JavaでZip圧縮

JavaでZip圧縮します。
ZipEntryとかすぐ忘れてしまうので、備忘録としてメモ。

private void createZip() {
    File[] files = {/* 圧縮したいファイル配列 */};
    ZipOutputStream zos = null;
    try {
        zos = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(new File("hoge.zip"))));
        createZip(zos, files);
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(zos);
    }
}

private void createZip(ZipOutputStream zos, File[] files) throws IOException {
    byte[] buf = new byte[1024];
    InputStream is = null;
    try {
        for (File file : files) {
            ZipEntry entry = new ZipEntry(file.getName());
            zos.putNextEntry(entry);
            is = new BufferedInputStream(new FileInputStream(file));
            int len = 0;
            while ((len = is.read(buf)) != -1) {
                zos.write(buf, 0, len);
            }
        }
    } finally {
        IOUtils.closeQuietly(is);
    }
}