Java判断参数的类型

import java.util.ArrayList;

import java.util.List;



public class TypeTest {

    public static void main(String[] args) {

        List list = new ArrayList();

        list.add(10);

        list.add("abc");



        for (Object obj : list) {

            if (Integer.class.isInstance(obj)) {

                System.out.println("Number!");

            } else if (String.class.isInstance(obj)) {

                System.out.println("String!");

            }

        }

    }

}

Number!

String!