is java class. Two thing of this homework: 1 . the code has part \" array\"

Question

This is java class.

Two thing of this homework:

1 . the code has part " array" in the code., negative number >>> you typed it wrong

2 when you have avarage number ,I need the this kind: 5.2, 3.7 4.9. 2.1 3..... when you enter : any nopostitive number . example: -1, -2, -3. -4 >>> then and then afterward must enter all N numbers. Use an array to save the N integers. If the Write a program that calculates the average of N integers. The program should prompt the user to enter the value for N and then afterward must enter all N numbers. Use an array to save the N integers. If the user enters a nonpositive value for N, then an exception should be thrown (and caught) with the message "N must be positive." If there is any exception as the user is entering the N numbers, an error message should be displayed, and the user prompted to enter the number again.

Explanation / Answer

/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

class Ideone
{
   public static void main (String[] args) throws java.lang.Exception
   {
       int n=0;
       int i;
       int [] arr= new int[20];
       Scanner in = new Scanner(System.in);
       try {
            System.out.print("Enter value to N: ");
            n = in.nextInt();
            if( n < 0 )
               throw new Exception("N must be positive.");
        }catch(Exception exc)
       {
           System.out.println("Error: " + exc.getMessage());
       }
       System.out.print("Enter value to array: ");
       try
       {
           for(i=0;i<n;i++)
           {
               arr[i]=in.nextInt();
               if(arr[i]<0)
               {
                   throw new Exception("Can not enter negative number in array!!! Please Enter numbers in array again ");
               }
           }
       }catch(Exception e)
       {
           System.out.println("Error: " + e.getMessage());
       }
   }
}

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