Could I use a batch file to run a Java program?

Create a plain text file (using notepad) and type the exact line you would use to run your Java file with the command prompt. Then change the extension to .bat and you're done.

If you can't see extensions in Windows Explorer, click on Tools, Folder Options..., the View tab, uncheck "Hide extensions for known file types" and click "Apply to all folders". You will then be able to rename from .txt to .bat easily.

ok

before you can run your program written with java by a batch file you need to know how batch file work

i will assume that you don't know

batch file is a kind of file that group a number of dos command to be execute as a program

most of dos command can be used to write a batch file and there are a number of command can be used in batch file but not in dos

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in jdk there are to executable file called java and javac

you know that javac is used to call compiler to compile your files (class) and the file java is used to call the executer to execute your file ( executable class wich contain main method )

i read that you have installed jcreator

in jcreator configuration when you used it(jcreator) to the first time the jcreator asked you to define the location of jdk

he didn't ask you that for nothing

but he asked you that to use the 2 files ( javac and java )

but to dos or batch file those to file are not registerd then if you write javac or java in dos an error occure

for that you need to register those two files to be known by cmd or batch file

to register them if you are using windows Os ( winxp sp1, sp2, or other )

first go to the location where you have installed you jdk by default it's :

C:\Program Files\Java\jdk<<<jdk version>>\bin

note it's important to include the name of the folder that contain java and javac ((called Bin))

example :

C:\Program Files\Java\jdk1.5.0\bin

copy this address

Second:

go to :

1- right click mycomputer

2- choose properties

3- choose the Advanced

4-environment variables

5- a window appear go to the System variables

6-in the scroll box choose path ( vaiable )

7- click Edit

8-at the end of variable value textbox text write semicolon (;)

9-paste the address that you have copy

10-write a semicolon (;)

you have now registerd all executable file in the bin folder and the most important two file are ( java and javac)

now you can write in dos (cmd ) java to execute file but you need to give all tha address of the location of the class

example :

java c:\prog\test

not test is class file but when you use java (command ) don't wirte the extension .class

if you want simply to write java test

you need to tell the system where the file test (class ) exesit

you can do that doing those steps :

1- right click mycomputer

2- choose properties

3- choose the Advanced

4-environment variables

5- a window appear go to the System variables

6-in the scroll box choose CLASSPATH (vaiable )

( if it doesn't existe create it by click new

in variable name write CLASSPATH

in variable value paste the address of the location of the executable class file that you want to execute for example

c:\pro;

)

7- click Edit

8-at the end of variable value textbox text write semicolon (;)

9-paste the address of the file

10-write a semicolon (;)

now you have finished all resitration of variable needed by the system

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now you can creat the batch file

go to notepad

write

java <<the name of you executable class file >>

note : again don't write the extension .class

click file save

file type write bat

save it

now you have you batch file that execute your file

with my respect

A batch file can run any file you can run from the command line, and in exactly the same way.

Read up on how to call javac from the command line to compile your java code (See Sources). Once you can compile your code from the command line, you can create a batch file to automate the process. The batch file is basically a text file (with .bat extension) which lists each command you want executed one after another (similar to typing command after command on the command-line).