How to java on FreeBSD?

[graudeejs]

Test.java

import java.lang.reflect.Array;
class Test
{
        public static void main( String argv[] )
        {
                System.out.println( "Arguments:" );
                int i = 0;
                while( i < Array.getLength(argv) )
                {
                        System.out.println( argv[i] );
                        i++;
                }
        }
}

so how to compile ?

# java Test argument1 argument2 argument3
Exception in thread "main" java.lang.NoClassDefFoundError: Test

Why?

[Carpetsmoker]

A quick google search seems to indicate that the CLASSPATH environment variable is unset or set improperly.

Java lives in /usr/local/jdk-<version> or /usr/local/diablo-jdk-<version>, depending on which version you installed.

[graudeejs]

still can't get it to work, even with setting CLASSPATH, still same old thing

#java hello
Exception in thread "main" java.lang.NoClassDefFoundError: hello

[kazcor]

so how to compile ?

Regarding this question - I hope I'm wrong, but you did this before?

javac Test.java

[graudeejs]

Yes, i did,
# javac Test.java
everything was OK
but them, when i run java Test
Or same with Hello progrram....
I got that dam error

P.S. sorry, i'm in bad mood, i was searching for dam tzupdate....... (finally found it)

[Carpetsmoker]

Originally Posted by killasmurf

still can't get it to work, even with setting CLASSPATH, still same old thing

#java hello
Exception in thread "main" java.lang.NoClassDefFoundError: hello

Well, what did you set the contents of CLASSPATH to? Are you sure it's set properly?

[graudeejs]

Originally Posted by Carpetsmoker

Well, what did you set the contents of CLASSPATH to? Are you sure it's set properly?

I tried multiple versions.....
I use csh, so i tried:

setenv CLASSPATH /usr/local/jdk1.5.0
setenv CLASSPATH /usr/local/jdk1.5.0/bin
setenv CLASSPATH "/usr/local/jdk1.5.0/bin;/usr/local/jdk1.5.0/jre......."

and some more....
Now i'm compiling jdk1.6
maybe that will work

[Carpetsmoker]

From http://java.sun.com/j2se/1.3/docs/to...classpath.html

Class paths to the .jar, .zip or .class files. Each classpath should end with a filename or directory depending on what you are setting the class path to:
For a .jar or .zip file that contains .class files, the class path ends with the name of the .zip or .jar file.
For .class files in an unnamed package, the class path ends with the directory that contains the .class files.
For .class files in a named package, the class path ends with the directory that contains the "root" package (the first package in the full package name).

Multiple path entries are separated by semi-colons. With the set command, it's important to omit spaces from around the equals sign (=).

The default class path is the current directory. Setting the CLASSPATH variable or using the -classpath command-line option overrides that default, so if you want to include the current directory in the search path, you must include "." in the new settings.

Classpath entries that are neither a directory nor an archive (.zip or .jar file) are ignored.

I don't have Java installed right now, but I think it should be something like /usr/local/jdk1.5.0/Classes/ ...

[adamk]

Your CLASSPATH should be set to the full path of the jar files containing the necessary classes, or the directory the .class files are in.

[graudeejs]

/usr/local/jdk1.5.0

# ls
COPYRIGHT
README.html
demo/
jre/
man/
src.zip
LICENSE
bin/
include/
lib/
sample/

[Carpetsmoker]

Sjeez man, show some initiative, search around in the Java directory, search the internet...

[graudeejs]

I'm doing that.....


Also tried several options with
java -classpath
but no progress

[adamk]

Well do you know what class you need and where it's located on your system?

Adam

[graudeejs]

sorry for my noobish noobishness, i found what the hell was wrong... for most part it was program.....
lol


everything worked using
java -classpath . hello


But interesting thing is that example form books CD doesn't compile with javac...... (i might know why)


Wonder if complex programs will work.....