Private variable problem

[Joseph yan]

Hi All,

I want to access a varible form my super class. But i am having problem to access that.

Below is my code :

public class A
{
  Private int price=0;
 
} 

Public class B extends A
{

 public int getPrice()
   {
     return price;

   }
 
}

If i declare varible as 'Private' then i am not able to access it but when i declare it as 'Protected' then it is accesible.

I dont want to break the encapsulation.

How can i access it when it is declared as Private.

am i undersatnding correct it or i am doing something wrong ?

Please shed some light on it.

Thanks
Joseph

[Paul Sturrock]

You will need to change A to provide access either by making the variable protected or by adding an accessor method e.g. :

public class A {
   private int price=0;

   public int getPrice() {
        return price;
   }

} 

[Vivek Singh]

You can use getters & setters to access that variable.

[Joseph yan]

Thanks for your replies ..

How do i do with getter and setter ?

Can you please provide some example .

Please note only problem is i dont want to break encapsulation.

if i will use protected then varible is visible out side the class.

[John de Michele]

Joseph:

You probably just want a getter. Just move your getPrice() method from class A to class B. Extending classes already breaks encapsulation. If encapsulation is what you are concerned about, you should probably use composition rather than inheritance.

John.

[Campbell Ritchie]

Joseph yan wrote:How do i do with getter and setter ?

Can you please provide some example .

Paul Sturrock has provided an excellent example which maintains encapsulation.