java swing布局嵌套

小菜一枚，刚接触Java，想写个注册界面，但却遇到一个奇怪问题：代码如下： {代码...} 主要思路：一个主Jpanel，边界布局5个子Panel，东西南北中最后将主Panel加入Container中，但最后执行结果，F...

From [Javadiscussion group] 2017-04-17 17:54:45 0  2  1237

java - HTML邮件有多出来的空白区域，如何处理？

用java写的发送HTML邮件，样式都已经把边距设置为0了，但是还是有大块的空白，这个要怎么去掉呢？

From [Javadiscussion group] 2017-04-18 10:52:17 0  1  1233

java - I deleted the svn code locally and re-imported it from the remote repository. It prompted me that it already exists.

(www.sf.gg) is China's leading developer technology community. We hope to provide a pure, high-quality technic...

From [Javadiscussion group] 2017-06-28 09:22:06 0  4  1232

java - Which expert has implemented the attendance and punch-in positioning function? Please give me some guidance

Which expert has implemented the attendance and punch-in positioning function? Please give me some advice? It ...

From [Javadiscussion group] 2017-05-27 17:40:46 0  1  1232

How should the database be designed for dynamic forms?

The requirement is to enter form information in the background management interface, stipulate which forms (ca...

From [Javadiscussion group] 2017-05-17 10:07:19 0  4  1232

java - I would like to ask, can a default value be specified when @PathVariable is empty?

{Code...} If id is a non-required parameter and can be empty, how should it be handled? It can be given a defa...

From [Javadiscussion group] 2017-05-17 10:06:50 0  2  1232

java - spring-data-mongo的mongoTemplate在spring的taskExecutor中异步执行异常

测试程序如下： {代码...} 执行结果： {代码...} 结果说明： 主线程执行时，mongoTemplate可以正常的查询出user的内容，但是在taskExecutor开启的子线程中，仅仅输出了当前的线程名，查询及...

From [Javadiscussion group] 2017-04-18 10:00:23 0  0  1229

java - After idea creates a multi-modules project, tomcat fails to start

After my project directory is created, it is as shown in the figure below: But after starting tomcat, an error...

From [Javadiscussion group] 2017-06-30 09:52:52 0  2  1218

java - 运行eclipse出现问题?

安装adk之后写的第一个java程序没有问题.但是下载eclipse之后运行eclipse之后就会报错,如下:JVM terminated. Exit code=1/usr/bin/java-Dosgi.required...

From [Javadiscussion group] 2017-04-18 10:20:46 0  2  1215

Qiniu Cloud Storage-Excuse me! How to use JAVA to obtain Qiniu "space domain name" (default domain name for external links)

Please ask everyone! How to use JAVA to obtain Qiniu's "space domain name" (default domain name for ...

From [Javadiscussion group] 2017-07-05 10:02:19 0  2  1214

java - There is a very strange problem when using <%= %> to obtain data on a .jsp page

When jumping to a jsp page and using &lt;%=%&gt; to get data into the form, the console reports an err...

From [Javadiscussion group] 2017-06-12 09:19:19 0  1  1214

java完全限定名是什么

在学习java过程中遇到了下面的定义，能够帮忙解释吗？ 实例变量可以直接通过变量名访问。但在静态方法以及其他类中，就应该使用完全限定名：ObejectReference.VariableName。

From [Javadiscussion group] 2017-04-18 10:45:52 0  2  1214

java - What is the best way to perform permission verification in a distributed system?

As the title states, in the project, there is a separate system as the permission system. The current approach...

From [Javadiscussion group] 2017-06-30 09:55:01 0  3  1212

java - Distributed transaction processing solution

Do you need distributed transactions when deploying hibernate on multiple web servers to operate the database?...

From [Javadiscussion group] 2017-06-23 09:14:37 0  1  1212

java - Spring Security开启Session并发控制后如何防止删除同用户名的remember-me固化信息？

spring-security.xml文件中，开启固化remember-me信息。 {代码...} 开启session并发控制 {代码...} 以同一用户名分先后在两个浏览器中登录。 {代码...} 第一个登录的sess...

From [Javadiscussion group] 2017-04-17 15:30:05 0  1  1212