java - 绑定(bind)不匹配 : The type MyClass1 is not a valid substitute for the bounded parameter <T extends Comparator<T>> of the type Person<T>

Question

我收到错误:::绑定(bind)不匹配:类型 MyClass1 不是有界参数 <T extends Comparator<T>> of the type Person<T> 的有效替代品

import java.util.Comparator;


public class Test
{

    public static void main(String[] args)
    {
        Person<MyClass1> person2 = new Person<>(); // Bound mismatch: The type MyClass1 is not a valid substitute for the bounded parameter <T extends Comparator<T>> of the type Person<T>
    }
}



class MyClass1<T extends Comparator<T>> implements Comparator<T>
{

    @Override
    public int compare(T o1, T o2)
    {
        return 0;
    }
}



class Person<T extends Comparator<T>>
{

}

Answer 1

要求是 MyClass1需要匹配T extends Comparator<T> .

对于这种情况，其声明应为 class MyClass1 extends Comparator<MyClass1> .