package com.imooc.reflect.zy;

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

public class ReflectSample {
public static void main(String[] args) {
try {
            Class goodsClass = Class.forName("com.imooc.reflect.zy.Goods");
            Constructor constructor = goodsClass.getConstructor(new Class[]{
                    Integer.class, String.class, Float.class, String.class
            });
            Goods goods = (Goods) constructor.newInstance(new Object[]{
001, "mooc手机", 3999.0f, "6.58英寸大屏，超长待机"
            });
            System.out.println(goods);
            Method xgDesp = goodsClass.getMethod("xgDesp", String.class);
            xgDesp.invoke(goods, new Object[]{
"6.58英寸大屏，超长待机,超级快船，6300万高清像素"
            });
            System.out.println(goods);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }

    }
}

​

package com.imooc.reflect.zy;

public class Goods {
private Integer id;
    private String name;
    private Float price;
    private String desp;

    public Goods() {

    }

public Goods(Integer id, String name, Float price, String desp) {
this.id = id;
        this.name = name;
        this.price = price;
        this.desp = desp;
    }

public Integer getId() {
return id;
    }

public void setId(Integer id) {
this.id = id;
    }

public String getName() {
return name;
    }

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

public Float getPrice() {
return price;
    }

public void setPrice(Float price) {
this.price = price;
    }

public String getDesp() {
return desp;
    }

public void setDesp(String desp) {
this.desp = desp;
    }

@Override
    public String toString() {
return "Goods{" +
"id=" + id +
", name='" + name + '\'' +
", price=" + price +
", desp='" + desp + '\'' +
'}';
    }
public void xgDesp(String desp) {
this.desp = desp;
        System.out.println(name + "手机更改后的商品描述为：" + this.desp);
    }
}