Java Utililty Methods Zip File List

byte[] readBuffer = new byte[2156];
int bytesIn = 0;
for (File f : dirList) {
    if (f.isDirectory())
        continue;
    FileInputStream fis = new FileInputStream(f);
    ZipEntry anEntry = new ZipEntry(f.getName());
    zos.putNextEntry(anEntry);
...

byte[] buf = new byte[1024];
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(output));
for (File actualFile : listFiles2Zip) {
    FileInputStream in = new FileInputStream(actualFile);
    out.putNextEntry(new ZipEntry(actualFile.getName()));
    int len;
    while ((len = in.read(buf)) > 0) {
        out.write(buf, 0, len);
...

if (outputFile == null || files == null)
    return;
final byte[] buf = new byte[ZIP_BUFFER];
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(outputFile));
for (int i = 0; i < files.length; i++) {
    final File f = files[i];
    if (f == null)
        continue;
...

try {
    FileOutputStream fos = new FileOutputStream(output);
    ZipOutputStream zos = new ZipOutputStream(fos);
    Collections.sort(files, new Comparator<File>() {
        @Override
        public int compare(File f1, File f2) {
            return f1.getAbsolutePath().compareTo(f2.getAbsolutePath());
    });
    File baseDirectory = files.get(0).getParentFile();
    Deque<File> entries = new ArrayDeque<File>(files);
    while (!entries.isEmpty()) {
        File entry = entries.poll();
        if (entry.isDirectory()) {
            for (File current : entry.listFiles()) {
                entries.add(current);
        } else if (entry.isFile()) {
            ZipEntry ze = new ZipEntry(
                    entry.getAbsolutePath().substring(baseDirectory.getAbsolutePath().length() + 1));
            zos.putNextEntry(ze);
            FileInputStream in = new FileInputStream(entry);
            byte[] buffer = new byte[1024];
            int len;
            while ((len = in.read(buffer)) > 0) {
                zos.write(buffer, 0, len);
            in.close();
    zos.closeEntry();
    zos.close();
} catch (IOException ioe) {
    ioe.printStackTrace();

FileInputStream in = null;
ZipOutputStream zos = new ZipOutputStream(os);
for (File file : files) {
    ZipEntry ze = new ZipEntry(file.getName());
    zos.putNextEntry(ze);
    try {
        byte[] buffer = new byte[1024];
        in = new FileInputStream(file.getAbsolutePath());
...

byte[] buf = new byte[4096];
try {
    ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipfile));
    for (File file : srcfile) {
        FileInputStream in = new FileInputStream(file);
        out.putNextEntry(new ZipEntry(file.getName()));
        int len;
        while ((len = in.read(buf)) > 0) {
...

byte[] buf = new byte[1024];
try {
    ZipOutputStream out = new ZipOutputStream(new FileOutputStream(destination));
    for (int i = 0; i < files.size(); i++) {
        String fichero = (String) files.elementAt(i);
        File file = new File(fichero);
        if (file.isDirectory()) {
            out.putNextEntry(new ZipEntry(fichero));
...

ZipOutputStream zip = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(filename)));
byte[] buffer = new byte[10000];
for (int i = 0; i < files.length; i++) {
    File f = new File(files[i]);
    if (f.exists()) {
        BufferedInputStream in = new BufferedInputStream(new FileInputStream(files[i]));
        zip.putNextEntry(new ZipEntry(files[i]));
        boolean done = false;
...

ByteArrayOutputStream bout = new ByteArrayOutputStream();
ZipOutputStream zos = new ZipOutputStream(bout);
zos.setLevel(6);
byte[] bytes = new byte[10000];
for (int i = 0; i < files.length; i++) {
    FileInputStream fis = new FileInputStream(fielPath + "\\" + files[i]);
    BufferedInputStream bis = new BufferedInputStream(fis);
    zos.putNextEntry(new ZipEntry(files[i]));
...

File filesToZip = new File(filesPathToZip);
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(new File(pathToSave)));
try {
    archiveFile(null, zos, filesToZip);
} finally {
    zos.close();