Creating Array of Objects in java

Code for Connection Class


package javaapplication1;

public class Connection {
 
    private int connId;
    private int customerId;
    private String customerEmail;
    private double balance;
    public Connection(int connId,int customerId,String customerEmail,double balance)
    {
        this.connId = connId;
        this.customerId = customerId;
        this.customerEmail = customerEmail;
        this.balance = balance;
    }

    public double getBalance() {
        return balance;
    }

    public int getConnId() {
        return connId;
    }

    public int getCustomerEmail() {
        return customerEmail;
    }

    public int getCustomerId() {
        return customerId;
    }

    public void setBalance(double balance) {
        this.balance = balance;
    }

    public void setCustomerEmail(int customerEmail) {
        this.customerEmail = customerEmail;
    }
 
}

Code for ConnectionDemo Class in java which contains the main method

package javaapplication1;

import java.util.Scanner;

public class ConnectionDemo {

    public static void main(String args[])

    {

       Scanner sc=new Scanner(System.in);

       Scanner sc1=new Scanner(System.in);

       Connection[] connections=new Connection[3];

       for(int i=0;i<connections.length;i++)

       {

            System.out.println("Enter connection id:");

            int connId = sc.nextInt();

            System.out.println("Enter customer Id:");

            int custId = sc.nextInt();

            System.out.println("Enter customer email:");

            String email = sc1.nextLine();

            System.out.println("Enter customer balance:");

            double balance = sc.nextDouble();

            connections[i]=new Connection(connId,custId,email,balance);

       }

       double avgBalance = getAverageBalance(connections,1);

       System.out.println("average balance for customer with id 1 is " + avgBalance);

    }

    public static double getAverageBalance(Connection[] connections, int custId)

    {

        double balance = 0;

        int custCount = 0;

        for(int i = 0;i<connections.length;i++)

        {

            if(custId == connections[i].getCustomerId())

            {

                custCount++;

                balance = balance + connections[i].getBalance();

            }

        }

        balance = balance/custCount;

        return balance;

    }

}

Output