OverridableFromConstructor.java

public abstract class OverridableFromConstructor {
    OverridableFromConstructor() {
        test();
    }

    protected abstract void test();

    static class SubClass extends OverridableFromConstructor {
        private int i = 10;

        @Override
        protected void test() {
            System.out.println("You might think this will print 10, but it will print: " + i);
        }
    }

    public static void main(String[] args) {
        new SubClass();
    }
}