package study.ref;
import study.test.Dog;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Scanner;
public class ClassLoad {
public static void main(String[] args) throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入key");
String key = scanner.next();
switch (key) {
case "1":
Dog dog = new Dog();
dog.hi();
break;
case "2":
Class cls = Class.forName("Person");
Object o = cls.getDeclaredConstructor().newInstance();
Method m = cls.getMethod("hi");
m.invoke(o);
System.out.println("ok");
break;
default:
System.out.println("do nothing..");
}
}
}
class Person {
public void hi() {
System.out.println("打招呼");
}
}
为什么找不到这个Person类?