debabrat panda

• Sep 25th, 2006

 

hi

synchronize method

 To synchronize an entire method, you just include the synchronized keyword as one of the method qualifiers, as in:

class syncDemo{

synchronized void test{

//your synchronized  code

}

synchronize object

 To create a synchronized object, you use the synchronized  keyword with an expression that evaluates to an object reference, as in

class syncDemo{

void test{

synchronized (this){

//your synchronized  code

}

regards

Deb

 

}

intalaash

 Profile Answers by intalaash 

• Sep 28th, 2006

 

function or method synchronization synchronizes entire method i.e.synchronized void MyMethod(){...}this will place a lock on the object until current thread finishes execution. This ensures that MyMethod is always accessed by a single thread at a time.But consider this,void MyMethod(){.... someOtherMethod();..}Here you might need to just make sure that call to someOtherMethod() is synchronized, so instead of making entire method synchronized, you just make a synchronized block around someOtherMethod()void MyMethod(){....synchronize{ someOtherMethod();}..}This improves perfomance by locking object for shorter duration.Of-course you need to analyze your code correctly for doing this. There is not straight forward answer as to when to use Synchronize method vs Synchronize block.