java - public interface - private menthods
.... warning - I'm more familiar with C++ but I'm learning Java for new
project. I'll try hard not to troll. ...
Say I have a class that exposes some interfaces. The intent is that
methods may be overridden by clients but only the class that defines the
interfaces are allowed to call them.
In C++ you would do it like so:
friend class X;
virtual void = 0;
void YConsumer( Y & y )
class YClient : public X::Y
void FuncOnlyForX() // override X::Y
std::cout << "THIS IS YClient\n";
X::Y & y = YClient();
y.FuncOnlyForX(); // error
x.YConsumer( y ); // OK
I tried this in Java but the compiler keeps on getting in the way:
public class X
public interface Y
private void FuncOnlyForX(); // javac saya illegal use of private
public void YConsumer( Y y )
public class Yclient extends X.Y
So, how do you get java to enforce use visibility policy on interfaces ?
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