Java Utililty Methods Unzip File

ZipFile zfile = new ZipFile(zipfile);
Enumeration<? extends ZipEntry> entries = zfile.entries();
while (entries.hasMoreElements()) {
    ZipEntry entry = entries.nextElement();
    File file = new File(directory, entry.getName());
    if (entry.isDirectory()) {
        file.mkdirs();
    } else {
...

ZipFile zfile = new ZipFile(zipfile);
Enumeration<? extends ZipEntry> entries = zfile.entries();
while (entries.hasMoreElements()) {
    ZipEntry entry = entries.nextElement();
    File file = new File(directory, entry.getName());
    if (entry.isDirectory()) {
        file.mkdirs();
    } else {
...

InputStream input = new BufferedInputStream(new FileInputStream(zipFile));
ZipInputStream zipInput = new ZipInputStream(input);
ZipEntry entry;
while ((entry = zipInput.getNextEntry()) != null) {
    File entryFile = new File(outputDir.getPath() + File.separatorChar + entry.getName());
    if (entry.isDirectory()) {
        entryFile.mkdirs();
    } else {
...

byte[] buffer = new byte[1024];
ZipInputStream zis = null;
try {
    zis = new ZipInputStream(new FileInputStream(zipFile));
    ZipEntry ze = zis.getNextEntry();
    while (ze != null) {
        String fileName = ze.getName();
        File newFile = new File(outputFolder.getAbsolutePath() + File.separator + fileName);
...

ZipFile zip = new ZipFile(zipFile);
Enumeration<?> en = zip.entries();
ZipEntry entry = null;
byte[] buffer = new byte[8192];
int length = -1;
InputStream input = null;
BufferedOutputStream bos = null;
File file = null;
...

ZipInputStream in = new ZipInputStream(new FileInputStream(zipFile));
ZipEntry entry = null;
while ((entry = in.getNextEntry()) != null) {
    String entryName = entry.getName();
    if (entry.isDirectory()) {
        File file = new File(extPlace + entryName);
        file.mkdirs();
    } else {
...

unzip(zipFileName, targetDir, new FileFilter() {
    public boolean accept(File file) {
        return true;
});

rm(destDir);
destDir.mkdir();
ZipFile zipFile = new ZipFile(zipName);
Enumeration<? extends ZipEntry> entries = zipFile.entries();
while (entries.hasMoreElements()) {
    ZipEntry entry = entries.nextElement();
    InputStream in = zipFile.getInputStream(entry);
    File targetFile = new File(destDir, entry.getName());
...

if (!destPath.exists()) {
    destPath.mkdirs();
ZipInputStream in = new ZipInputStream(new FileInputStream(zipPath));
ZipEntry entry = in.getNextEntry();
while (entry != null) {
    String filePath = destPath + File.separator + entry.getName();
    if (!entry.isDirectory()) {
...

return unzip(zippedFile, null);