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JAVA“无法启动该应用程序”的解决办法 - Python - 清泛IT社区，为创新赋能！
调用虚拟控制台时出现了如下的错误，“无法启动该应用程序”，如下：
是因为JAVA的安全设置问题，进入C:Program Files (x86)Javajre7in，打开javacpl.exe，将安全级别设置为“中”即可。
文本导出excel，或者导出excel方式，研究一下。 - 微思想区 - 清泛IT论坛，...
... ... xcel-pdf-csv/172431列表转CSV，文件管理器存储COM，开源库Java：https://blog.51cto.com/AmbitionGarden/7062348Java生成Excel的几种方式
Apache POI：Apache POI是一个流行的用于处理Microsoft Office文档的Java库。它提供了一组API，可以用于创建、读取...
android ndk： 代码可以在C++，c上实现。java可以直接做调用。 - 微思想区 ...
android ndk：
代码可以在C++，c上实现。java可以直接做调用。
Invoke: no method named `…………’ in class java.lang.Boolean - App I...
...最新版即可。
Invoke: no method named `ShowTextDialog’ in class java.lang.Boolean
来自英文社区：https://community.appinventor.mi ... ang-boolean/17544/5
【拍照图片处理】Attempt to invoke virtual method 'boolean android.grap...
...roid.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference
图片大致的处理流程是：先TaifunImage压缩尺寸，在Base64化，调在线api进行识别。
通过调试发现问题是出现在 图片的Resize/Base64化...
Attempt to invoke virtual method 'boolean android.graphics.Bitmap.comp...
...roid.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference
原因：调用 TaifunImage 时给定的图片路径为空导致的。
解决：指定有效的图片路径，或者拍照返回的图片路径，或者图像选择器...
Java: using switch statement with enum under subclass
...te that I'm much more familiar with enums in C# and it seems like enums in java is a quite mess.
6 Answers
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How is an overloaded method chosen when a parameter is the literal null value?
...s fine:
String x = null;
The String overload here is chosen because the Java compiler picks the most specific overload, as per section 15.12.2.5 of the JLS. In particular:
The informal intuition is that one method is more specific than another if any invocation handled by the first method cou...
How to permanently export a variable in Linux?
...e following locations:
System-wide persistent variables in the format of JAVA_PATH=/usr/local/java store in
/etc/environment
System-wide persistent variables that reference variables such as
export PATH="$JAVA_PATH:$PATH" store in
/etc/.bashrc
User specific persistent variables in the format o...
Biggest differences of Thrift vs Protocol Buffers?
...ant difference are the languages supported by default.
Protocol Buffers: Java, Android Java, C++, Python, Ruby, C#, Go, Objective-C, Node.js
Thrift: Java, C++, Python, Ruby, C#, Go, Objective-C, JavaScript, Node.js, Erlang, PHP, Perl, Haskell, Smalltalk, OCaml, Delphi, D, Haxe
Both could be exte...