git checkout specific version failed

git clone https://github.com/lnas01/rel...git checkout ff0bb84 error: pathspec 'ff0bb84' did not match any fil...

From [Javadiscussion group] 2017-06-14 10:52:28 0  1  801

java - HDFS读取excel内容出现乱码

1.使用poi生成excel，上传hdfs2.当有需要的时候，去下载该文件3.下载文件是通过rest接口4.接口中通过hdfs api读取hdfs上的excel文件内容，并转成字符串，响应到客户端 图1 通过hdfs的g...

From [Javadiscussion group] 2017-04-18 09:49:02 0  2  801

java - idea Project Structure中的Dependencies与Libraries区别是什么?

Dependencies中的Export选项有什么作用？

From [Javadiscussion group] 2017-04-17 17:59:28 0  1  801

java - 调整了<input>输入框的大小之后，页面的输入框重叠了！

{代码...}

From [Javadiscussion group] 2017-04-17 16:13:13 0  1  801

java - web service除了rest风格之外，还有什么其他风格？

web service除了rest风格之外，还有什么其他风格？

From [Javadiscussion group] 2017-04-17 14:37:51 0  3  800

求教：javadoc会输出些什么？

求教：javadoc会输出些什么？

From [Javadiscussion group] 2017-02-28 09:11:06 0  2  800

CAS issue with AtomicInteger - Stack Overflow

{Code...} This is an auto-increment operation, definition: CAS has 3 operands, memory value V, old expected va...

From [Javadiscussion group] 2017-06-28 09:24:31 0  1  799

java - Unexplained prompt in WeChat applet (image loading failed)

VM2900:2 Failed to load image http://1372249567.debug.open.... : the server responded with a status of 404 (HT...

From [Javadiscussion group] 2017-06-12 09:22:33 0  2  799

php - I have a question about type conversion. When converting float type to int, I thought there might be a problem, but the result was not?

For example, if I convert the float type 2.0000000000 into an int, the underlying storage should be 1.99999999...

From [Javadiscussion group] 2017-06-12 09:19:20 0  6  799

java - For the swap function in the Collections class, why does the source code need to define a new final List variable l to point to the incoming list?

The source code of JDK1.7 is as follows: {Code...} What is the meaning of the sentence final List l = list? Wo...

From [Javadiscussion group] 2017-05-17 10:05:33 0  1  799

java中在哪些情况下需要使用泛型通配符如：? extends T 或者 ? super T

至于什么是泛型通配符，我是知道的，但是不知道具体在项目里的使用场景，比如哪些情况下，我们创建的类或者接口需要用到泛型通配符呢

From [Javadiscussion group] 2017-04-18 10:49:24 0  2  799

java - Could not initialize class NewKotlinActivityAction ？

更新android Studio以后打开报错： Cannot load project: com.intellij.ide.plugins.PluginManager$StartupAbortedException: c...

From [Javadiscussion group] 2017-04-18 10:48:18 0  1  799

redis - 如何用java实现基于JedisCluster对象的连接池？

{代码...} {代码...} 拜谢！！！

From [Javadiscussion group] 2017-04-18 10:05:46 0  1  799

txt uses utf8 to store numbers, and java reads txt numbers with spaces in front of them.

excel ---&gt; txt txt ---&gt; utf8 [The first column of txt is a number, such as: 15484] {code...} jav...

From [Javadiscussion group] 2017-05-27 17:40:37 0  2  798

java - c/c++ 指针指向 数组和数据类型 判断时会不会有二义性？

{代码...} 两个理解：1.rowlist是个动态数组指向一大块内存，数组里的元素存储着指向LinkList&lt;int&gt;链表的地址。即rowlist是指针数组。如图一 2.rowlist指向一...

From [Javadiscussion group] 2017-04-18 10:53:58 0  2  798