相关代码：package com.rocky.test;

import com.rocky.entity.Goods;

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

public class GoodsReflectTest {
    public static void main(String[] args) {
        try {
            Class goodsClass = Class.forName("com.rocky.entity.Goods");
            Constructor constructor=goodsClass.getConstructor(new Class[]{
                    Integer.class, String.class, Float.class, String.class});

            Goods goods1 = (Goods) constructor.newInstance(new java.lang.Object[] {10, "手机", 3000, "超长待机"});
            Method method = goodsClass.getMethod("display", new Class[]{String.class});
            Goods goods2=(Goods) method.invoke(new Object[] {"haha"});
            //Method method=goodsClass.getMethod("display",String.class);
        } 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();
        }

    }
}

相关截图：

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