read linux config files using java

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Java

Linux

hi i need some help in my project a build application in java that read config files from Linux system and i wont to show some value from this files like this

//the code in config file
subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.128 192.168.1.254;
option subnet-mask              255.255.255.0;
option broadcast-address        192.168.1.255;#commnet here
....
}

sow in the application it should be print something like that

network 1 : 192.168.1.0/24
  range : from 192.168.1.128 to 192.168.1.254
  mask : 255.255.255.0
  broadcast : 192.168.1.255

so i need to read the value from specified args like "option subnet-mask" to the end of the line is ";" and return just the value "255.255.255.0". and if there comment "#" don't do anything just go to next line. and for each configuration is start from "{" and end at "}". so when is cam to "}" is should be stopped. and go for the next network if there. thanks for helping