Setting Java Class Variable in Windows

PaulKK

Hi there,

I've been trying in vain to set up java on my dell inspiron 9400 laptop(XP) so that I can compile and run through Dos.

I've gone into environment variables and set CLASSPATH = "C:\PROGRAM FILES\JAVA\......" in the appropriate folder, but when I go to compile it gives a batch error or something. I can get the exact error if ye want, but it'll be tomorrow before I can get back online with it.

I have the JDK 1.5 or whatever installed so it should be working properly.

Can anyone shed some light on this for me?

Thanks in advance for any help.

warrenaldo

i am not entirely sure - but you made need to reset the computer before class wide variables are found. try it.
if still problem search for the error on google. people have always had the problem before you.

Hobbes

paste the actual error. 1.5 should set everything for you but if it doesn't (from memory)

set PATH=<path to java bin>%path%;.
set CLASSPATH=<java root directory>\jre\lib\rt.jar;.


To compile + run you would...

javac MyProgram.java
java MyProgram.java

PaulKK

Thanks for the quick replies lads, id say i forgot to set the path = value. Ill try it when I go home.

Cheers

Paul

Hobbes

You do not need to reset computer to get variables to work. They will be set by the system when you open the dos box.

Java5 should set it up in the environment variables, which I recall is..
Right click My computer
Select properties
Select Advanced
Click Environment Variables button.

Once you set it there it will always be set when you open the command prompt.

smcelhinney

Hobbes wrote:

You do not need to reset computer to get variables to work. They will be set by the system when you open the dos box.

Java5 should set it up in the environment variables, which I recall is..
Right click My computer
Select properties
Select Advanced
Click Environment Variables button.

Once you set it there it will always be set when you open the command prompt.

Shortcut for My Computers > Properties is Windows+Pause/Break.

Be careful setting global env variables, these overwrite user level ones. Not so important in single-user environment, but can wreak havoc if you are using a shared terminal. Someone else might have JAVA_HOME set to another location ..

HTH,
Stephen