PortConflicts and

Error :-  when i am running the Jdeveloper I am getting below error,

Port Conflicts and  <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

Solution :
If Weblogic server fails to start due to unable to get file lock, then lock files need to be removed manually before restart WebLogic Server .

Reference :- 

BEA-141281

Info: unable to get file lock, will retry ... Description This message indicates that WLS can not get file lock because other process still holds the lock. W LS will try again before timeout. Cause This is an information-level message only. Action If WLS fails to start due to unable to get file lock, then lock files need to be removed manually before restart WLS.