public static void addFilesToZip(File source, File[] files){
        try{
            File tmpZip = File.createTempFile(source.getName(), null);
            tmpZip.delete();
            if(!source.renameTo(tmpZip)){
                throw new Exception("Could not make temp file (" + source.getName() + ")");
            }
            byte[] buffer = new byte[1024];
            ZipInputStream zin = new ZipInputStream(new FileInputStream(tmpZip));
            ZipOutputStream out = new ZipOutputStream(new FileOutputStream(source));
            for(int i = 0; i < files.length; i++){
                InputStream in = new FileInputStream(files[i]);
                out.putNextEntry(new ZipEntry(files[i].getName()));
                for(int read = in.read(buffer); read > -1; read = in.read(buffer)){
                    out.write(buffer, 0, read);
                }
                out.closeEntry();
                in.close();
            }
            for(ZipEntry ze = zin.getNextEntry(); ze != null; ze = zin.getNextEntry()){
                out.putNextEntry(ze);
                for(int read = zin.read(buffer); read > -1; read = zin.read(buffer)){
                    out.write(buffer, 0, read);
                }
                out.closeEntry();
            }
            out.close();
            tmpZip.delete();
        }catch(Exception e){
            e.printStackTrace();
        }
    }