Java Utililty Methods Unzip File

System.out.println(path);
File file = new File(path);
byte[] buffer = new byte[4096];
GZIPInputStream gzip;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
    gzip = new GZIPInputStream(new FileInputStream(file.toString()));
    int len;
...

byte[] buf = new byte[1024];
String entryName = zipEntry.getName();
int n;
File rootDir = new File(dest);
FileOutputStream fileoutputstream;
File newFile = new File(rootDir, entryName);
long totalLen = 0;
if (zipEntry.isDirectory()) {
...

try {
    FileInputStream fis = new FileInputStream(aFile);
    ZipInputStream zis = new ZipInputStream(fis);
    byte buffer[] = new byte[8192];
    for (ZipEntry entry = zis.getNextEntry(); entry != null; entry = zis.getNextEntry()) {
        File outputFile = new File(aFile.getParent(), entry.getName());
        if (entry.isDirectory()) {
            outputFile.mkdir();
...

unzip(archive, null);

try {
    if (!output.exists()) {
        output.mkdir();
    ZipInputStream zis = new ZipInputStream(new FileInputStream(archive));
    ZipEntry ze = zis.getNextEntry();
    while (ze != null) {
        String fileName = ze.getName();
...

try (FileInputStream fis = new FileInputStream(archiveFile);
        ZipInputStream zis = new ZipInputStream(new BufferedInputStream(fis))) {
    ZipEntry entry;
    while ((entry = zis.getNextEntry()) != null) {
        int count;
        byte data[] = new byte[BUFFER];
        File file = new File(destination, entry.getName());
        if (entry.getName().endsWith("/")) {
...

try {
    BufferedOutputStream dest = null;
    FileInputStream fis = new FileInputStream(archiveFile);
    ZipInputStream zis = new ZipInputStream(new BufferedInputStream(fis));
    ZipEntry entry;
    File base = destination;
    while ((entry = zis.getNextEntry()) != null) {
        int count;
...

forceMkdir(targetDir);
ZipFile zipFile = new ZipFile(archiveFile);
Enumeration<? extends ZipEntry> entries = zipFile.entries();
while (entries.hasMoreElements()) {
    ZipEntry entry = entries.nextElement();
    File entryTarget;
    if (skipRoot) {
        String name = entry.getName();
...

dest.mkdirs();
ZipFile zf = new ZipFile(jar);
try {
    Enumeration es = zf.entries();
    while (es.hasMoreElements()) {
        ZipEntry je = (ZipEntry) es.nextElement();
        String n = je.getName();
        File f = new File(dest, n);
...

final int BUFFER = 2048;
try {
    BufferedOutputStream dest = null;
    ZipInputStream zis = new ZipInputStream(is);
    ZipEntry entry;
    while ((entry = zis.getNextEntry()) != null) {
        File destinationFilePath = new File(destDir, entry.getName());
        destinationFilePath.getParentFile().mkdirs();
...