class forma1
{
public int mivar1;
public valExterna1;
constructor(){}
}
class forma2
{
public int mivar2;
public valExterna2
constructor(){}
}
class programa
{
forma1 f1 = new forma1();
forma2 f2 = new forma2();
f1.mivarExterna1 = f2.mivar;
f2.mivarExterna1 = f1.mivar;
}