Java Utililty Methods Unzip File

return new InflaterInputStream(inputStream);

final ZipInputStream zipIs = new ZipInputStream(new BufferedInputStream(new FileInputStream(zipFileName)));
ZipEntry entry;
int count;
final byte data[] = new byte[BUFFER_SIZE];
while ((entry = zipIs.getNextEntry()) != null) {
    final File file = new File(directory, entry.getName());
    if (meetRequirements(file)) {
        final BufferedOutputStream dest = new BufferedOutputStream(new FileOutputStream(file), BUFFER_SIZE);
...

ArrayList<File> result = new ArrayList<File>();
BufferedOutputStream dest = null;
FileInputStream fis = new FileInputStream(chemin);
BufferedInputStream buffi = new BufferedInputStream(fis);
ZipInputStream zis = new ZipInputStream(buffi);
ZipEntry entry;
while ((entry = zis.getNextEntry()) != null) {
    File temp = File.createTempFile(tempPrefix, entry.getName());
...

if (compressedValue == null)
    return null;
ByteArrayInputStream in = new ByteArrayInputStream(compressedValue.getBytes("ISO-8859-1"));
GZIPInputStream gzip = null;
Reader reader = null;
try {
    String value = "";
    gzip = new GZIPInputStream(in);
...

GZIPInputStream gzipInputStream = new GZIPInputStream(new FileInputStream(inputCompressedFile));
FileOutputStream fileOutputStream = new FileOutputStream(outputFile);
byte[] buffer = new byte[1024];
final int offset = 0;
int length;
while ((length = gzipInputStream.read(buffer)) > 0) {
    fileOutputStream.write(buffer, offset, length);
gzipInputStream.close();
fileOutputStream.close();

try {
    FileInputStream tin = new FileInputStream(inputFile);
    CheckedInputStream cin = new CheckedInputStream(tin, new CRC32());
    BufferedInputStream bufferIn = new BufferedInputStream(cin, BUFFER);
    ZipInputStream in = new ZipInputStream(bufferIn);
    ZipEntry z = in.getNextEntry();
    while (z != null) {
        String name = z.getName();
...

try {
    if (str == null || str.length() == 0) {
        return str;
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ByteArrayInputStream in = new ByteArrayInputStream(str.getBytes("ISO-8859-1"));
    GZIPInputStream gunzip = new GZIPInputStream(in);
    byte[] buffer = new byte[256];
...

if (zipIn.getNextEntry() == null) {
    return null;
final int tmpBufSize = 1024;
final byte[] tmpBuf = new byte[tmpBufSize];
byte[] output = null;
try (final ByteArrayOutputStream st = new ByteArrayOutputStream();) {
    int count = 0;
...

ZipInputStream zis = new ZipInputStream(new FileInputStream(zipSource));
try {
    byte[] readBuffer = new byte[BUFFER_SIZE];
    for (ZipEntry entry = zis.getNextEntry(); entry != null; entry = zis.getNextEntry()) {
        String relativeName = entry.getName();
        if (DEBUG)
            System.out.println("- entry : " + relativeName);
        int start = 0;
...

if (srcPath.isDirectory()) {
    if (!dstPath.exists()) {
        dstPath.mkdirs();
    String files[] = srcPath.list();
    for (int i = 0; i < files.length; i++) {
        uncompressEveryFileFromDirectory(new File(srcPath, files[i]), new File(dstPath, files[i]));
} else {
    ZipInputStream in = null;
    OutputStream out = null;
    try {
        in = new ZipInputStream(new FileInputStream(srcPath));
        in.getNextEntry();
        out = new FileOutputStream(dstPath);
        transfer(in, out);
    } finally {
        if (in != null) {
            in.close();
        if (out != null) {
            out.close();