java多线程环境下类初始化死锁?

Z时代
2024-01-10
分类：IT

今天在使用iead写tij中的动态代理的时候遇到这个问题:
图片描述
代码如下:

interface Null{}
public class Person
{
    public final String first ;
    public final String last ;
    public final String address ;
    public Person(String first, String last, String address) {
        this.first = first;
        this.last = last;
        this.address = address;
    }
    @Override
    public String toString() {
        return "Person: " + first + " " + last + " " + address ;
    }
    public static class NullPerson extends Person implements Null
    {
        private NullPerson()
        {
            super("None" , "None" , "None") ;
        }
    }
    public static final Person NULL = new NullPerson() ;
}