Java7, PHP 5.5, C++, C# .NET 4 :: Properties & Methods / LSP

gistfile1.java

// Java
/* *** test1 *** */

class A
{
    public String p = "from A";
    public String m()
    {
        return this.p;
    }
}
 
class B extends A
{
    public String p = "from B";
}
...
B b = new B();
System.out.println(b.m()); // from A

/* *** test2 *** */
class A
{
    public String p(){ return "from A"; }    
    public String m()
    {
        return this.p();
    }
}
 
class B extends A
{
    public String p(){ return "from B"; }
}
...
B b = new B();
System.out.println(b.m()); // from B

gistfile2.java

// PHP
/* *** test1 *** */

class A
{
    public $p = "from A";    
    public function m()
    {
        return $this->p;
    }
}
 
class B extends A
{
    public $p = "from B";    
}
 
$b = new B();
echo $b->m(); // from B
// >= v5.3 also available 'LSB' (for static bind), - e.g.: static::
// and self::

/* *** test2 *** */
class A
{
    public function p(){ return "from A"; }    
    public function m()
    {
        return $this->p();
    }
}
 
class B extends A
{
    public function p(){ return "from B"; }
}
 
$b = new B();
echo $b->m(); // from B

gistfile3.cpp

// C++
/* *** test1 *** */
class A
{
public:
    string p;
    A(): p("from A"){};
 
    string m()
    {
        return this->p; // p & (*this).p, etc.,
    };
};
 
class B : public A
{
public:
    string p;
    B(): p("from B"){};
};
...
B b;
TRACE(b.m()); //from A

/* *** test2 *** */
class A
{
public:
    virtual string p(){ return "from A"; };
    string m()
    {
        return this->p();
    };
};
 
class B : public A
{
public:
    string p(){ return "from B"; };
};
...
B b;
TRACE(b.m()); //from B

gistfile4.cs

// C#
/* *** test1 *** */
class A
{
    public String p = "from A";
    public String m()
    {
        return this.p;
    }
};
 
class B : A
{
    public String p = "from B";
};
...
B b = new B();
Console.WriteLine(b.m()); // from A

/* *** test2 *** */
class A
{
    public virtual String p(){ return "from A"; }
    public String m()
    {
        return this.p();
    }
};
 
class B : A
{
    public override String p() { return "from B"; }
};
...
B b = new B();
Console.WriteLine(b.m()); // from B