Java反射案例（不要错过）

className=Student
methodName=sleep

import java.io.InputStream;
import java.lang.reflect.Method;
import java.util.Properties;
/**
 * @author tanglei
 * @date 2020/6/11 3:10 下午
 */
public class ReflectTest {
    public static void main(String[] args) throws Exception {
        Student s = new Student();
        Properties pro = new Properties();
        //获取配置文件的路径
        ClassLoader classLoader = ReflectTest.class.getClassLoader();
        InputStream is = classLoader.getResourceAsStream("pro.properties");
        pro.load(is);
        String className = pro.getProperty("className");
        String methodName = pro.getProperty("methodName");
        //加载类进内存
        Class cla = Class.forName(className);
        Object obj = cla.newInstance();
        //加载方法进内存
        Method method = cla.getMethod(methodName);
        method.invoke(obj);
    }
}