diff --git a/src/main/java/_3/_1/Account.java b/src/main/java/_3/_1/Account.java
new file mode 100644
index 0000000..747fb51
--- /dev/null
+++ b/src/main/java/_3/_1/Account.java
@@ -0,0 +1,21 @@
+package _3._1;
+
+public class Account {
+	
+	private Customer[] holders;
+	private long balance;
+	private String iban;
+	
+	public Account(String iban) { this.iban = iban; }
+
+	public Customer[] getHolders() { return holders; }
+
+	public void setHolders(Customer[] holders) { this.holders = holders; }
+
+	public long getBalance() { return balance; }
+
+	public void setBalance(long balance) { this.balance = balance; }
+
+	public String getIban() { return iban; }
+
+}
diff --git a/src/main/java/_3/_1/Address.java b/src/main/java/_3/_1/Address.java
new file mode 100644
index 0000000..a7730ae
--- /dev/null
+++ b/src/main/java/_3/_1/Address.java
@@ -0,0 +1,21 @@
+package _3._1;
+
+public class Address {
+	
+	private String street;
+	private String postCode;
+	private String city;
+
+	public String getStreet() { return street; }
+	
+	public void setStreet(String street) { this.street = street; }
+	
+	public String getPostCode() { return postCode; }
+	
+	public void setPostCode(String postCode) { this.postCode = postCode; }
+	
+	public String getCity() { return city; }
+	
+	public void setCity(String city) { this.city = city; }
+
+}
diff --git a/src/main/java/_3/_1/Bank.java b/src/main/java/_3/_1/Bank.java
new file mode 100644
index 0000000..1a3ad4f
--- /dev/null
+++ b/src/main/java/_3/_1/Bank.java
@@ -0,0 +1,18 @@
+package _3._1;
+
+public class Bank {
+	
+	private String name;
+	private Account[] accounts;
+
+	public Bank(String name) { this.name = name; }
+	
+	public String getName() { return name; }
+
+	public void setName(String name) { this.name = name; }
+
+	public Account[] getAccounts() { return accounts; }
+
+	public void setAccounts(Account[] accounts) { this.accounts = accounts; }
+
+}
diff --git a/src/main/java/_3/_1/Banking.java b/src/main/java/_3/_1/Banking.java
new file mode 100644
index 0000000..8297b2f
--- /dev/null
+++ b/src/main/java/_3/_1/Banking.java
@@ -0,0 +1,27 @@
+package _3._1;
+
+public class Banking {
+	
+	public static void main(String[] args) {
+		Bank sbt = new Bank("Smaug Bank & Trust");
+		sbt.setAccounts(new Account[1]);
+		sbt.getAccounts()[0] = new Account("ER99123412341234123412");
+		sbt.getAccounts()[0].setBalance(54100000000L);
+		Customer thorin = new Customer();
+		thorin.setAccounts(new Account[1]);
+		thorin.getAccounts()[0] = sbt.getAccounts()[0];
+		thorin.setName("Thorin");
+		Address home = new Address();
+		home.setStreet("Kingsroad 1");
+		home.setPostCode("12345");
+		home.setCity("Dunland");
+		thorin.setHomeAddress(home);
+		Address work = new Address();
+		work.setStreet("Throneroom 1");
+		work.setPostCode("54321");
+		work.setCity("Erebor");
+		thorin.setWorkAddress(work);
+		sbt.getAccounts()[0].setHolders(new Customer[] { thorin });
+	}
+
+}
diff --git a/src/main/java/_3/_1/Customer.java b/src/main/java/_3/_1/Customer.java
new file mode 100644
index 0000000..2daaeb7
--- /dev/null
+++ b/src/main/java/_3/_1/Customer.java
@@ -0,0 +1,26 @@
+package _3._1;
+
+public class Customer {
+	
+	private String name;
+	private Account[] accounts;
+	private Address homeAddress;
+	private Address workAddress;
+	
+	public String getName() { return name; }
+	
+	public void setName(String name) { this.name = name; }
+	
+	public Account[] getAccounts() { return accounts; }
+	
+	public void setAccounts(Account[] accounts) { this.accounts = accounts; }
+	
+	public Address getHomeAddress() { return homeAddress; }
+	
+	public void setHomeAddress(Address homeAddress) { this.homeAddress = homeAddress; }
+	
+	public Address getWorkAddress() { return workAddress; }
+	
+	public void setWorkAddress(Address workAddress) { this.workAddress = workAddress; }
+
+}