Java Utililty Methods Unzip to Folder

ZipFile zipfile = new ZipFile(new File(archive));
Enumeration<? extends ZipEntry> en = zipfile.entries();
BufferedInputStream ins = null;
FileOutputStream outs = null;
File outFile = null;
while (en.hasMoreElements()) {
    try {
        ZipEntry entry = (ZipEntry) en.nextElement();
...

ArrayList files = new ArrayList();
ZipInputStream zis = new ZipInputStream(is);
while (true) {
    ZipEntry zipEntry = zis.getNextEntry();
    if (zipEntry == null)
        break;
    String entryName = zipEntry.getName();
    if (FILE_SEPARATOR.equalsIgnoreCase("\\")) {
...

if (compressedStr == null) {
    return null;
ByteArrayOutputStream out = null;
ByteArrayInputStream in = null;
ZipInputStream zin = null;
String decompressed = null;
try {
...

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

Enumeration entries;
ZipFile zipFile;
BufferedOutputStream out = null;
try {
    zipFile = new ZipFile(filePath);
    entries = zipFile.entries();
    while (entries.hasMoreElements()) {
        ZipEntry entry = (ZipEntry) entries.nextElement();
...

GZIPInputStream gzipInputStream = new GZIPInputStream(new FileInputStream(inFilePath));
String outFilePath = inFilePath.replace(".gz", "");
OutputStream out = new FileOutputStream(outFilePath);
byte[] buf = new byte[1024];
int len;
while ((len = gzipInputStream.read(buf)) > 0)
    out.write(buf, 0, len);
gzipInputStream.close();
...

try {
    GZIPInputStream gzipInputStream = new GZIPInputStream(new FileInputStream(inFilePath));
    OutputStream out = new FileOutputStream(outFilePath);
    byte[] buf = new byte[1024];
    int len;
    while ((len = gzipInputStream.read(buf)) > 0) {
        out.write(buf, 0, len);
    gzipInputStream.close();
    out.close();
    new File(inFilePath).delete();
    return outFilePath;
} catch (Exception e) {
    return null;

int BUFFER = 2048;
List zipFiles = new ArrayList();
File sourceZipFile = new File(inputZipPath);
File unzipDestinationDirectory = new File(destinationDirectory);
unzipDestinationDirectory.mkdir();
ZipFile zipFile;
zipFile = new ZipFile(sourceZipFile, ZipFile.OPEN_READ);
Enumeration zipFileEntries = zipFile.entries();
...

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

new File(pathDest).mkdirs();
final int BUFFER = 2048;
BufferedOutputStream dest = null;
ZipInputStream zis = new ZipInputStream(buffInputStream);
ZipEntry entry;
while ((entry = zis.getNextEntry()) != null) {
    int count;
    byte data[] = new byte[BUFFER];
...