iphone - Allocation and release of a Class -

i have 1 controller class x has ibaction instance method dosomething.

i have other class y calculations , has delegate self.

in method dosomething instance of class y created. should instance of y released.is @property solution this.

//this action in class x

-(ibaction)dosomething:(id)sender {

y *y = [[y alloc]init];

//init method implemented in y , job delegates being called time time. if release y. crash. place release y. @property solution creating 1 time memory , using that. there way release here when next time other object created older have been destroyed before when delegates finishes job after time.//

//[y release]; crash.

}

you can 1 thing,

// in .h file // declare this. y *y;  // in .m file  -(ibaction)dosomething:(id)sender {     if(y== nil)       y = [[y alloc]init];  } 

and in dealloc method, can release

- (void)dealloc{   [y release];   [super dealloc]; }