Update inheritance.md

10_Inheritance/inheritance.md

@@ -1 +1,72 @@
+# INHERITANCE IN JAVA
+
+Inheritance is a process in which one object acquires all the properties and behaviors of its parent object automatically. In such a way, you can reuse, extend or modify the attributes and behaviors which are defined in other classes. 
+
+In Java, the class which inherits the members of another class is called **derived class** and the class whose members are inherited is called **base class**. The derived class is the specialized class for the base class. 
+
+***Types of Inheritance :***
+
+## **1. Single inheritance :**
+
+When one class inherits another class, it is known as single level inheritance 
+
+```
+class Shape {
+   public void area() {
+       System.out.println("Displays Area of Shape");
+   }
+}
+class Triangle extends Shape {
+   public void area(int h, int b) {
+       System.out.println((1/2)*b*h);
+   }  
+}
+```
+
+## **2. Hierarchical inheritance :**
+
+Hierarchical inheritance is defined as the process of deriving more than one class from a base class. 
+
+```
+class Shape {
+   public void area() {
+       System.out.println("Displays Area of Shape");
+   }
+}
+class Triangle extends Shape {
+   public void area(int h, int b) {
+       System.out.println((1/2)*b*h);
+   }  
+}
+class Circle extends Shape {
+   public void area(int r) {
+       System.out.println((3.14)*r*r);
+   }  
+```
+
+## **3. Multilevel inheritance :**
+
+ Multilevel inheritance is a process of deriving a class from another derived class. 
+
+```
+class Shape {
+   public void area() {
+       System.out.println("Displays Area of Shape");
+   }
+}
+class Triangle extends Shape {
+   public void area(int h, int b) {
+       System.out.println((1/2)*b*h);
+   }  
+}
+class EquilateralTriangle extends Triangle {
+   int side;
+}
+```
+
+## **4. Hybrid inheritance :**
+
+Hybrid inheritance is a combination of 
+simple, multiple inheritance and hierarchical inheritance. 
+