runtime

Java realtime writing file when it's opened

由 倾然丶 夕夏残阳落幕 提交于 2019-12-14 03:36:40
问题 I want to write data to file when it's opened, but it doesn't work. Calendar getTime works nice, System.out.println() proves this. Please, any idea, what's wrong...? Main class: public static void main(String[] args) throws IOException { // TODO code application logic here CurrentTime ct = new CurrentTime(); } CurrentTime class: public class CurrentTime { public OutputStream output; public InputStream input; public Process npp; CurrentTime() throws IOException { Timer t = new Timer(); npp =

CentOS 7安装.NetCore

由 六眼飞鱼酱① 提交于 2019-12-14 00:47:41
打开终端并运行以下命令。 sudo rpm -Uvh https://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm 安装.NET Core SDK 更新可用于安装的产品，然后安装.NET Core SDK。在您的终端中，运行以下命令。 sudo yum install dotnet-sdk-3.1 安装ASP.NET Core运行时 更新可用于安装的产品，然后安装ASP.NET运行时。在您的终端中，运行以下命令。 sudo yum install aspnetcore-runtime-3.1 安装.NET Core运行时 更新可用于安装的产品，然后安装.NET Core运行时。在您的终端中，运行以下命令。 sudo yum install dotnet-runtime-3.1 如何安装其他版本 示例： 安装 .NET Core 2.2 SDK: dotnet-sdk-2.2 安装 ASP.NET Core 3.0 runtime: aspnetcore-runtime-3.0 安装 .NET Core 2.1 runtime: dotnet-runtime-2.1 来源： CSDN 作者： HueiFeng 链接： https://blog.csdn.net/qq_27843785

Ocaml - polymorphic print and type losing

由 匆匆过客 提交于 2019-12-14 00:29:55
问题 There is series of functions like print_int, print_endline and Printf in OCaml. I can't do something like: let n = 10 in print n;; (* And I haven't to change `print` in case type of `n` changed *) That is polymorphic print like in Java, C#, Python and others. Instead, we have C-like with type explicitly defined by programmer. So I think that OCaml losing type information during compilation and doesn't have it at runtime, right? And this is the reason why we need mli files also? EDIT: I'm

how to calculate run time

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-13 22:09:06
问题 when calculate run time of any algorithm ,we always ignore the constant such 3n+2 =O(n) why and why we ignore the run time of simple statements. and what difference between run time and execution time? 回答1: The Big O notation is an asymptotic notation which got the idea from mathematics describing the behaviour of function in "limits". The simple way of looking at asymptotic notation is that it discards all the constant factors in a function. Basically, a n^2 will always be bigger that b n if

How to call external executable file from java

由 懵懂的女人 提交于 2019-12-13 21:15:14
问题 I am new to java... I have a problem while trying to call external executable file from java... Runtime rt = Runtime.getRuntime(); Process pr = rt.exec("cmd /c terminal.exe"); while trying to call this getting below error.. Exited with error code 1 回答1: Are you sure your terminal.exe is in the Windows path? You can try and replace it with notepad.exe , for example, to see if it works. 来源： https://stackoverflow.com/questions/5934341/how-to-call-external-executable-file-from-java

How to register my app so that it appears in the phote edit list in windows phone 8.1 runtime

由 空扰寡人 提交于 2019-12-13 21:08:23
问题 How can I register my windows phone 8.1 runtime app so that it appears in the poto edit list? The only way I see is to create an app for windows phone 8.0 silverlight (there is a template in VS 2013) then edit the wmappmanifest.xml and then upgrade the project to wp81. But I think there must be another way to achieve that directly in a wp81 runtime project. Does anyone know how to do that properly? 回答1: According to MSDN article Migrating your Windows Phone 8 app to a Windows Runtime XAML app

Viewing ACCDB with Access 2010 runtime when Access 2007 is installed

由 萝らか妹 提交于 2019-12-13 21:02:38
问题 I'm hoping someone can either tell me what I'm doing wrong correct my flawed understanding of how this works and explain why it's not possible. I've been developing a fairly basic database/program for a client in Access. They have Office 2007, I have Office 2010. Initial test of creating a database in 2010 (in "2007" format) and opening the forms and data in Office 2007 showed no problems. Fast forward 3 weeks. I've sent them a recent copy for approval and they can't open it. Unrecognised

Reference to Command Buttons Added During Runtime with VBA in Excel

由 与世无争的帅哥 提交于 2019-12-13 20:31:21
问题 During runtime, the user is able to add any number of ActiveX command buttons to Sheet 1. I need to have a reference to these new buttons with VBA, but am not sure how. I know a logical progression which the button names will exhibit: ex. (Node#x2)-2=CommandButton#=i I need to somehow refer to these newly created buttons, I'm thinking is along the lines of this: Sheet1.Controls("CommandButton" & i).Select If anyone knows the correct syntax or an alternate method please advise! UPDATE Public

Mounting and untar'ing a file in Java

由 一曲冷凌霜 提交于 2019-12-13 17:56:51
问题 I'm currently working on a web application that involves mounting a drive and extracting a tar.gz file, all in Java. Since the application runs in a linux environment, I figured I'd try using unix commands like "mount" and "tar". Runtime runtime = Runtime.getRuntime(); Process proc; String mountCommand = "mount -t cifs -o username=..."; String extractCommand = "tar xzf ..." proc = runtime.exec(mountCommand); proc.waitFor(); proc = runtime.exec(extractCommand); proc.waitFor(); Running the

Java - Runtime.getRuntime().exec() what's going on?

由 ╄→гoц情女王★ 提交于 2019-12-13 15:09:46
问题 I have problem with Runtime.exec() in Java My code: String lol = "/home/pc/example.txt"; String[] b = {"touch", lol}; try { Runtime.getRuntime().exec(b); } catch(Exception ex) { doSomething(ex); } It's working good but when I trying changle variable "lol" files doesn't create in hard disk for instance: String lol = x.getPath(); where getPath() returns String What should I do ? Thanks for your reply :) 回答1: Here is the solution to your problem . I faced a similar problem and this worked for me
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