我看书中运行的结果是 i am grandfather 但是我实测结果是i am father
是由于JDK8 的缘故还是怎么呢？ 求大神指点

package lookup;

import static java.lang.invoke.MethodHandles.lookup;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodType;

class GrandFather{
void think() {
System.out.println("i am grandfather");
}
}

class Father extends GrandFather{

void think() {
    System.out.println("i am father");
}

}

class Son extends Father{

void think() {
    try {
        MethodType mt = MethodType.methodType(void.class);
        MethodHandle mh = lookup().findSpecial(GrandFather.class, "think", mt ,getClass());
        
        mh.invoke(this);
    } catch (Throwable e) {
        
    }
}

}

public class Test {

public static void main(String[] args) {
    new Son().think();  
}
    

}