Java Utililty Methods Unzip File

BufferedOutputStream dest = null;
BufferedInputStream is = null;
try {
    ZipEntry entry;
    ZipFile zipfile = new ZipFile(fileName);
    Enumeration<? extends ZipEntry> e = zipfile.entries();
    while (e.hasMoreElements()) {
        entry = e.nextElement();
...

decompress(filepath, outpathdir.getAbsolutePath(), includes);

int BUFFER = 2048;
ZipFile zipfile = null;
File root = null;
try {
    BufferedOutputStream dest = null;
    BufferedInputStream is = null;
    ZipEntry entry;
    zipfile = new ZipFile(zipFile);
...

if (!destinationDirectory.exists()) {
    destinationDirectory.mkdir();
if (!destinationDirectory.isDirectory()) {
    throw new IllegalArgumentException("Second param not is a Directory");
ZipFile arquivoZip = new ZipFile(file);
File[] retorno = new File[arquivoZip.size()];
...

BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(destFile));
int count;
byte data[] = new byte[BUFFER];
while ((count = zis.read(data, 0, BUFFER)) != -1) {
    bos.write(data, 0, count);
bos.close();

if (destinationFile.exists()) {
    throw new IOException("Refusing to overwrite an existing file.");
InputStream istream = null;
OutputStream ostream = null;
try {
    ostream = new BufferedOutputStream(new FileOutputStream(destinationFile), BUFF_SIZE);
    istream = getCompressedFileAsStream(toDecompress);
...

try {
    File f = new File(inName);
    String outName = inName.replace(".gz", "");
    File fout = new File(outName);
    if (fout.exists()) {
        System.out.println("Unzip File Already Exist:" + outName);
        System.out.println("Rename:" + outName + "(1)");
        fout = new File(outName + "(1)");
...

InputStream in = new GZIPInputStream(new BufferedInputStream(new FileInputStream(src)));
try {
    OutputStream out = new BufferedOutputStream(new FileOutputStream(trgt));
    try {
        copyStream(in, out);
    } finally {
        out.close();
} finally {
    in.close();

GZIPInputStream gzipInputStream = new GZIPInputStream(bais);
byte[] buffer = new byte[1024];
int length;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
while ((length = gzipInputStream.read(buffer)) != -1) {
    baos.write(buffer, 0, length);
gzipInputStream.close();
...

try (FileInputStream inputStream = new FileInputStream(zipFile)) {
    ZipInputStream zip = new ZipInputStream(inputStream);
    ZipEntry entry;
    byte[] buffer = new byte[1024];
    while ((entry = zip.getNextEntry()) != null) {
        File file = new File(folder, entry.getName());
        File entryfolder = file.getParentFile();
        if (!entryfolder.exists()) {
...