Iterator Pattern

Account.java

public class Account {

	String customerName;
	public String getCustomerName() {
		return customerName;
	}
	public void setCustomerName(String customerName) {
		this.customerName = customerName;
	}
	public int getAccountNo() {
		return accountNo;
	}
	public void setAccountNo(int accountNo) {
		this.accountNo = accountNo;
	}
	int accountNo;
	public Account() {
		// TODO Auto-generated constructor stub
	}
	public Account(String customerName, int accNo){
		this.customerName=customerName;
		this.accountNo=accNo;
	}
	public String toString(){
		return "[Account Holder Name : "+customerName+", Account No : "+accountNo+"]";
	}
}

AccountList.java

import java.util.ArrayList;

public class AccountList {

	private ArrayList accountList ;
	
	public AccountList() {
		// TODO Auto-generated constructor stub
		this.accountList=new ArrayList();
	}
	public void push(Account account){
		this.accountList.add(account);
	}
	public Account get(int index){
		return accountList.get(index);
	}
	public int getSize(){
		return accountList.size();
	}
}

AccountListIterator.java

public class AccountListIterator {
	private int index;
	AccountList accountList;
	
	public AccountListIterator(AccountList accList) {
		this.accountList=accList;
		index=0;
	}
	public Account next(){
		return accountList.get(index++);
	}
	public boolean hasNext(){
		return index<accountList.getSize();
	}
}

IteratorPatternDemo.java

public class IteratorPatternDemo {

	public IteratorPatternDemo() {
		// TODO Auto-generated constructor stub
	}

	public static void main(String[] args) {
		Account acc1 = new Account("Jany Jose", 123);
		Account acc2 = new Account("Hana Mose", 223);
		Account acc3 = new Account("Tina Bose", 323);
		Account acc4 = new Account("Mina Kose", 423);
		
		AccountList accList = new AccountList();
		accList.push(acc1);
		accList.push(acc2);
		accList.push(acc3);
		accList.push(acc4);
		
		AccountListIterator itr  = new AccountListIterator(accList);
		while(itr.hasNext()){
			System.out.println("Account : "+itr.next());
		}
	}

}

Output