diff --git a/darmawanabi/oop_class.py b/darmawanabi/oop_class.py
new file mode 100644
index 0000000..881ccf0
--- /dev/null
+++ b/darmawanabi/oop_class.py
@@ -0,0 +1,22 @@
+class Employee:
+
+    # mendefinisikan atribut diluar konstruktor
+    empCount = 0
+
+    def __init__(self, name, salary):
+        self.name = name
+        self.salary = salary
+        # name dan salary merupakan atribut yang didefinisikan didalan cons
+
+        Employee.empCount += 1
+
+    def displayCount(self):
+        print("Total Karyawan : ", Employee.empCount)
+        
+    def displayEmployee(self):
+        print("Nama : ", self.name)
+        print("Gaji : ", self.salary)
+
+emp1 = Employee("Darmawan Abinugroho", 1000)
+emp1.displayEmployee()
+emp1.displayCount()
diff --git a/darmawanabi/oop_encapsulation.py b/darmawanabi/oop_encapsulation.py
new file mode 100644
index 0000000..30035b8
--- /dev/null
+++ b/darmawanabi/oop_encapsulation.py
@@ -0,0 +1,20 @@
+class computer:
+
+    def __init__(self):
+        self.maxPrice = 750
+
+    def sell(self):
+        print("Harga Jual : {}".format(self.maxPrice))
+
+    def setMaxPrice(self, price):
+        self.maxPrice = price
+
+comp = computer()
+comp.sell()
+
+comp.maxPrice = 1000
+comp.sell()
+
+# gunakan fungsi setter 
+comp.setMaxPrice(2000)
+comp.sell()
diff --git a/darmawanabi/oop_inheritance.py b/darmawanabi/oop_inheritance.py
new file mode 100644
index 0000000..b96346c
--- /dev/null
+++ b/darmawanabi/oop_inheritance.py
@@ -0,0 +1,28 @@
+class Bird:
+
+    def __init__(self):
+        print("Bird Initialization")
+
+    def siapaYa(self):
+        print("Bird")
+
+    def swim(self):
+        print("Swim Faster")
+
+class Penguin(Bird):
+
+    def __init__(self):
+        # memanggil super func
+        super().__init__()
+        print("Penguin Initialization")
+
+    def siapaYa(self):
+        print("Penguin")
+
+    def run(self):
+        print("Run Faster")
+
+ping = Penguin()
+ping.siapaYa()
+ping.swim()
+ping.run()
diff --git a/darmawanabi/oop_overloading.py b/darmawanabi/oop_overloading.py
new file mode 100644
index 0000000..0d84a2b
--- /dev/null
+++ b/darmawanabi/oop_overloading.py
@@ -0,0 +1,18 @@
+class A:
+    
+    def __init__(self, a):
+        self.a = a
+    
+    def add(self, b):
+        return self.a + b.a
+    
+
+obj1 = A(1)
+obj2 = A(2)
+obj3 = A("hemmmm")
+obj4 = A("apasii")
+
+print(obj1 + obj2)
+print(obj3 + obj4)
+
+# masih error
diff --git a/darmawanabi/oop_polymorphism.py b/darmawanabi/oop_polymorphism.py
new file mode 100644
index 0000000..022063d
--- /dev/null
+++ b/darmawanabi/oop_polymorphism.py
@@ -0,0 +1,20 @@
+class Parrot:
+
+    def __init__(self):
+        print("Parrot can fly")
+    
+class Penguin:
+    
+    def fly(self):
+        print("Penguin can't fly")
+    
+def flyingTest(bird):
+    bird.fly()
+
+blu = Parrot()
+# peggy = Penguin()
+
+flyingTest(blu)
+# flyingTest(peggy)
+
+# masih error