class Person {
String name;
Person partner;
}
public class Main {
public static void main(String[] args) {
Person suiseiscoach = new Person();
System.out.println(suiseiscoach.partner.name);
}
}
Exception in thread "main" java.lang.NullPointerException
at Main.main(Main.java:8)
找不到的意思:((((

:(