list集合有泛型情況添加多種類型資料

package 反射;

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

public class ReflectDemo {
	
	public static void main(String[] args) throws Exception {
		ArrayList<String> arrayList = new ArrayList<String>();
		arrayList.add("a");
		arrayList.add("b");
		arrayList.add("c");
		System.out.println(arrayList);
		
		// 利用反射添加數字
		Class<? extends ArrayList> clazz = arrayList.getClass();
		Method method = clazz.getMethod("add", Object.class);
		method.invoke(arrayList, 123);
		System.out.println(arrayList);
	}
}