Hello , I am looking for a UML tool that imports java project and converts into UML diagrams/class diagrams. One of my friend suggested Argo UML. I was downloaded and tring to install it. I was followed the instruction in READ_me, trying to run a script the installs Argo Uml. But unable to install it. Error show that

./argouml.sh
log4j:WARN No such property [follow] in org.apache.log4j.ConsoleAppender.
ERROR: unable to get localhost information.
java.net.UnknownHostException: host: host
at java.net.InetAddress.getLocalHost(InetAddress.java:1426)
at org.argouml.application.Main.checkHostsFile(Main.java:639)
at org.argouml.application.Main.initPreinitialize(Main.java:289)
at org.argouml.application.Main.main(Main.java:165)
On Unix systems this usually indicates thatyour /etc/hosts file is incorrectly setup.
Stopping execution of ArgoUML.

Please help me.. I am using Fedora 15..
Thanks in advance.

1) # rpm -Uvh jdk-1.6.0_31-fcs.<arch>.rpm

64bits http://ftp.scientificlinux.org/linux...fcs.x86_64.rpm
32bits http://ftp.scientificlinux.org/linux...1-fcs.i586.rpm

2) java -version
java version "1.6.0_31"
Java(TM) SE Runtime Environment (build 1.6.0_31-b04)
Java HotSpot(TM) 64-Bit Server VM (build 20.6-b01, mixed mode)

3) cd argouml-0.32.2/ && sh argouml.sh : No issues.
4) cd argouml-0.34/ && sh argouml2.sh : No issues.

.

You could even just launch the latest version from the website home page using Java WebStart.

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Issue not resolved:

$ java -version
java version "1.6.0_22"
OpenJDK Runtime Environment (IcedTea6 1.10.8) (fedora-65.1.10.8.fc15-i386)
OpenJDK Server VM (build 20.0-b11, mixed mode)

# cd argouml-0.34/ && sh argouml2.sh

same error i m getting again.

First result on Google for "ERROR: unable to get localhost information.": link.
You should basically make sure that a localhost entry exists inside your /etc/hosts file.

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# 4

OK, you will have to switch from "openjdk" to java version "1.6.0_31"
by using the "/etc/alternatives/" mechanism ...

1) su
2)
/usr/sbin/alternatives --install /usr/bin/java java /usr/java/jdk1.6.0_31/bin/java 2000

3) /usr/sbin/alternatives --config java
.. And then please select the "sun jdk6".


.

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I don't think it is an issue with the OpenJDK, as I can successfully start the latest ArgoUML using OpenJDK 7_u5 on my system.
The issue probably lies in a misconfigured localhost in /etc/hosts, but only the OP can tell

Thank you every one .. Problem solved .. it is the problem with local host, i changed /etc/hosts file, made an entry to it with my <ip4 adress> <host name> ..
Thanks for the link provided .. @414N

system slows down while booting.. after an entry <ip4address> <hostName> into the etc/hosts .. how to make it as fast bootup ..

Try appending your hostname to the first localhost entry, in a similar way as described here.

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Thats working fine now... (booting as normal and argoUml is also).. Thank you @ 414N