Question

I would like to do something like this:

Class A 
Class B extends A
Class C extends A

B b = new B();
C c = new C();

b->setField("foo");
c->getField; //return "foo"

Is it somehow possible to implement these classes?

I need it for persistance in hibernate, to make entity split into two entites and have each in its own table. And I need to have some fields same (id, some FK, some values). So I would like to set these fields in one subclass and have the same values in second subclass. All subclasses need to have/share exactly same value.

Any idea?

Answer 1

you can use below code:

public class A {

    private static String field;

    public static String getField() {
        return field;
    }

    public static void setField(String field) {
        A.field = field;
    }
}


public class B extends A{

}


public class C extends A{

}


public class Test {

    public static void main(String[] args){
        B.setField("Thank you"); // or 
           new B().setField("Thank you"); 

        System.out.println(C.getField()); // or
            System.out.println(new C().getField());

  // it will work for object and for class as well
    }
}

output : Thank you