Running java fro DOS windows

Hi, can somebody tell me how to run java files from the DOS window, in windows??? thanks

joej wrote:
ok, thanx, i did and i found i should write this javac javafile.java, but when i did i got this error "javac is not recognized as an internal or external command, operable program or batch file, what does that mean or what could it be causing it?In the dos-shell, when you type "javac" or any other commands, the shell searches it's available path for the command. In this case, "javac" was not included as part of the path that the does shell searches and therefore it returned that error.
Go to google and search for how to add javac to source path.

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I want to run java program on windows environment as background process

Hi all
I want to run java program on windows environment as background processSo command prompt return after executing java command and program on background In Linux we can do this easily �but I do not how to do this in windows
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import java.io.*;
import java.util.*;
public class TestClass {
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first i compile this
javac TestClass.java
then i run this by using this command
java TestClass
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Thanks dude
This solution �start java TestClass� works fine �. But it does not solve my problem
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Can we run java programms on Windows XP?

Hi experts..
I installed JDK on Microsoft Windows XP Home Edition..but i am unable to run java programmes.
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HTH

How to run .java file in windows ?

How to run .java file in windows without installing any program? Thx!

First, U must make sure that there is JDK on your computer
Then, set the envionment variables which the os can find your compiler and interpreter: javac java
after those, you must complie your .java file to .class file, then you can excute it by java, for example " java helloworld"

Run java in dos

anyone can tell how to use dos to run Java program?
I learn Eclipse few month, so I dont know how to run java in dos. I did follow the install guide to set the PATH like that
C:\Program Files\Java\jdk1.5.0_02\bin in "Path" in the User Variables
but I type to run by typing "
*c:>javac welcome1.java*
it says "javac is not in internal or external command to execute this file.
Did I miss something in that?
Please kind help!!!

did you have any luck in figuaring out how to use the dos compiler. You have to use a simple text editor like WordPad and then you save all your files in the same dir. I have been using a dos compiler for school, even thought I don't really care for them. It has been great practice getting around in dos again. And you don't have to access the Run Time Enviroment to get your program to run. just complie then first with javac filename.java and then run them with java filename.

Running java program at windows startup

I need to run java program at startup and then it will continue to run in its own thread.
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Zeeshan

This is one option but this is not feasible in my scenario as this application will be running over a network which involves hundreds of computer so is there any way to do it programatically?
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Hi,
i developed an application (Form base application) that connect to FTP server and connect to a server via telnet.
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Error when run java file on windows 7 64bit

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When I run the java file from cmd
java -jar fai-packager.jar -package -target ipa-test -storetype pkcs12 -keystore c:/project/iphone_dev.p12 iLife.ipa c:/project/iLife-app.xml -C c:/project/ iLife.swf -C C:/project/icons . -C C:/project Default.png
I get this error message
'java' is not recognized as an internal or external command,
operable program or batch file.
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Filepath probs running Java w/ DOS and Java 2 SDK

Please help! I have been trying to get a .class file to run for the past four days, using DOS to run the file. I have tried to enter every filepath I can -think- of, and the program still will not run. I have even tried running the file on others' computers that also have a Java 2 SDK...and still cannot get the file to run. However, I know for certain that the file is correct and is able to be run....so that means that somehow I am not putting in the right filepath. I guess my question is....what's the file path?
Here's what I was told to do...which has not worked thus far...
My Java SDK filepath is: C:/Java2SDK1.4.0
I was instructed to open DOS, then, to get to here:
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I entered the filepath, so my DOS prompt looked like this before I hit the enter key:
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Would it matter if the SDK for some reason won't recognize my .java files either? I even tried doing the filepath with a file I KNOW should work...and on computers it should have worked on...and could not get it to accept my filepath.
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Author: philip_ross
To run a .class file you have to use the java command (javac is the compiler which creates .class files from .java files). Try running
C:\Java2SDK1.4.0\bin\java MathPrac
Thank you for the suggestion, however when I attempted to run it, I got an error that said: Exception in thread "main" java.lang.NoClassDefFoundError: MathPrac
Isn't this an error that states that the name of the file and the class name inside the file are not the same? And if so, how can I check to see if they are the same if I don't have the .java file? I did double-check my spelling, tried it four times just to be sure.
To ChuckBing:
Hey, thanks for the tutorial! I'll take a look at that, too. It always helps to have other resources.
To jwenting:
<Grin>. Duly noted, and thanks. I was trying to keep from being -too- technical in my explanation of what was going on.

How to run Java on Dos prompt

HI~~
I am new to Java and really need help.
I have a program which requires a file as an argument and the file name should be provided as a command line argument.
In dos prompt, how do I tell computer which file is the input file for the program to take as an argument?
Thank you very much for helping me out.

suppose your file in java is Hello.java
Compile it(javac Hello.java) . u get Hello.class
Now suppose your input file is file.txt
So at the command prompt
type
c:\>java Hello file.txt
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Can't get java to run in MS-DOS

Can someone out there, help me with a execution problem, am having in running java. I install jdk1.3 from a CD in a book(Java 2 by Andy Harris). I,am running under window98, with lots of spaces and memory. Each time I would try to execute a java module, the DOS screen would come up and then drop away. I have re-install the software. same problem, I have try run under DOS(coming out of window and restarting in DOS), same problem, so I log on the SUN web site and downloaded j2se1.4 install it try running it and still got the same problem, The screen up with data on it and just go away. What is wrong here!! [email protected]

Yes! They are right.. We should run java in on windows, not on pure DOS. So restarting in DOS mode would not help.
1. Start windows
2. Click on Start -> Run
3. Type Command and hit enter
4. This should bring up DOS command prompt.
5. Type "java" in at the command prompt
6. If it gives you some suggestions about how to run java. If it says "Bad command" java.exe is not in the path. Find java.exe and append it to PATH environment variable.
7. Once you get java working - open the command prompt as told earlier and run the java program by typing the command
java <Main Class Name>
8. Doing it this way would help you find out if there are any error messages.
Your DOS window is closing because there was an error or your program finishes running. If you open DOS prompt first and then run java program it would not close the window and you will be able to see the error messages in the same DOS windows.
Hope this helps..

How to read compiler msgs in DOS window?

Hi,
I'm just starting java programming and I'm doing the compilation in a DOS window. However it doesn't scroll. What do you guys do when the error messages go off the top of the screen?
Steve

Hello Steve,
You didn't say which operating system you are running, But I suspect that you are running either Windows/95 or Windows/98. Normally the output from a command run in a DOS window goes to standard output. So when you list the files in a directory with the 'dir' command the output can be redirect with the greater than sign. As in:
C:\>dir > dirlist.txt
The trouble that you may encounter (if you are running Windows/95 or Windows/98) is: The error messages from javac are NOT sent to standard output (stdout), but are sent to standard error (stderr) instead. On some Windows operating systems, notably Windows/95 and Windows/98 there is no support for redirecting output from standard error. Windows/NT does provide support for redirecting output from standard error.
Redirecting the standard error output is more difficult; COMMAND.COM doesn't give you any way to do it, but you can either get an add-on utility to do it or use a more powerful shell like 4DOS at:
http://www.jpsoft.com/
that does allow this as a standard feature.
Another solution is to use an IDE such as Forte for Java. See:
http://www.skylit.com/javamethods/faqs/scrollout.html
for another solution.
-Merwyn,
Developer Technical Support,
http://www.sun.com/developers/support.

DOS window

I am new to the Java language, and am currently a student in a programming class. I am working on a small project that runs in the DOS window. I was wondering if there is a way to set the size of the DOS window from within the program?
Any help would be greatly appreciated!

Any help would be greatly appreciated!Remember that "DOS window" is a Microsoft construct; Java's designed for cross-platform apps. Just something to keep in mind.

Closing DOS window

I have a bat that looks like this everything works
start javaw -jar Runner.jar
but is there anyway to make the dos window close...
i thought javaw was supposed to run without the dos window...
or is my dos window a result of -jar
thanks for anyhelp
Scott

I did some testin on my win2000 machine, and running a batfile with the line
start C:\jdk1.3.1_01\bin\javaw.exe -jar jarfile.jar
gives just a quick flash of a dos window before it closes again, and my java application starts. The same works for jsdk1.4.1_01. The only way I have found to not have the dos window close automatically is to remove the "start" part of the command, in which case the window stays open as long as the application runs and then terminates. So I don't really know what causes your problem.
When you start a bat file Windows open a dos window. When to close that again is basically up to Windows, not the programs running in it. So I think it's question of telling Windows to behave, and not the javaw command as such. I seem to remember that the properties dialog for shortcuts to dos commands in winXP have a checkbox for something like "leave dos window open", but I'm not sure.
What does your dos window look like? - Does it "hang" on the javaw command, or do you get a new prompt you can write to?

How do i monitor performance in the system of a Java program in Windows XP?

I want to record the CPU usage and Memory usage on an hourly basis programatically, for an already running java class in Windows XP environment for the purpose of testing the Java class. The recording has to be done independent of the java class.By Cpu usage and Memory usage , i need to know how much of the computer's memory and CPU has been used by the java class.
I tried the HPROF tool available with J2SE 5.0, but it gives the details of each of the functions' usage in the program's allocated space in memory. moreover, it is not independent of the execution of the class.
The other option is to make use of the Performance tool available in Windows Xp->Administrative tools. This is a complex procedure, and i am not sure of how to proceed in this direction.

You can use the windows performance monitor (perfmon.exe / perfmon.msc). I don't know wther it is also included in the XP Home Edition. But this is the tool you are looking for. It can display the information in realtime but also can write to a protocoll.
Here's a shor description of what to do (i have a german windows so i'm more or less guessing the english terms)
- Start perfmon.msc
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- open "performance protocalls and warnings", the first sub element should be something like"performance protocalls" or "performance indicator"
- open the context menu for it and create a new protocoll settings.
- add the information to it you are interested in and make other changes if you want
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It will take some time till you know what you are doing (and most of the information the performance monitor is useless to 99% of the people). But its a quite usfull tool once you know how to use it

Running java fro DOS windows

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