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Home » Java » Inheritance » Inheritance Protected Members Java Example
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Inheritance Protected Members Java Example

By Dinesh Thakur

A protected field or method in a public class can be accessed directly by all classes within the same package and its subclasses even if the subclasses are in different packages. It is more restrictive than default (or package) access.

class Num //super class 
{
      protected int x,y; //protected Members
      Num(int a, int b)
      {
       x=a;
       y=b;
      }
      public void showxY()
      {
   
        System.out.println("x = " + x);
        System.out.println("y = " + y);
       }
}
    class Result extends Num
 {
      private int z ;
      Result(int a,int b)
      {
        super(a,b);
      }
      public void add()
      {  
        z = x+y;
      }
      public void show()
      {
       System.out.println("z = " + z);
      }
 }
    public class ProtectedInheritance
    {
        public static void main(String[] args)
       {
           Result d = new Result(5,6);
           d.showxY();
           d.add();
           d.show();
       }
   }

Inheritance Protected Members Java Example

In the above program, we create a superclass Num having protected fields x and y and a method showXY (). Then we derive a/subclass Result ,from Num which contains its own data field z and two methods add () and showZ(). The data fields x and y of superclass Num are declared as protected because we want that the method add () of the subclass can access it directly. In main () , we instantiate the object of subclass Result and initialize the fields x and y of superclass Num with values 5 and 6 respectively using a call to the constructor. Then the method add () is called, to calculate the sum of x and y and display the result using showZ() method.

You’ll also like:

  1. Example of Inheritance in Java
  2. Implementing Inheritance in Java Example
  3. Private Inheritance in Java Example
  4. Multiple Inheritance in Java with Example
  5. Example of Multilevel Inheritance in Java
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About Dinesh Thakur
Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

Dinesh Thakur is a Freelance Writer who helps different clients from all over the globe. Dinesh has written over 500+ blogs, 30+ eBooks, and 10000+ Posts for all types of clients.


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