Utiliser un exe intégré dans un jar

InputStream input = getClass().getResourceAsStream("myFile");

import java.io.File;
import java.io.FileFilter;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;

public class ExportPackageFiles{
	File f ; 
    public ExportPackageFiles(String pack)
    {
    	
    	final Collection<File> all = new ArrayList<File>();
		try {
			String targetPackage = pack;
			String targetPackagePath = targetPackage.replace('.', '/');
			String targetPath = "/"+targetPackagePath;
			//System.out.println(targetPath); 
			 
			// récupération du chemin 'réel' du package
			java.net.URL resourceURL = getClass().getResource(targetPath);
			String packageRealPath = resourceURL.getFile();
			File packageFile = new File(packageRealPath);
			
			findFilesRecursively(packageFile, all, "");
			File entryDirectory = new File(targetPackagePath);
			entryDirectory.mkdirs();
//			System.out.println(targetPath) ; 

			for (File file : all) {
//				System.out.println(file.getName()) ; 
				InputStream in = getClass().getResource(targetPath + "/" + file.getName()).openStream();

				FileOutputStream writer = new FileOutputStream(new File(targetPackagePath + "/" + file.getName()));
		    	 try {
		    	   Integer carac;
		    	   while ( (carac = in.read()) != -1 )   writer.write(carac);
		    	   writer.close();

		    	 } finally {
		    	   in.close();
		    	 }
			}	

		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    }

	private static void findFilesRecursively(File file, Collection<File> all, final String extension) {
	    final File[] children = file.listFiles(new FileFilter() {
	    	public boolean accept(File f) {
	                return f.getName().endsWith(extension) ;
	            }}
	    );
	    if (children != null) {
	        for (File child : children) {
	            all.add(child);
	            findFilesRecursively(child, all, extension);
	        }
	    }
	}
}