Q:

given a pcap file, how to find if a src ip address is local or remote using jpcap

Given a pcap file, how can I find out which src ip addresses are local and which are remote using jpcap? 
Can any one guide me? 

A:

You can't. 
There's nothing intrinsic in a pcap entry to tell you whether the packet was inbound or outbound. 
You'll need a configuration file to tell you which IPs are considered "local".