CustomerTest.java

package lesson3;

public class CustomerTest {
    public static void main(String[] args){
    Customer c1=new Customer("Leul","Tsige","123-45-67");
    Customer c2=new Customer("Renuka","Mohanraj","987-64-32");
    Customer c3=new Customer("Robert","Tom","012-13-11");
    Address a1=new Address("1000Nw","Strayer","Washington DC","15512");
    Address a2=new Address("815NE","Woodbridge","VA","22191");
    Address a3=new Address("215 lake dr","Chicago","Illinois","1152");

       c1.setBillingAddress(a1);
       c2.setBillingAddress(a2);
       c3.setBillingAddress(a3);

       Customer[] customers=new Customer[3];
           customers[0]=c1;
           customers[1]=c2;
           customers[2]=c3;
           for(int i=0;i< customers.length;i++){
            String a= customers[i].getBillingAddress().getCity();
            if(a.equals("Chicago")){
                System.out.println(customers[i]);
            }
       }
    }
}