Needing to set CLASSPATH well

Question

I'm new in java and faced aproblem in PATH . I want to set classpath of java and want someone to review what i did to know what's the exact problem

java -version

java version "1.6.0_38"
JAVA(TM) SE Runtime Environment (build 1.6.0_38-b05)
Java Hotspot(TM) Client VM (build 20.13-b02,mixed mode, sharing)

javac -version

javac 1.6.0_38

whereis java

/usr/bin/java  /etc/java  /usr/bin/X11/java   /usr/share/java

which java

/usr/bin/java

echo $CLASSPATH

empty

i edited in /etc/profile this

JAVA_HOME=/usr/lib/jvm/jdk1.6.0_38
PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
export JAVA_HOME
export JRE_HOME
export PATH

and i edited in .bashrc this

PATH=/usr/lib/jvm/jdk1.6.0_38/bin:$PATH
export PATH

I'm on ubuntu12.04

possible Duplicate : http://stackoverflow.com/questions/1975684/setting-up-java-classpath-and-java-home-correctly-in-ubuntu — santhosh, Oct 01 '14 at 06:30
A Question should contain an actual question, and this one doesn't. Hint: "please review this" is NOT a question. Hint 2: if you your current settings are not working, you need to explain what the symptoms are. — Stephen C, Oct 01 '14 at 07:21
i explained it by echo #CLASSPATH is empty and post all my setting that help anyone have the knowledge to solve it — , Oct 01 '14 at 07:23
Why do you “Need to set `CLASSPATH`”? Java itself doesn’t need it. And since you have accepted an answer which makes no sense, it seems you have a working environment, even if the contents of the `CLASSPATH` is nonsense. Just a small hint: don’t trust twenty year old tutorials. — Holger, Oct 01 '14 at 08:13

Ashay Patil · Accepted Answer · 2014-10-01T07:04:00.677

0

If you want to set CLASSPATH for java, DO :

Update .bashrc(sudo gedit $HOME/.bashrc)

     export JAVA_HOME=/usr/lib/jvm/jdk1.6.0_38
     export PATH=$PATH:$JAVA_HOME/bin
     export CLASSPATH=$JAVA_HOME/bin

now run this command to apply changes to .bashrc(source $HOME/.bashrc).close the terminal.
reopen the terminal

edited Oct 01 '14 at 07:04

answered Oct 01 '14 at 06:37

Ashay Patil

i'll try it now but am i delete the commands in /etc/profile or not ? – Oct 01 '14 at 06:40
i tried your command sudo source $HOME/.bashrc but i got source : command not found – Oct 01 '14 at 06:45
Sorry,there is no need to write sudo ...just write (source .bashrc) – Ashay Patil Oct 01 '14 at 06:53
Thanks for helping . i want to set CLASSPATH also because i echo $CLASSPATH and got empty ! – Oct 01 '14 at 06:59
you want CLASSPATH=/usr/lib/jvm/jdk1.6.0_38/bin....am i right?...if yes then add in bashrc (export CLASSPATH=$JAVA_HOME/bin) – Ashay Patil Oct 01 '14 at 07:01
yes but how can i write it export CLASSPATH or what ? – Oct 01 '14 at 07:03
i tried it but still empty when i used (echo $CLASSPATH) – Oct 01 '14 at 07:10
have you run (source .bashrc) after updating .bashrc? also reopen terminal – Ashay Patil Oct 01 '14 at 07:15
yes i found it . sorry i didn't open new terminal +1 and accept answer – Oct 01 '14 at 07:18
That will set `CLASSPATH` to the bin/ directory of the jdk, so it’s not empty, but it doesn’t make the slightest sense. In that directory are no classes. – Holger Oct 01 '14 at 08:09

1 Answers1