Geração de imagem

/**
 * @(#)Migracao.java
 *
 *
 * @author 
 * @version 1.00 2007/9/10
 */
import java.io.*;
import java.sql.*;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;
import java.awt.Toolkit;
import javax.imageio.*;

public class Execute {

    public Execute() {
    }
    
    public static void main(String args[]){
	int i = 0;
    	try{
	    	GeraImagem gi = new GeraImagem();
	    	ResultSet rs = gi.retornaFiguras();
			while(rs.next()){
				i++;
				
				System.out.println("Conteúdo do arquivo "+i+ " \n");

					   try {
							//Image img = Toolkit.getDefaultToolkit().createImage(rs.getBytes("im_figura_fso"));
							
							byte[] bytes;  
							bytes = rs.getString("im_figura_fso").getBytes();  
							
							System.out.println("--> " + String.valueOf(rs.getString("im_figura_fso")).substring(0,100));
							System.out.println("--> " + String.valueOf(String.valueOf(bytes)));
							
							Image img = Toolkit.getDefaultToolkit().createImage(bytes);
							
							BufferedImage imagem = converteImagem(img);
							ImageIO.write(imagem, "JPG", new File("teste"+i+".jpg"));

					   }catch (Exception e1) {
					       //TODO Auto-generated catch block
					       System.out.println("\n\nErro - > "  + e1 + "\n\n");
					   }  
				
			}
    	}catch(Exception e){
    		System.out.println("Ahá--- erroo -->>> " + e);
    	}
    	

    }
    
    public static String hexaToString(String hexa) {  
         StringBuilder sb = new StringBuilder();          
         char []value = new char[2];          
         for(int i = 0; i < hexa.length(); i++){  
             int pos = i % 2;  
             value[pos] = hexa.charAt(i);  
             if (pos > 0) {  
                 int intVal = Integer.parseInt(new String(value), 16);  
                 char charVal = (char) intVal;  
                 sb.append(charVal);                        
             }  
         }     
         return(sb.toString());  
     }  
     	
	 public static BufferedImage converteImagem(Image im)
	 {
	    //BufferedImage bi = new BufferedImage(im.getWidth(null),im.getHeight(null),BufferedImage.TYPE_INT_RGB);
	    BufferedImage bi = new BufferedImage(im.getWidth(null),im.getHeight(null),BufferedImage.TYPE_INT_RGB);
	    Graphics bg = bi.getGraphics();
	    bg.drawImage(im, 0, 0, null);
	    bg.dispose();
	    return bi;
	 }
    
}