获取运行时类结构

package com.sympa.lesson01;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class ReflectionTest {

    public static void main(String[] args) throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException {

        Class<Person> clazz = Person.class;

        //newInstance：创建对应运行时类对象
        Person person = clazz.getDeclaredConstructor().newInstance();
        System.out.println(person);

        //获取运行时类的属性结构
        Field[] fields = clazz.getDeclaredFields();
        for(Field f : fields){
            System.out.println(f);
        }

        //获取运行时类的方法结构
        Method[] methods = clazz.getDeclaredMethods();
        for(Method m : methods){
            System.out.println(m);
        }

        Method show = clazz.getMethod("show");

        //…………………………
    }
}