diff --git a/5. Classes/Abs.java b/5. Classes/Abs.java
new file mode 100644
index 0000000..81b03e3
--- /dev/null
+++ b/5. Classes/Abs.java	
@@ -0,0 +1,7 @@
+
+/*
+ * Abs is a sub class of Sup class and the super class for SubAbs class
+ */
+abstract class Abs extends Sup{
+	abstract void printSomething();
+}
diff --git a/5. Classes/README.md b/5. Classes/README.md
new file mode 100644
index 0000000..49d6772
--- /dev/null
+++ b/5. Classes/README.md	
@@ -0,0 +1,2 @@
+#Abstract Classes and Abstract methods
+created a class Sup, that has a method print() which prints 'I am super', then create a Abs subclass which has an abstract method, printSomething(). Then create another subclass of Abs and override the method to print 'My super class is Abs'.
diff --git a/5. Classes/SubAbs.java b/5. Classes/SubAbs.java
new file mode 100644
index 0000000..f5edd91
--- /dev/null
+++ b/5. Classes/SubAbs.java	
@@ -0,0 +1,11 @@
+/*
+ * SubAbs is the subclass of Abs class
+ */
+public class SubAbs extends Abs{
+
+	@Override
+	void printSomething() {
+		System.out.println("");
+	}
+
+}
diff --git a/5. Classes/Sup.java b/5. Classes/Sup.java
new file mode 100644
index 0000000..3bc1c34
--- /dev/null
+++ b/5. Classes/Sup.java	
@@ -0,0 +1,8 @@
+/*
+ * Sup is the supper class of Abs class and indirectly the highest super class of SubAbs class 
+ */
+public class Sup {
+	void print(){
+		System.out.println("I am Super");
+	}
+}