Hi Tommasso,
why you are apologise? by the way i have run as you said and i am getting the below outputs, please have a look.
user@user-OptiPlex-390:~$ ls -l
total 316
-rw-rw-r-- 1 user user 216 Jan 3 2013 add.c~
-rw-rw-r-- 1 user user 0 Jan 3 2013 conv.c~
drwxrwxr-x 3 user user 4096 Feb 3 20:40 cplusplus
drwxr-xr-x 7 user user 4096 Apr 6 20:44 Desktop
drwxr-xr-x 2 user user 4096 Sep 15 2014 Documents
drwxr-xr-x 2 user user 4096 Apr 6 20:57 Downloads
-rw-r--r-- 1 user user 8894 Sep 19 2014 dynamic-global-routing.cc
drwxrwxr-x 3 user user 4096 Jan 20 19:06 eclipse
-rw-r--r-- 1 user user 8445 Dec 13 2012 examples.desktop
-rw-rw-r-- 1 user user 0 Sep 10 2014 fifth.cc~
-rw-rw-r-- 1 user user 1 Jan 23 18:48 first.cc
-rw-rw-r-- 1 user user 21927 Jan 8 16:53 grid.tcl~
-rw-rw-r-- 1 user user 83871 Jan 20 19:05 hs_err_pid7417.log
-rw-r--r-- 1 user user 8375 Sep 19 2014 ht-wifi-network.cc
-rw-r--r-- 1 user user 2098 Jan 10 2013 kmean.c~
-rw-r--r-- 1 user user 14515 Sep 19 2014 matrix-topology.cc
-rw-r--r-- 1 user user 18060 Sep 19 2014 multirate.cc
drwxr-xr-x 2 user user 4096 Dec 13 2012 Music
drwxrwxr-x 4 user user 4096 Mar 12 2014 NS2
-rw-r--r-- 1 user user 6559 Sep 19 2014 object-names.cc
drwxr-xr-x 2 user user 4096 Dec 13 2012 Pictures
drwxrwxr-x 9 user user 12288 Feb 23 12:11 programs
drwxr-xr-x 2 user user 4096 Dec 13 2012 Public
-rw-r--r-- 1 user user 3693 Sep 19 2014 realtime-udp-echo.cc
-rw-rw-r-- 1 user user 16 Jan 5 2013 rgbhead~
-rw-rw-r-- 1 user user 946 Sep 19 2014 scratch-simulator.cc
-rw-rw-r-- 1 user user 4248 Mar 19 2014 sks.c~
-rw-rw-r-- 1 user user 1824 Mar 10 2014 sks.ns~
drwxr-xr-x 2 user user 4096 Dec 13 2012 Templates
-rw-rw-r-- 1 user user 626 Oct 10 10:23 texput.log
drwxrwxr-x 5 user user 4096 Mar 21 17:34 TraceMetrics
-rw-r--r-- 1 user user 3533 Sep 19 2014 udp-client-server.cc
-rw-r--r-- 1 user user 4434 Sep 19 2014 udp-echo.cc
-rw-r--r-- 1 user user 3359 Sep 19 2014 udp-trace-client-server.cc
drwxr-xr-x 2 user user 4096 Dec 13 2012 Videos
-rw-r--r-- 1 user user 8401 Sep 19 2014 wifi-example-apps.cc
user@user-OptiPlex-390:~$ pwd
/home/user
user@user-OptiPlex-390:~$ java -version
java version "1.6.0_33"
OpenJDK Runtime Environment (IcedTea6 1.13.5) (6b33-1.13.5-1ubuntu0.12.04)
OpenJDK Server VM (build 23.25-b01, mixed mode)
user@user-OptiPlex-390:~$ java -jar tracemetrics.jar
Exception in thread "main" java.lang.UnsupportedClassVersionError: analyzer/gui/SplashScreen : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:643)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
Could not find the main class: analyzer.gui.SplashScreen. Program will exit.
Is there any way to get a graph/plot from the trace files. Please suggest me a way. Thank you