who says can not run garbage collector forcefuly?
we can as System.gc();

we can request it by calling System.gc() or Runtime.gc() but
there is no guarante that gc will run immidiately.....

Hi Ramesh
   Sir Garbage collector is a thread and nothing can 
pridict about the excecution time of a thread at runtime.
System.gc(); is a method to start that non user thread 
explicitly.

Hi All....
yea thats true that we can't force for Garbage Collection. 
We can send a request by system.gc(); at any time but its 
not sure that garbage collection takes place at that time. 
It depends on memory. So we cant forcr fot GC either 
sending the explicit request.

can catch me on +91-9899954354

when jvm find that the object of that class is not used for
long time ,if that situation occurs then jmv jmv
automatically calls that garbage collector