ArrayList<br>list = new ArrayList<br>();String 유형의 객체를 이 범용 Integer의 ArrayList에 저장합니다.

package com.heima.test;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;

public class Test2 {

    /** ArrayList<Integer> list = new ArrayList<Integer>();  Integer   ArrayList   String  。 * @param args * @throws SecurityException * @throws NoSuchMethodException * @throws InvocationTargetException * @throws IllegalArgumentException * @throws IllegalAccessException */
    public static void main(String[] args) throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
        ArrayList<Integer> list = new ArrayList<Integer>();
        Class clazz = ArrayList.class;
        Method me = clazz.getMethod("add", Object.class);
        me.invoke(list, "heima");
        System.out.println(list);
    }

}