iOS/iPhone Show Image and Display Picture - UIImage (Objective-C,iPhone)

    UIImage* img = [UIImage imageNamed:@"girl1.jpg"];
    imgView.image = img;

//
//  ViewController.h
//
//  Created by Weerachai on 10/28/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    IBOutlet UIImageView *imgView;
}

- (IBAction)btnImg1:(id)sender;
- (IBAction)btnImg2:(id)sender;
- (IBAction)btnImg3:(id)sender;
- (IBAction)btnImg4:(id)sender;


@end

//
//  ViewController.m
//
//  Created by Weerachai on 10/28/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

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

- (IBAction)btnImg1:(id)sender {
    UIImage* img = [UIImage imageNamed:@"girl1.jpg"];
    imgView.image = img;
}

- (IBAction)btnImg2:(id)sender {
    UIImage* img = [UIImage imageNamed:@"girl2.jpg"];
    imgView.image = img;
}

- (IBAction)btnImg3:(id)sender {
    UIImage* img = [UIImage imageNamed:@"girl3.jpg"];
    imgView.image = img;
}

- (IBAction)btnImg4:(id)sender {
    UIImage* img = [UIImage imageNamed:@"girl4.jpg"];
    imgView.image = img;
}

@end