代码没有提示错误，但是却运行不了
class Hobbits {
String name;
public static void main(String [] args) {
Hobbits [] h = new Hobbits[3];
int z = 0;
while (z < 4) {
z = z + 1;
h[z] = new Hobbits();
h[z].name = "bilbo";
if (z == 1) {
h[z].name = "frodo";
}
if (z == 2) {
h[z].name = "sam";
}
System.out.print(h[z].name + " is a ");
System.out.println("good Hobbit name");
}
}
}这个到底是什么原因呢？
