uml - Java code automatically generates sequence diagrams

Recently I was looking at the code of an Android project. Since it is a 2-3 year old project, the amount of co...

From [Javadiscussion group] 2017-06-30 09:55:32 0  1  1414

java - 如何做到预览pdf但不允许下载

如何做到预览pdf但不允许下载

From [Javadiscussion group] 2017-04-18 10:32:24 0  3  1412

java - pdfbox有人提取过pdf里面的印章或者图片吗

见标题 以下是使用pdfbox提取pdf的文字，现在想提取pdf里面的印章，有朋友在线帮忙么 {代码...} 提取图片见代码：一般的图片可以提取，唯独pdf中是印章的时候提取不了 {代码...}

From [Javadiscussion group] 2017-04-18 10:24:31 0  0  1410

I did not use the drawing function, I did it by inserting slices. How can I use a two-dimensional array to save the coordinates of the chess pieces and the chess pieces, and then add the effect?

public void paint(Graphics g) { //The loop is horizontal for(int i=0;i<=19;i++) { //The loop is vertical fo...

From [Javadiscussion group] 2018-08-12 17:07:37 0  0  1405

java为什么比python运行效率高呢？

听说JVM是神器，来学习下？之前学了一段时间python，听很多人说java运行效率比python高多了，能知道为什么吗？

From [Javadiscussion group] 2017-03-02 17:33:20 0  2  1405

java - Stream.map()方法是保持原有顺序么？还是会重新排序呢？

在jdk 8中引入了Stream类，其中有map方法，请问map方法是否能够保持原有list的顺序，还是会对list进行重排序？？最好能有源码说明。。

From [Javadiscussion group] 2017-04-18 10:10:56 0  3  1404

The video cannot be viewed

http://www.php.cn/code/8789.html This video cannot be viewed

From [Javadiscussion group] 2018-07-08 14:39:48 0  1  1403

java - 使用springmvc上传图片报错already exists and could not deleted

使用springmvc上传图片报错，第二次上传同名文件会报图片already exists and could not deleted File targetFile = new File(path, changName...

From [Javadiscussion group] 2017-04-17 11:58:35 0  1  1403

java - How to force the app to go offline?

For example, if the web side deletes the user who is logging in on the app side, how can the app side user be ...

From [Javadiscussion group] 2017-06-28 09:23:31 0  6  1402

java - What do the parameters in idea git update project mean?

What does using Shelve come from and why when I use merge+using stash, my locally modified code will be delete...

From [Javadiscussion group] 2017-06-23 09:12:50 0  1  1400

javascript - How to set the avatar in the WeChat applet and solve the image path inside? I saved the path generated by the interface into the database, but it cannot be displayed after the second access.

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

From [Javadiscussion group] 2017-05-19 10:08:21 0  1  1400

java - IDEA checks out the project from SVN and runs it on tomcat. Please provide detailed process

I've been tinkering with ideas for the past two days, and I just started working not long ago. I used to do it...

From [Javadiscussion group] 2017-06-23 09:13:03 0  2  1398

关于Service层异常封装的问题

service层应该是抛出自定义异常，还是通用的Exception？比如：前台需要code、message、datacode：返回特定编码，比如0表示成功，1表示失败message：失败时返回错误信息data：如果是查询...

From [Javadiscussion group] 2016-11-12 10:35:23 0  3  1398

java - String s = new String("xyz");创建了几个String Object？

String s = new String("xyz");创建了几个String Object？

From [Javadiscussion group] 2017-04-18 09:32:25 0  3  1395

java - 微信开发网页授权

在授权成功的页面刷新一次就会出报错{"errmsg":"code been used, hints: [ req_id: Rwakxa0262th10 ]","errco...

From [Javadiscussion group] 2017-04-18 10:55:04 0  7  1392