Directory rename

5 files changed, 76 insertions, 0 deletions

diff --git a/oop/02-inheritance/.gitignore b/oop/02-inheritance/.gitignore
new file mode 100644
index 0000000..6b468b6
--- /dev/null
+++ b/oop/02-inheritance/.gitignore
@@ -0,0 +1 @@
+*.class
diff --git a/oop/02-inheritance/Account.java b/oop/02-inheritance/Account.java
new file mode 100644
index 0000000..91acb95
--- /dev/null
+++ b/oop/02-inheritance/Account.java
@@ -0,0 +1,24 @@
+
+public abstract class Account {
+	
+	/* Declaring fields  - represent state */
+	protected int accountNumber;
+	protected double balance;
+	
+	public Account() {
+		/// 
+	}
+	
+	/* Declaring methods - represent operations */
+	
+	public abstract void withdraw(double amount);
+	
+	public void deposit(double amount) {
+		balance += amount;
+	}
+	
+	public double getBalance() {
+		return balance;
+	}
+	
+}
diff --git a/oop/02-inheritance/AccountTest.java b/oop/02-inheritance/AccountTest.java
new file mode 100644
index 0000000..cc5056b
--- /dev/null
+++ b/oop/02-inheritance/AccountTest.java
@@ -0,0 +1,22 @@
+
+public class AccountTest {
+
+	/**
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		SavingsAccount a1 = new SavingsAccount();
+	
+		Account a3 = new SavingsAccount();
+				
+		Account a2 = new CheckingAccount();
+		
+
+		
+		CheckingAccount a4 = new CheckingAccount();
+		
+		
+//		CheckingAccount a5 = new SavingsAccount(); // not working
+	}
+
+}
diff --git a/oop/02-inheritance/CheckingAccount.java b/oop/02-inheritance/CheckingAccount.java
new file mode 100644
index 0000000..a7c19b8
--- /dev/null
+++ b/oop/02-inheritance/CheckingAccount.java
@@ -0,0 +1,20 @@
+
+public class CheckingAccount extends Account {
+	
+	
+	protected double overdraftLimit;
+
+
+	public void withdraw(double amount) {
+		double finalBalance = balance - amount;
+		if (finalBalance < 0) {
+			if (-finalBalance <= overdraftLimit) {
+				balance = finalBalance;
+			} else {
+				// throw exception
+			}
+		} else {
+			balance =  finalBalance;
+		}
+	}
+}
diff --git a/oop/02-inheritance/SavingsAccount.java b/oop/02-inheritance/SavingsAccount.java
new file mode 100644
index 0000000..497fb3d
--- /dev/null
+++ b/oop/02-inheritance/SavingsAccount.java
@@ -0,0 +1,9 @@
+
+public class SavingsAccount extends Account {
+
+	public void withdraw(double amount) {
+		if (balance >= amount) {
+			balance = balance - amount;
+		}
+	}
+}