package com.zhong.reflect.Entity;

public class Goods {
private String goodNo;
    private String goodName;
    private Float goodPrice;
    private String goodDesc;

    public Goods() {
    }

public Goods(String goodNo, String goodName, Float goodPrice, String goodDesc) {
this.goodNo = goodNo;
        this.goodName = goodName;
        this.goodPrice = goodPrice;
        this.goodDesc = goodDesc;
    }

public String getGoodNo() {
return goodNo;
    }

public void setGoodNo(String goodNo) {
this.goodNo = goodNo;
    }

public String getGoodName() {
return goodName;
    }

public void setGoodName(String goodName) {
this.goodName = goodName;
    }

public float getGoodPrice() {
return goodPrice;
    }

public void setGoodPrice(Float goodPrice) {
this.goodPrice = goodPrice;
    }

public String getGoodDesc() {
return goodDesc;
    }

public void setGoodDesc(String goodDesc) {
this.goodDesc = goodDesc;
    }

@Override
    public String toString() {
return "Goods{" +
"goodNo='" + goodNo + '\'' +
", goodName='" + goodName + '\'' +
", goodPrice=" + goodPrice +
", goodDesc='" + goodDesc + '\'' +
'}';
    }

public void display(String desc){
this.goodDesc=desc;
        System.out.println("商品描述更改为："+desc);
    }
}

package com.zhong.reflect.Test;

import com.zhong.reflect.Entity.Goods;

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

public class test {
public static void main(String[] args) {
try {
            Class goodsClass=Class.forName("com.zhong.reflect.Entity.Goods");
            Constructor constructor=goodsClass.getConstructor(new Class[]{
                    String.class,String.class,Float.class,String.class});
            Goods good=(Goods)constructor.newInstance(new Object[]{
"001","mooc手机",3999f,"6.58英寸大屏，超长待机"});
            System.out.println(good);
            Method method=goodsClass.getMethod("display",String.class);
            Goods desc=(Goods)method.invoke(good,"6.58英寸大屏，超长待机，超级快充，6400万高清四摄");
            System.out.println(good);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e){
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
    }

}