Merge pull request #882 from KeerthanaPravallika/Keerthana

Added MultiLevel Inheritance in Java

Author: Saviour1001

OOPs/Inheritance/MultiLevel_Inheritance.java

@@ -0,0 +1,69 @@
+/*
+    Inheritance : Inheritance in Java is a mechanism in which one object 
+                  acquires all the properties and behaviors of a parent object. 
+                  
+    Multilevel Inheritance : When there is a chain of inheritance, it is known as multilevel inheritance.  
+    
+            class A
+               ^
+               |
+               |
+            class B
+               ^
+               |
+               |
+            class C
+            
+                   
+*/
+
+class base_class1
+{
+    int base_value;
+    base_class1(int num)          // constructor
+    {
+        base_value = num;
+    }
+}
+
+class base_class2 extends base_class1       
+{
+    int derived_value;
+    base_class2(int base_val,int der_val)   // constructor
+    {
+        super(base_val);
+        derived_value = der_val;
+    }
+    void base_display()
+    {
+        System.out.println("\nThis class derives base class 1");
+        System.out.println("Base class variable value : "+ base_value);      // accessing base class variable
+        System.out.println("Present class variable value : "+derived_value);
+    }
+}
+
+class derived_class extends base_class2    
+{
+    int derived_value1;
+    derived_class(int base_val1,int base_val2,int der_val)   // constructor
+    {
+        super(base_val1,base_val2);
+        derived_value1 = der_val;
+    }
+    void display()
+    {
+       System.out.println("\nThis class derives base class 2 which inherits base class 1");
+        System.out.println("Base class 1 variable value : "+ base_value);      // accessing base class variable
+        System.out.println("Base class 1 variable value : "+ derived_value);      // accessing base class variable
+        System.out.println("Present class variable value : "+derived_value1);
+    }
+}
+public class Main
+{
+	public static void main(String[] args) {
+	    
+		derived_class obj = new derived_class(10,20,30);  // creating derived class object
+		obj.base_display();
+		obj.display();
+	}
+}