Adding UIToolbar and UIBarButtonItem programmatically

//create toolbar using new
     toolbar = [UIToolbar new];
     toolbar.barStyle = UIBarStyleDefault;
     [toolbar sizeToFit];
     toolbar.frame = CGRectMake(0, 410, 320, 50);

     //Add buttons
     UIBarButtonItem *systemItem1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
                                                                                  target:self
                                                                                  action:@selector(pressButton1:)];

     UIBarButtonItem *systemItem2 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction
                                                                                  target:self
                                                                                  action:@selector(pressButton2:)];

     UIBarButtonItem *systemItem3 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera
                                                                                  target:self
                                                                                  action:@selector(pressButton3:)];

     //Use this to put space in between your toolbox buttons
     UIBarButtonItem *flexItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
                                                                               target:nil
                                                                               action:nil];

     //Add buttons to the array
     NSArray *items = [NSArray arrayWithObjects: systemItem1, flexItem, systemItem2, flexItem, systemItem3, nil];

     //release buttons
     [systemItem1 release];
     [systemItem2 release];
     [systemItem3 release];
     [flexItem release];

     //add array of buttons to toolbar
     [toolbar setItems:items animated:NO];
     [self.view addSubview:toolbar];