Unzip file not password in Android

/****************************************************************************
* Unzip file not password
*
* Example:
* String path = "/sdcard/files.zip";
* String folderOut = "/data/data" + mCtx.getPackageName() + "/folder";
* File fi = new File(path);
* InputStream zipIn = new FileInputStream(fi);
* // if asset : AssetManager assetManager = getResources().getAssets();
* // InputStream zipIn = assetManager.open("files.zip");
* unZipFileNotPass(zipIn, folderOut);
*
******************************************************************************/