Java Utililty Methods Zip File

zip(sourceFiles, destFile, deleteOriginalFiles, false);

if (target.exists()) {
    delete(target);
final ZipOutputStream zip = new ZipOutputStream(new FileOutputStream(target));
try {
    zipDir(target, zip, dir, ""); 
} finally {
    try {
...

File[] files = tempLocation.listFiles();
int fileLength = files.length;
try {
    FileOutputStream fos = new FileOutputStream(targetZipFile);
    ZipOutputStream zos = new ZipOutputStream(fos);
    byte[] buffer = new byte[128];
    for (int i = 0; i < fileLength; i++) {
        File currentFile = files[i];
...

try (final FileOutputStream fos = new FileOutputStream(zipFile);
        final ZipOutputStream zos = new ZipOutputStream(new BufferedOutputStream(fos))) {
    final byte[] data = new byte[BUFFER];
    for (final File file : files) {
        try (final FileInputStream fis = new FileInputStream(file);
                final BufferedInputStream origin = new BufferedInputStream(fis, BUFFER)) {
            final ZipEntry entry = new ZipEntry(file.getName());
            zos.putNextEntry(entry);
...

ZipOutputStream out = null;
try {
    byte[] buffer = new byte[4096]; 
    int bytesRead;
    out = new ZipOutputStream(new FileOutputStream(zipFile));
    for (File f : files) {
        FileInputStream in = null;
        try {
...

final byte[] buf = new byte[2048];
ZipOutputStream out = null;
FileInputStream in = null;
try {
    out = new ZipOutputStream(new FileOutputStream(zipFile));
    for (int i = 0; i < filesToZip.length; ++i) {
        in = new FileInputStream(filesToZip[i]);
        out.putNextEntry(new ZipEntry(filesToZip[i].getName()));
...

final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final ZipOutputStream zos = new ZipOutputStream(baos);
try {
    for (final Entry<String, byte[]> file : files.entrySet()) {
        zos.putNextEntry(new ZipEntry(file.getKey()));
        zos.write(file.getValue());
        zos.closeEntry();
    return baos.toByteArray();
} finally {
    zos.close();

final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final ZipOutputStream zos = new ZipOutputStream(baos);
try {
    zos.putNextEntry(new ZipEntry(fileName));
    zos.write(fileContent);
} finally {
    zos.closeEntry();
    zos.close();
...

final byte[] buffer = new byte[1024];
try (final FileOutputStream fos = new FileOutputStream(zipFile);
        final ZipOutputStream zos = new ZipOutputStream(fos)) {
    final List<File> fileList = new ArrayList<>();
    generateFileList(new File(sourceFileDir), fileList);
    for (final File file : fileList) {
        final ZipEntry ze = new ZipEntry(file.getName());
        zos.putNextEntry(ze);
...

ByteArrayOutputStream bos = new ByteArrayOutputStream();
ZipOutputStream zos = new ZipOutputStream(bos);
ZipEntry ze = new ZipEntry("X");
zos.putNextEntry(ze);
pipe(is, zos);
zos.closeEntry();
zos.flush();
zos.close();
...