Java interview question

Main.java

class Foo1 {
	String bar = "bar1";

	String getBar() {
		return this.bar;
	}

	void setBar(final String bar) {
		this.bar = bar;
	}
}

class Foo2 extends Foo1 {
	String bar = "bar2";

	@Override
	String getBar() {
		return this.bar;
	}
}

public class Main {
	public static void main(final String[] args) {
		final Foo2 foo2 = new Foo2();
		final Foo1 foo1 = foo2;

		foo2.setBar("foo1");
		System.out.println(foo2.bar);
		System.out.println(foo2.getBar());
		System.out.println(foo1.bar);
		System.out.println(foo1.getBar());

		foo2.bar = "foo2";
		System.out.println(foo2.bar);
		System.out.println(foo2.getBar());
		System.out.println(foo1.bar);
		System.out.println(foo1.getBar());
	}
}