RE: Compiling Hello.java with javac ?

Well, you're doing Java like you would do RPG.  Unfortunately, Java is a
completely different animal from RPG, so just about everything you're
doing is wrong <grin>.

Among the issues:

1. Java is case sensitive, OS/400 is not.  In fact, the commands you've
shown below should not have worked at all, and you should have seen the
following:

qsh: 001-0019 Error found searching for command JAVAC.  No such path or
directory.

The only way uppercase JAVAC would have worked (at least on my machine)
is if there were a symbolic link created that pointed JAVAC to javac.

2. Anyway, if you type in "javac HELLO.JAVA", you will get the error you
described.  Why?  Because it doesn't recognize ".JAVA" as a valid
extension, and this is again due to case.  You need HELLO.JAVA to
actually be HELLO.java, and then javac will recognize it.

3. If you get past this, you will STILL have a problem, because the name
of the file (excluding the .java extension) must match the class name of
the class being compiled.  In this case, your class name is HelloWorld,
so the name of the file (case sensitive, remember) must be
HelloWorld.java.


Whew!  Welcome to Java, my friend!  I suggest a book such as Java for
RPG Programmers to get some more information about Java.  The good news,
though, is that you will rarely have to compile things on the iSeries.
In fact, I never compile on the iSeries anymore.  I do all my work on
the PC (including testing!) and then simply transfer the compiled code,
either .class files or .jar files, to the iSeries for integration
testing.


Joe


> From: Luqman
> 
> Whenever I logon to AS/400, I type following, because my HELLO.JAVA is
in
> /root/JAVA folder.
> 
> CD JAVA
> STRQSH
> JAVAC HELLO.JAVA
> 
> Even I tried JAVAC HELLO.JAVA but following displayed on screen.