java virtual machine - help me please?

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Mitchell_Collen - 14 Jun 2007 18:26 GMT

Hello All,
I have installed jre1.4.2_14 and I have been trying to get a small "hello
world type" program to run.
Once I got jre installed, I open my dos window and changed directories to
folder on on my local drive that contains the jave program.
I then try to run it by typeing javac aus.java. The error message doesn't
recognize the command. However, when I type java the error says that it
cannot find Main string in java.lang <-- I don't have full message because I
am currently at work away from my computer. Anyway, also when I type Java in
dos it gives me all the parameters and help that I will need for using java.
I assume that dos does in fact see the java because of that. However, the
java virtual machine may or may not be set up correctly.

Will you please explain to me how to set a the virtual machine and where
source paths should be configured in JCreator LE? Any other suggestions are
welcome.

I emailed myself this message last night:

From JCreator LE: I get the following error message:

--------------------Configuration: MyProject2 - <Default> - <Default>---------
-----------
Error : Invalid path, \bin\javac.exe -source 1.5 -classpath "C:\Program Files\
Java\j2re1.4.2_14\bin" -d C:\Program" "Files\Java\j2re1.4.2_14\bin
@src_myproject2.txt"

Process completed.

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Joshua Cranmer - 15 Jun 2007 00:06 GMT

> Hello All,
> I have installed jre1.4.2_14 and I have been trying to get a small "hello
> world type" program to run.

JRE != JDK. What you want to get is the JDK (preferably a newer one, say
1.5 or 1.6)

> recognize the command. However, when I type java the error says that it
> cannot find Main string in java.lang <-- I don't have full message because I

The error you a giving is not very helpful -- it looks like you are
trying to say java java.lang which has several problems in its own right
that I am not going to address.

> Error : Invalid path, \bin\javac.exe -source 1.5 -classpath "C:\Program Files\
> Java\j2re1.4.2_14\bin" -d C:\Program" "Files\Java\j2re1.4.2_14\bin
> @src_myproject2.txt"

Several things wrong with this:
1. You seem to be building inside the Java file, which is not a very
good idea. Ideally your classpath should be somewhere else, like in a
{home dir}\Java\Project.
2. The path seems to be off...

Finally, this isn't a Java virtual machine problem; this is a Java
configuration problem. Therefore, I am X-posting to c.l.j.h with
follow-up set to c.l.j.h.

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Mitchell_Collen - 15 Jun 2007 17:16 GMT

Ok thank you for your help Joshua. I didn't think of it being a configuration
problem. I will put the java file in my home directory after I install the
JDK. I don't understand what a class path is, Does this mean a class file
folder?
Thanks, Misty

>> Hello All,
>> I have installed jre1.4.2_14 and I have been trying to get a small "hello
[quoted text clipped - 20 lines]
>configuration problem. Therefore, I am X-posting to c.l.j.h with
>follow-up set to c.l.j.h.

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java virtual machine - help me please?

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