class="java" name="code">
package Jan2017;
import java.util.Arrays;
import java.util.List;
public class Ques0120 {
public static void main(String[] arg){
List<String> list = Arrays.asList("张三","李四");
list.add("王五");
System.out.println("列表的元素数量是:"+list.size());
}
}