Directory rename

3 files changed, 50 insertions, 0 deletions

diff --git a/oop/01-data-abstraction/.gitignore b/oop/01-data-abstraction/.gitignore
new file mode 100644
index 0000000..6b468b6
--- /dev/null
+++ b/oop/01-data-abstraction/.gitignore
@@ -0,0 +1 @@
+*.class
diff --git a/oop/01-data-abstraction/Account.java b/oop/01-data-abstraction/Account.java
new file mode 100644
index 0000000..03a9e9c
--- /dev/null
+++ b/oop/01-data-abstraction/Account.java
@@ -0,0 +1,26 @@
+
+public class Account {
+	
+	/* Declaring fields  - represent state */
+	
+	int accountNumber;
+	double balance;
+	
+	
+	/* Declaring methods - represent operations */
+	
+	public void withdraw(double amount) {
+		if (balance >= amount) {
+			balance = balance - amount;
+		}
+	}
+
+	public void deposit(double amount) {
+		balance += amount;
+	}
+	
+	public double getBalance() {
+		return balance;
+	}
+	
+}
diff --git a/oop/01-data-abstraction/AccountTest.java b/oop/01-data-abstraction/AccountTest.java
new file mode 100644
index 0000000..0409d86
--- /dev/null
+++ b/oop/01-data-abstraction/AccountTest.java
@@ -0,0 +1,23 @@
+
+public class AccountTest {
+
+	/**
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		Account a1 = new Account(); // Instantiation of 'Account' class
+		Account a2 = new Account();
+		
+		System.out.println(a1.getBalance());
+		
+		a1.deposit(100.0);
+		System.out.println(a1.getBalance());
+		
+		a1.withdraw(50.0);
+		System.out.println(a1.getBalance());
+		
+		a2.deposit(100.0);
+		System.out.println(a2.getBalance());
+	}
+
+}