Java and command prompt

easy and quick question, when running a java program in command prompt and you want to stop it early or want to stop it if in an infinite loop without closing command prompt whats the command to do that? For the life of me i cant remember.

In Windows, press Control-C.
This is not a Java related question though.
Vincent

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Running java from command prompt?

What do I need to be able to run java code from the command prompt? I have J Builder and when I have questions, mainly people give want me to run from command line. When I do so it says it does not know what javac is.

javac, java etc.. commands are in the j2sdk\bin directory.
So you have to give PATH to that bin directory in order to use it in command line. Go to the JBuilder installation folder and look for the j2sdk. (JBuilder comes with the j2sdk but the name may vary)
If you find it, then give the PATH to it's bin directory.
Or you can download the j2sdk from sun seperately, and give the PATH to its bin directory.

Using java from command prompt

Hi, I have used command prompts for a long time, though not recently. But this has never happenned to me, and I may have been using a different OS the last time I really used a command prompt. I am currently running Windows XP.
Anyways, when I try to simply change a directory, you know cd "filename", it tells me:
Parameter format not correct - "filename"
Basically, it won't accept any strings as a parameter. I'm really surprised at this. Is this normal? In any case, I got around this by using the short names for files. For example, I used the name docume~1 instead of "documents and settings".
Then, when I got to the folder where my java files were stored, it told me it was an invalid directory but nonetheless allowed me to use it. However, no commands worked except for cd..
Java did not work, nor did basic commands like dir or help. Do you have any idea what is wrong with my command prompt? I know this is not specifically a question about Java, but I can't use Java without this.
thanks.

Basically, it won't accept any strings as a parameter.
I got around this by using the short names for files. For example, I
used the name docume~1 instead of "documents and settings".So it is accepting some strings.
Check that you are using cmd.exe not command.com. Ie, from
Start->Run... typecmdAnd not command.
Try the javac command and if the computer says'javac' is not recognized as an internal or external command,
operable program or batch file.then will have to set your OS path (not CLASSPATH - do not set
CLASSPATH at any time or the command prompt will likely never work
again).
Instructions for setting the OS path are [urlhttp://java.sun.com/j2se/1.5.0/install-windows.html]here. Scroll down to
point number 5

Problem with executing java on command prompt

Hi my program uses java mySQL connector to connect to a local host. The program works fine when i run through netbeans. But when i run through command prompt it gives in this error message
java.lang.ClassNotFoundException:com.mysql.jdbc.Driver Can anyone help me to solve this problem

add mysql.jar file to ur classpath, it will work fine.

Running Java without Command prompt support

Hi,
Can I run my class file without showing the command prompt in background.
I tried with javaw, but its not working. I have jdk1.5 installed.
please help me

Jar files (<wavey subliminal type effect>search button</wavey subliminal type effect>) are on most modern OSes double clickable.
http://java.sun.com/docs/books/tutorial/jar/index.html

JavaHelp support and command prompt

two problems about RoboHelp 8.
1, It is said that JavaHelp Help and Oracle Help can be the output format of RoboHelp project in the help of RoboHelp. But I can not find a way to generate JavaHelp or Oracle Help. Could you tell me does RoboHelp 8 support it?
2, Generate and publish output from the command prompt. I use the command as below:
"e:\test_RoboHelp\robotest\robotest.xpj -l WebHelp -o E:\test_RoboHelp\a"
"e:\test_RoboHelp\robotest\robotest.xpj" is a project which does exist. But Why the output folder is not "E:\test_RoboHelp\a" as I have set?
Thanks

Addressing 1 only.
Is the problem that the list of output types does not include those outputs or that they do not work?
If the former, right click in the layout pod and add a new layout, you will be able to select those types.
If the latter, see the JavaHelp page on my site.
See www.grainge.org for RoboHelp and Authoring tips

Sound problem and command prompt problem

hi
My new cq40 610tu compaq laptop works with only left side speaker is it build with only one left side speaker? Is there no dual speaker? But with head phone two headphone speaker works properly. tell me details.
another problem when we open command prompt in winxpSP2 it is not stable after few seconds it turns off automatically. When I type large things in ms word 2003 cursor goes different place automatically. whats the problem?
I purchase this laptop just 15 days ago. What's the solutions?
thanks
Dhiman

Hi kbzone,
... there should difinitely be no sparks ) I recommend that you start with checking the wiring ... is the computer connected to earth, is the amplifier? Are they connected via the same power socket? Are you sure that the amplifier is OK?
Then, will it be possible to have any sound from the card if the amplifier is not used? You can try removing cards, uninstalling drivers and then re-install ...
It is well possible that by now you have damaged your soundcard, btw
Hans

After installing Windows Server 2008 DATA CENTER stuck on blank screen and command prompt window

After a new fresh install of Windows Server 2008 Data Center I get this solid blue screen with a comand prompt window showing (user\Administrator) I have limited use of the commands, am able to bring up the task manager by CTL Del and perform limited functions. I was able to run the same software on this machine before, nothing has changed. The way I ran the software on it before was from an image I deployed to it,(not from a fresh install). The old image timed out and I could not rearm it, that is why I did a fresh install. I tried to use gpedit.msc but the command did not work.

You may be using Windows with limited functionality as the previous version expired. Did you re-format the drive/partition before you did the "fresh" install if not Windows probably kept the old install information so knew that it was expired previously. Either activate Windows (try typing slui.exe and filling in the product key and activate - then restart the machine) or re-format the drive/partition that Windows is on and re-install Windows again.

Executing java in command prompt

how can i execute java in cmd and log the result at the same time?
as i'm hitting problem with the class that i remotely executed and do not know what happen at all :(
thanks alot!!

so does it mean .. java runapp > output c:/log >
error ?? how i get the error message..
thanks
java RunApp > C:\log 2> C:\errorView the error file to see the error message.

Ruuning java at command prompt

Totally new to using java technology and i've set up the classpath variable and installed the files checking the size yet i cant work out how to run the program or where from! I apologise for my ignorance. I've got files which where wrooten and compiled on a linux based machine now i'm trying to run them on Windows...Where do i start?

on windows
set PATH=C:\JDK1.3.1\bin;%PATH%
(here in place of c:\jdk1.3.1\bin you can specify the bin directory of the place where you have installed the jdk... of you don't remember where you had installed it, then just find javac.exe on your disk and specify its directory here in place of c:\jdk1.3.1\bin)
now go to the directory where you have kept your java programs.
type java -version
and you should see the version of the jdk that you have installed. on typing javac the java compiler should run.
If you are on Unix (or unix like) platforms
type
export PATH=/opt/jdk1.3.1/bin:$PATH
(here again instead of /opt/jdk1.3.1/bin you have to specify the directory where you have installed your jdk.)
hope this helps. let me know if you need more assistance.
regards,
Abhishek.

How to pause output in command prompt

I have 10 sentence for instance, i want to display one sentence each time i press enter. Does anyone know how to do it in java?(command prompt)

1. Wrap the default System.err and System.out in your own PrintStreams
2. Replace them with your wrapper classes (see System.setErr(PrintStream) etc)
3. In the wrapper classes, parse output looking for '\n' chars + any time you find one, write to that point, then read a return from System.in

Changing directory at command prompt

when I try to change the directory to java at command prompt line it says invalid file name. I have check the path and it is fine. What is the problem?

What operating system?
If Windows, and the path contains any spaces, enclose the path within double quotes. eg.
c:\> cd "C:\Program Files\Java\1.4.0"
Bhav

Struck with Homeland security virus - not able to recover via safe mode nor by command prompt

my laptop hp 64bit windows 7home prem
the homeland security virus has blocked my laptop
m not able to anything....
for all safe mode, safe mode with networking and command prompt .. d laptop restarts and gets locked in normal mode
plz advice

Try a Kapersksy CD to boot the laptop:
http://malwaretips.com/blogs/homeland-security-virus/#kaspersky
Or, HitmanPro usb flash to boot from:
http://www.bleepingcomputer.com/virus-removal/remove-homeland-security-ransomware
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Command prompt UI

Hi. Is it possible to create a UI like those command prompts and terminals in Operating Systems like Windows , Linux , Mac ...etc using Swing ? How should I do so ?
The basic way which I can think of is using a text area a display and a textfield to take in commands but I was thinking that this wouldn't give a command prompt like feel to the UI. So I was thinking that maybe if there's anyway that Swing can create a command prompt like UI like those of OS terminals and command prompts ?

Thanks for all the help. But I don't really understand the code on the website given. Is there any other ones ? Maybe with the ability for the user to time in something and the console would respond ? So I can try and understand it.

How java runs in command prompt and why java runs on it

how java runs in command prompt and why java runs on it

command prompt was used before the development of IDEs like RAD,eclipse etc.
its still used for better understanding of the compilation and errors.
type the java file and save the file(source file) in the bin folder of ur jdk environment with extension .java. the source file must be the one that has the main method declared.
in the cmd prompt screen , set the path of bin folder.
eg:C:/program files/jdk(some version)/bin/...
for compilation,type:
javac (source file_name).java and press enter
for running the file:
java source file_name

Java and command prompt

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