求解答案为什么输出是father

Question

public class Test extends Father{
private String username="test";

public static void main(String[] args) {
    Test test =new Test();
    System.out.println(test.getUsername());
}

}

class Father{
private String username="father";

public String getUsername() {
    return username;
}

}

Answer 1

所以问题是什么。。。