Java Utililty Methods ZipOutputStream Write

BufferedReader in = new BufferedReader(new FileReader(destPath));
zos.putNextEntry(new ZipEntry(destPath.getAbsolutePath().substring(originalPath.length())));
int c;
while ((c = in.read()) != -1)
    out.write(c);
in.close();

String fileName = requestName == null ? file.getName() : requestName;
zos.putNextEntry(new ZipEntry(fileName));
FileInputStream fis = new FileInputStream(file);
int read;
while ((read = fis.read(buf)) > 0) {
    zos.write(buf, 0, read);
fis.close();
...

FileInputStream fin;
ZipEntry ze;
byte[] buffer = new byte[10000];
int bytesread;
String entryname = file.getAbsolutePath().substring(rootLength);
entryname = entryname.replaceAll("\\\\", "/");
ze = new ZipEntry(entryname);
if (file.exists()) {
...

String filePath = path + "/" + file.getName();
if (file.isDirectory()) {
    for (File f : file.listFiles())
        zipInternal(filePath, f, os);
} else {
    ZipEntry entry = new ZipEntry(filePath);
    os.putNextEntry(entry);
    FileInputStream in = new FileInputStream(file);
...

String filePath;
if (path.isEmpty())
    filePath = file.getName();
else
    filePath = path + "/" + file.getName();
if (file.isDirectory()) {
    if (justFolders) {
        if (!filePath.equalsIgnoreCase("META-INF") || !skipManifest) {
...

for (String pathElement : directoriesAndFiles) {
    File fileElement = new File(pathElement);
    pathElement = fileElement.getPath();
    int length = pathElement.lastIndexOf(File.separator) + 1;
    if (fileElement.isFile()) {
        zipFile(pathElement, length, zos, crc);
    } else if (fileElement.isDirectory()) {
        zipDirectory(pathElement, length, zos, crc);
...

String name = base + file.getName();
ZipEntry entry = new ZipEntry(name);
entry.setTime(file.lastModified());
zout.putNextEntry(entry);
FileInputStream in = new FileInputStream(file);
try {
    long size = file.length();
    int chunkSize = 100 * 1024;
...

PrintWriter outTraceFile = new PrintWriter(
        new BufferedWriter(new FileWriter(XLIM_LOGS_WORK_DIR + FILE_SEPARATOR + "zip.log", true)), true);
if (file.isDirectory()) {
    outTraceFile.println("Zipping..." + file.getPath());
    String[] fileNamesInDir = file.list();
    if (fileNamesInDir != null) {
        for (int i = 0; i < fileNamesInDir.length; i++) {
            zipOneFile(new File(file, fileNamesInDir[i]), out, relativePath);
...

ZipEntry zipFileEntry = new ZipEntry(prefix + file.getName());
InputStream in = new BufferedInputStream(new FileInputStream(file.getAbsolutePath()));
int c;
zos.putNextEntry(zipFileEntry);
while ((c = in.read()) != -1) {
    zos.write(c);
in.close();
...

ZipEntry entry = null;
try {
    String name = file.getAbsolutePath() + (file.isDirectory() ? "/" : "");
    name = name.substring(prefixLength);
    if (name.length() > 0) {
        entry = new ZipEntry(name);
        zos.putNextEntry(entry);
        if (file.isFile()) {
...