ObjectFactory3

标签：String System name Person public ObjectFactory3 out

package com.shrimpking.t6;

/**
 * Created by IntelliJ IDEA.
 *
 * @Author : Shrimpking
 * @create 2024/9/12 18:06
 */
public class Person
{
    private String name;

    public Person(){
        this("匿名构造");
    }

    public Person(String name){
        this.name = name;
    }

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public void run(int meters){
        System.out.printf("%s跑了%d米%n",this.name,meters);
    }

    @Override
    public String toString()
    {
        return "Person{" + "name='" + name + '\'' + '}';
    }

    private void helper(){
        System.out.println("私有辅助方法");
    }
}

package com.shrimpking.t6;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;

/**
 * Created by IntelliJ IDEA.
 *
 * @Author : Shrimpking
 * @create 2024/9/12 18:48
 */
public class ObjectFactory3
{
    public static void main(String[] args)
    {
        try
        {
            Class<?> clz = Class.forName("com.shrimpking.t6.Person");
            //获取一个参数的构造方法
            Constructor oneArgCons = clz.getConstructor(String.class);
            Object obj = oneArgCons.newInstance("zhang");
            System.out.println(obj);

            //获取字段
            Field f = clz.getDeclaredField("name");
            // name字段是私有的
            f.setAccessible(true);
            f.set(obj,"wang");
            System.out.println(obj);
            f.setAccessible(false);

        }catch (Exception e){
            System.out.println(e.getMessage());
        }
    }
}

标签：String,System,name,Person,public,ObjectFactory3,out
From： https://blog.51cto.com/u_15356972/12016805