TestSuperToSubclass2

public abstract class TestSuperToSubclass {

    public static void main(String[] args) {
        final TestSuperToSubclass instance = new SubClass();
        instance.superClassMethod();
    }

    protected abstract String fetchValue();

    private void superClassMethod() {
        System.out.println(this.fetchValue());
    }
}

class SubClass extends TestSuperToSubclass {

    private String field = "Test value.";

    @Override
    protected String fetchValue() {
        return field;
    }
}