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The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I start a sub-process via a Runtime. I did a small example, with Runtime. So I think you'll need to get the process id and then send the appropriate signal to that process. This question appears to be very similar and points to various resources of use. After lots and lots of trials, I found a solution that I like now.

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Basically, it works like this: 1. Get the Process ID of the process that you started 2. Both steps are not completely straight forward, but nearly. For 1. Java does not provide any native way to get it. There are a number of threads discussing about how to do that best. I decided for one where you need to now the name see getProcessIDs in the code below. For 2. Again, Java does not do this.

There are different ways to do it e. I found the easiest one is to use a. For this, I modified SendSingal. You can get the sourcecode here: 1. Rename the exe to SendSignalC. Then run the code below and happily call e. Anyhow, the changes are simple and straight-forward if you have a running cpp-compiler Switch to Java 9 and save your time, Process has pid property now, check the documentation here for details.Error: You don't have JavaScript enabled.

Write a C program that does not terminate when Ctrl+C is pressed

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Please type your message and try again. This discussion is archived. I using java. I have the same question Show 0 Likes 0.

This content has been marked as final. Show 11 replies. Did you start the cmd via Runtime. That looks to be one long line that is "rem"'d out. Therefore this batch file does nothing as it is, it seems, except move you to the named directory and pause. In case I run cmd. Use destroy As far as I know, there is no 'String' you can send to cmd. Furthermore, it seems that you want to use cmd.

how to send ctrl c in java

Using Java to run OS commands isn't ideal anyway. Rather than explaining your solutionwhy don't you explain what it is you want to do? Otherwise, test fails on the second loop because I am at the wrong folder in "data" and not in "platform-tools". Otherwise, test fails on the second loop because I am at the wrong folder in "data" and not in "platform-tools" Again you are describing the solution or, more precisely, the actions that you would need if you were doing it yourself.

That isn't how Runtime. From what I understand 'adb shell' is an ash-compliant interactive shell, which is almost certainly a non-starter. What you might be able to do is write an ash shell script that executes: cd data.

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Then instead of running 'adb shell', run 'adb shell myDfuScript. However, the whole thing sounds incredible tortuous and brittle; and I expect there's a MUCH better and more Android-like solution. Also, doing firmware upgrades from Java sounds highly dangerous to me unless you're simply doing it to get the current version number.Posted by: admin February 27, Leave a comment.

I start a sub-process via a Runtime. I did a small example, with Runtime. How can I do that? This question appears to be very similar and points to various resources of use. After lots and lots of trials, I found a solution that I like now. Basically, it works like this: 1.

Get the Process ID of the process that you started 2. Both steps are not completely straight forward, but nearly.

how to send ctrl c in java

For 1. Java does not provide any native way to get it. There are a number of threads discussing about how to do that best. I decided for one where you need to now the name see getProcessIDs in the code below.

For 2. Again, Java does not do this. There are different ways to do it e. I found the easiest one is to use a. For this, I modified SendSingal. You can get the sourcecode here: 1. Rename the exe to SendSignalC. Then run the code below and happily call e. Anyhow, the changes are simple and straight-forward if you have a running cpp-compiler…. February 27, Windows Leave a comment.

Questions: In my project, I have a large container with a handler for taps.

CTRL+C and CTRL+BREAK Signals

Inside this container, I also have a button. Already read about pywinauto and SendKeys, but both of them activate window before sendin keys Add menu. To terminate you can taskkill java with this code: Runtime.Posted by: admin December 8, Leave a comment. The author lists source code and an executable. After much digging around in the debugger I discovered that the entry point that actually does the behavior associated with a signal like ctrl-break is kernel32!

The function had the same prototype as ThreadProc, so it can be used with CreateRemoteThread directly, without having to inject code. What to do? Here is the solution I finally came up with. I install a console ctrl handler for my app, then generate a ctrl-break signal for my app. When my handler gets called, I look back at the top of the stack to find out the parameters passed to kernel32! I grab the first param, which is the desired start address of the thread, which is the address of kernel32!

Then I return from my handler, indicating that I have handled the signal and my app should not be terminated. Back in the main thread, I wait until the address of kernel32! CtrlRoutine has been retrieved. This causes the ctrl handlers in the target process to be evaluated as if ctrl-break had been pressed! The nice thing is that only the target process is affected, and any process even a windowed process can be targeted.

I have done some research around this topic, which turned out to be more popular than I anticipated. I wrote a longer blog post on the topic and created a working demo program, which demonstrates using this type of system to close a command line application in a couple of nice fashions. That post also lists external links that I used in my research. Edit: The amended solution from KindDragon for those who are interested in the code here and now.

Also, plan for a contingency solution if AttachConsole or the sent signal should fail, for instance sleeping then this:. This is the same answer as I gave to this question. I think this solution should also work when the parent process is a console process.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

I am using Robot class to send keyevents. I tried robot. Learn more. Asked 8 years, 2 months ago. Active 6 years, 3 months ago. Viewed 17k times. Ernestas Gruodis 6, 10 10 gold badges 37 37 silver badges 89 89 bronze badges. Active Oldest Votes. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.

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I'm writing a wrapper class for a command line executable. NET Process object. I've tried calling Process. Killbut that doesn't seem to give me anything in the process's StandardOutput StreamReader. Might there be anything I'm not doing right? Here's the code I'm trying to use:.

The output is always empty, even though I get data back from stdout when I run the exe manually. I've actually just figured out the answer.

Can I send a ctrl-C (SIGINT) to an application on Windows?

Thank you both for your answers, but it turns out that all i had to do was this:. NET application types. If your. NET basic flow is:. NET console application. Approach will not work because AttachConsole returns false in this case main console app already has a console. It is possible to call FreeConsole before AttachConsole call but as result original. NET app console will be lost which is not acceptable in most cases. My solution for this case that really works and has no side effects for.

NET main process console :. It's not just a magic number. This would be fine if it weren't for the fact that there is no way spawn child process in.

So, you need to capture the ctrl-c event in the parent too, and then determine if you ned to ignore it not. In my case, I want the parent to be able to handle Ctrl-C events also, so I need to distnguish between Ctrl-C events sent by the user on the console, and those sent by the parent process to the child.

FWIW, in my case, what I wanted is, from a console process, create a child console process ffmpeg. I was not able to reproduce that kind of code using the standard.Our members have a wide range of skills and they all have one thing in common: A passion to learn and code Java. We invite beginner Java programmers right through to Java professionals to post here and share your knowledge.

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Become a part of the community, help others, expand your knowledge of Java and enjoy talking with like minded people. Registration is quick and best of all free. We look forward to meeting you. Members have full access to the forums. Advertisements are removed for registered users. Remember Me? Advanced Search. Results 1 to 7 of 7. How to Sendkeys to an application in Java using the Robot Class.

For any of you that have used Visual Basic, you will probably know about SendKeys. SendKeys is basically a way of sending keystrokes to an application. Java now has this ability thanks to the Robot Class.

Send Ctrl-C to process open by Java

This code will show you how to send keystrokes to an application. In this case, Notepad. The Robot class can do a lot more so its worth looking into! Forum Tip: Add to peoples reputation by clicking the button on their useful posts. Related threads: Simulate keystroke robot simulation project Re: Exception in thread "main" java.

how to send ctrl c in java

Class Waypoints Robot Class: Need an alternative to java. Re: How to Sendkeys to an application in Java using the Robot Class ei this is one is coolanyway sir javawhat other kind of executable file can i use with this method.?

Re: How to Sendkeys to an application in Java using the Robot Class SendKeys passes the keys to the currently active window and then they are proccessed as if the user typed them.

So you can send them to any application, and you can change focuses too. Robot Class Similar Threads Beginners Eclipse Tutorial. How to run first java application on Eclipse? How to Sort an Array using the java. All times are GMT

how to send ctrl c in java

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