Unzip with Java

gistfile1.java

byte[] buffer = new byte[1024];

private void extractSources(File tmpDir) throws IOException {
    InputStream is = ThemeCompiler.class.getClassLoader().getResourceAsStream("theme.zip");
    ZipInputStream zis = new ZipInputStream(is);
    ZipEntry entry;
    log.debug("------------- Unzip start -----------------");
    while ((entry = zis.getNextEntry()) != null) {
        log.debug("Unzip : {} ", entry.getName());

        File output = new File(tmpDir.getPath(), entry.getName());
        Files.createParentDirs(output);

        if(entry.isDirectory()){
            continue;
        }

        FileOutputStream fos = new FileOutputStream(output);
        int len;
        while ((len = zis.read(buffer)) > 0) {
            fos.write(buffer, 0, len);
        }

        fos.close();
        zis.closeEntry();
    }
    zis.close();
    log.debug("------------- Unzip done -----------------");
}