已知有如下代码 //Animal.java public class Animal{ public Animal(){ System.out.println("Animal"); } public void display(){ System.out.println("Animal world"); } } //Tiger.java public class Tiger extends Animal{ public Tiger(){ super(); System.out.println("Tiger"); } public void display(){ System.out.println("Tiger world"); } } //Test.java public class Test{ public static void main(String... args){ Tiger tiger = new Tiger(); tiger.display(); } } 下列说法正确的是?