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);
	}
}