intellij-idea - In Intellij java development, there are "s:" words before the string parameters of some functions. What does it mean?

This s: is not part of the string parameter, it is a marker added by IDEA itself. If you use the mouse to copy...

From [Javadiscussion group] 2017-05-17 10:07:07 0  1  1086

idea 创建maven项目一直失败，什么原因？build一直不行。。

    D:\software\jdk1.8.0_60\bin\java "-Dmaven.home=D:\software\idea\IntelliJ&nbs...

From [Javadiscussion group] 2016-11-05 11:33:30 0  1  1086

java - 读取.properties配置文件 空指针异常

碰到一个properties的资源文件，读取报空指针，什么原因？我使用下面2中方式读取，都是空指针。 {代码...} Exception: {代码...}

From [Javadiscussion group] 2017-04-18 09:16:43 0  3  1083

Java - Looking for an explanation of the following algorithm

It is known that the linear table A of length n adopts a sequential storage structure. Please write an algorit...

From [Javadiscussion group] 2017-07-05 10:26:05 0  2  1081

java - spring 中的各种注解，我们怎么找到他对应的处理类，例如@conditon

在看spring 开发文档时，有很多的注解，但是注解的处理逻辑应该是在处理类中，怎么找

From [Javadiscussion group] 2017-04-18 10:52:09 0  2  1080

java - Android 弱网络环境下与服务器交互怎么实现？？？

现在项目上有这么个需求，客户拿着APP去一个深山老林里(或者去一个偏僻的村庄)去和核查情况，网络情况不是很好，有可能是2G网络 也有可能时刻断网，但是他要通过APP与服务器交互了，首先是登录就要与服务器交互，...

From [Javadiscussion group] 2017-04-18 10:30:03 0  11  1080

java - 在前后端分离的项目中，如何验证前端请求数据是否合法

最近在学习Vue，无意中爱上了前后端分离，但是有几个地方不知道怎么实现 用户登入，难道也是和以往一样给一个session还是有什么更好的解决方案 （如果api服务器和放前端页面的服务器不是同一台，而且域名也不一样...

From [Javadiscussion group] 2017-04-18 10:45:05 0  5  1079

Why is the calculation of -1 wrong?

Why is the calculation of -1 wrong?

From [Javadiscussion group] 2020-08-29 22:28:02 0  0  1078

java - Does ehcache cache use virtual machine memory?

Does ehcache cache use virtual machine memory or other memory? Is the bottom layer of ehcache map? How does he...

From [Javadiscussion group] 2017-06-23 09:13:46 0  1  1078

java - centos服务器CPU被GC task占满，程序无内存溢出

环境：服务器为centos，2个8核16线CPU，内存64G，jdk版本1.7.0_67 问题描述：服务器部署的java应用，jvm堆内存为8G，启动一段时间后CPU占用飙升到2300% jstack查看获得如下信息: ...

From [Javadiscussion group] 2017-04-18 10:31:17 0  0  1078

Properties collection

What is the difference between the list method and the store method of the properties object? They seem to be ...

From [Javadiscussion group] 2020-09-13 21:51:10 0  1  1077

java - jacoco 统计junit单元测试对项目代码的测试覆盖率为0?

单元测试可以跑过但是最终覆盖率结果为0

From [Javadiscussion group] 2017-04-18 10:45:25 0  1  1077

How to sort results of sum of two columns using spring data jpa

Hello everyone, I currently have a requirement to find the sum of two columns in a table and then sort the res...

From [Javadiscussion group] 2017-05-27 17:41:27 0  1  1076

java - 在InputStream一次执行完毕后，会自动关闭吗？

在第一次对该方法调用时，是正确的，但是再次执行时，就会显示输入流关闭，错误提示是在39行

From [Javadiscussion group] 2017-04-18 10:44:59 0  8  1076

java - unit testing, how to let spring manage transactions without polluting the database

I am trying to use spring and junit to test the DAO method. I have seen some methods on the Internet that use ...

From [Javadiscussion group] 2017-06-12 09:25:30 0  2  1075