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2020-08-02通过反射向Integer数组中添加字符串

2020-08-02通过反射向Integer数组中添加字符串

作者: 智障猿 | 来源:发表于2020-08-12 16:10 被阅读0次
public class Demo {
    public static void main(String[] args) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        ArrayList<Integer> arrayList = new ArrayList<>();
        arrayList.add(15);
        Class<? extends ArrayList> aClass = arrayList.getClass();
        Method add = aClass.getMethod("add", Object.class);
        add.invoke(arrayList,"hello");
        add.invoke(arrayList,"world");
        System.out.println(arrayList);
    }
}

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