GetImg.java

import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.*;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class GetImg
{
	  
	public static void main(String[]args)
	{ 
		 
		GetImg gi = new GetImg();
		Scanner scan = new Scanner(System.in);
		System.out.print("URL : ");
 
		String url ="";
		url = scan.nextLine();
		
		System.out.println("Waitting. . .");

		String html = gi.getContent(url);			// get content web page
		List<String> list = gi.getUrlImage(html);	// get url image
		
		System.out.println("Url " + list.size());	// size List
		for(int i = 0; i < list.size(); i++)
			System.out.println(list.get(i));		// get value of List
		


		try{
			//gi.download(url,"img.jpg"); 
			System.out.print("Download Success!! \n");
		}catch(Exception e){ System.out.print("Download Fail !! \n");}

	} // main


	public List<String> getUrlImage(String html){
		List<String> list = new ArrayList<String>();
		Pattern pat = null;
		Matcher mat = null;
		String word0 = null;
		String word1 = null; 

			// .*<img[^>]*src=\"([^\"]*)
			pat = Pattern.compile(".*<img[^>]*src=[\"']([^\"^']*)",Pattern.CASE_INSENSITIVE);
			mat = pat.matcher(html);

			while(mat.find())
			{
				word0 = mat.group(1);
				list.add(word0.toString());		// add in List
			} 	 
		return list;
	}

	 public String getContent(String fromURL){
        StringBuilder sb = new StringBuilder();
        try {
            URL url = new URL(fromURL);
            BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));  
            String line;
            while ((line = reader.readLine()) != null) {   
                sb.append(line).append("\n"); 
            } 
            reader.close(); 
            return sb.toString();    
        } catch (MalformedURLException e) { }  catch (IOException e) { }
        
        return ""; 
   }

   public void download(String fileURL, String fileOutPutPath) throws MalformedURLException {
        try {
            URL url = new URL(fileURL);
            url.openConnection();
            InputStream reader = url.openStream(); 
            FileOutputStream writer = new FileOutputStream(fileOutPutPath);
            byte[] buffer = new byte[153600];
            int bytesRead = 0; 
            while ((bytesRead = reader.read(buffer)) > 0) {
                writer.write(buffer, 0, bytesRead);
                buffer = new byte[153600];
            } 
            writer.close();
            reader.close();
        } catch (MalformedURLException e) { } catch (IOException e) { }

   }
}