No enclosing instance of type test is accessible. Must qualify the allocation wi

[size=x-small]No enclosing instance of type test is accessible. Must qualify the allocation with an enclosing instance of type test (e.g. x.new A() where x is an instance of test).[/size]

package com.liqi.mytest;

import java.util.HashSet;

public class test {

public static void main(String[] args) {

HashSet<Person> set = new HashSet<Person>();
Person p1 = new Person("张三");
Person p2 = new Person("张三");
set.add(p1);
set.add(p2);
System.out.println(set.size());
}

class Person {
String name;

public Person(String name) {
this.name = name;
}

public Person() {

}

@Override
public int hashCode() {
int code = super.hashCode();
System.out.println("hashCode琚墽琛?" + code);
return code;
}
}
}

  静态类不能调用非静态内部类的构造方法，需要将某个内部类修饰为静态类，然后才能够在静态类中调用该类的成员变量与成员方法。class Person前加static即可