Say that I'm wrong, but I'm sure you can instanciate abstract classes

Question

You just need to define the abstract methods while instanciating:

abstract class A
{
absract void print(String val);
}

public static void main(String[] args)
{
A obj = new A(){
print(String val)
{
System.out.println(val);
}
};
}

Answer 1

Well, its nothing new... They are called anonymous classes and you can use with concrete/abstract classes and interfaces