Compiler Question 1

[IronRocket]

I'm new to Java.

I downloaded J2SE and am trying to compile a simple program by using javac on the command line of dos. It doesn't work. Just wondering how I can compile and run a program using J2SE. Remember, Java is a whole new world to me.

 

[Bong]

You're probably running afoul of some path defaults. Try fully qualifying the path to javac as well as to your .java. Then you'll probably want to make sure you're looking in the right folder for the class files.

_________________
Bob Rashkin

 

[Diancecht]

If you don't state what do you mean with "it doesn't work" it's difficult to help you.

Here you have an example that may help you.

http://java.sun.com/docs/books/tutorial/getStarted/cupojava/win32.html

Cheers,
Dian

 

[IronRocket]

After I wrote the message, I put the file in the bin and it compiles. Now, I'm trying to run the thing by typing java Howdy (Howdy is the name of my class). It's giving me this message: "Exception in thread 'main' java.lang.NoClassDefFoundError: Howdy"

My code looks like this:

public class Howdy {
public static void main(String arg[]) {
System.out.println("Howdy Y'all!");
}
}

I don't see any problem w/ this. Am I missing something?

 

[timw]

Check out the FAQs for this forum. There are some articles for beginners which will help you.

Tim

 

[IronRocket]

Thanks guys for the help.

What I did was did a "Set Classpath=c:\j2sdk1.4.2_11\jre\bin". I then put my java file and class in that directory and the program worked. Took me over 3 hours, but it finally worked out in the end.

 

[stefanwagner]

@IronRocket:
A working, but bad decision.
If you update to java-1.6, you'll have to find out what is your code, and what is SUNs.

Make a development-folder and put that in your classpath.
Lern about your systems way to handle paths and directories.

seeking a job as java-programmer in Berlin:

http://home.arcor.de/hirnstrom/bewerbung

 

[Diancecht]

As Tim suggested, you have a nice FAQ about this:

http://www.tek-tips.com/faqs.cfm?fid=3042

Cheers,
Dian