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IP Networking

UnknownHostException

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Special Forums IP Networking UnknownHostException
# 1  
Old 05-20-2012
UnknownHostException
Hello,

Please my java program throws this exception
Code:
java.net.UnknownHostException:at java.net.InetAddress.getLocalHost

Code:
public class GetPublicHostName{
public static void main(String[] args) throws Throwable{
String host = java.net.InetAddress.getLocalHost().getHostAddress();
System.out.println(host);
}
}

have you an idea please about that?

Thank you so much
Last edited by Scrutinizer; 05-20-2012 at 08:37 AM.. Reason: code tags, also instead of quote tags
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java-functions

java-functions(7)						RPM Java packaging						 java-functions(7)

NAME

       java-functions - Functions library for Java applications. Written for the JPackage Project <http://www.jpackage.org/>:

SYNOPSIS

       set_jvm()
	    Set the java virtual machine. Use a JAVA_HOME if defined, or try to find it from java command

       set_classpath()
	    Set  the  classpath  - this functions requires a valid JAVA_HOME, JAVACMD, and JAVA_LIBDIR. JARs could be specified as an argument, or
	    via ADDITIONAL_JARS variable.

       set_javacmd()
	    set the JAVACMD variable. Options should be passed via JAVACMD_OPTS variable.

       set_flags()
	    set FLAGS variable. They could be specified as an argument, or via ADDITIONAL_FLAGS variable.

       set_options()
	    set OPTIONS variable. They could be specified as an argument, or via ADDITIONAL_OPTIONS variable.

       run()
	    run the application. It executed a following command. If VERBOSE is defined, then it prints the command to stdout.

	    exec $JAVACMD $FLAGS -classpath $CLASSPATH $OPTIONS $MAIN_CLASS "$@"

       set_jvm_dirs()
	    set JVM-related directories (JVM_LIBDIR, JAVA_VERSION, JAVAVER_LIBDIR and JAVAVER_JNIDIR variables). Requires a  correct  JAVA_LIBDIR,
	    JAVA_HOME and JAVA_CMD.

       link_jar_repository()
	    links a jar repository. Options could be found in build-jar-repository(1)

       find_jar()
	    finds a specific extention (jar or directory). Requires a correct JAVA_LIBDIR, JAVAVER_LIBDIR and JVM_LIBDIR. Used by find-jar(1) com-
	    mand.

       do_find_jar()
	    core routine used by find_jar()

       check_java_env()
	    checks java environment - the JAVA_HOME, JAVACMD, JAVA_LIBDIR, JNI_LIBDIR variables.

DESCRIPTION

       This is a library of generic shell functions which should be used on jpackage.org compatible distributions.

FILES

       /use/share/java-utils/java-functions
	    shell script functions library for Java applications

       /etc/java/java.conf
	    system-wide Java configuration file

       ~/.java/java.conf
	    user's Java configuration

SEE ALSO

   Regular Manual Pages
       build-jar-repository(1)
       find-jar(1)
       java.conf(5)
       jpackage-utils(7)

AUTHORS

       Guillaume Rousse <guillomovitch@sourceforge.net>
       Ville Skytta <scop at jpackage.org>
       David Walluck <david@jpackage.org>
       Nicolas Mailhot <Nicolas.Mailhot at laPoste.net>

REPORTING BUGS

       Report bugs using JPackage Bugzilla (http://www.jpackage.org/bugzilla/)

jpackage-utils 1.7.5						   February 2009						 java-functions(7)