java反射入门，报错找不到路径

Question

为啥我反射他会报错，文件路径错了嘛
应该学成啥啊

package reflection;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Properties;

public class reflection {
    public static void main(String[] args) throws IOException, ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {
        Properties properties=new Properties();
        properties.load(new FileInputStream("src\\hello.txt"));
        String classfullpath=properties.get("classfullpath").toString();
        String method=properties.get("method").toString();
        System.out.println(classfullpath);
        System.out.println(method);
        Class cls=Class.forName(classfullpath);
        Object o=cls.newInstance();
        System.out.println(o.getClass());
        Method method1= cls.getMethod(method);
        method1.invoke(o);



    }
    public  class cat{
        private String name="招财猫";
        public void hi(){
            System.out.println("hi"+name);
        }
        public  void  cry(){
            System.out.println(name+"喵喵叫");
        }

    }
}

Answer 1

看下类的路径是不是包名+class名称的全路径，看下是不是前后有空格