初冬夏末

package com.example.csv; import java.util.ArrayList; import java.util.List; public class Test { volatile List<Integer> list =new ArrayList<>(); public void add(int i){ ...

1.在maven配置文件pom.xml中添加插件 <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaL...