Sometimes throws java.lang.NumberFormatException

[ghost]

Description

JVM works on Ubuntu

Scheduled task inside JVM periodically ask system statistics and catch following exceptions:

• java.lang.NumberFormatException: null
  at java.lang.Long.parseLong(Unknown Source)
  at java.lang.Long.parseLong(Unknown Source)
  at com.jezhumble.javasysmon.LinuxMonitor.uptimeInSeconds(LinuxMonitor.java:105)
  at com.jezhumble.javasysmon.JavaSysMon.uptimeInSeconds(JavaSysMon.java:156)
• java.lang.NumberFormatException: null
  at java.lang.Long.parseLong(Unknown Source)
  at java.lang.Long.parseLong(Unknown Source)
  at com.jezhumble.javasysmon.LinuxMonitor.physical(LinuxMonitor.java:66)
  at com.jezhumble.javasysmon.JavaSysMon.physical(JavaSysMon.java:192)

I can't detect some preconditions of specified errors. Time between exceptions aren't fixed.
Files in /proc are exists and contains required values.

Various system info

uname -a
Linux xxxxx-Ubuntu SMP Tue Aug 30 19:33:19 UTC 2011 x86_64 GNU/Linux

cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.10
DISTRIB_CODENAME=maverick
DISTRIB_DESCRIPTION="Ubuntu 10.10"

cat /proc/meminfo
MemTotal: 1697024 kB
MemFree: 864440 kB
... etc

cat /proc/uptime
80084.28 149307.49

[oldirtybasti]

I can confirm this bug on Ubuntu. Sometimes

JavaSysMon monitor = new JavaSysMon();
ProcessInfo[] processes = monitor.processTable();

crashes due to a NumberFormatException. The Number that was parsed contains "slee". I think some process might be sleeping?

Would be greate if you could look into that. Great library by the way, I use it every day!