Unpack a segment from a zip : Zip Unzip « File « Java Tutorial

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2. File
3. Zip Unzip

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class Utils {
  /**
   * unpack a segment from a zip
   * 
   * @param addsi
   * @param packetStream
   * @param version
   */
  public static void unpack(InputStream source, File destination) throws IOException {
    ZipInputStream zin = new ZipInputStream(source);
    ZipEntry zipEntry = null;
    FileOutputStream fout = null;

    byte[] buffer = new byte[4096];
    while ((zipEntry = zin.getNextEntry()) != null) {

      long ts = zipEntry.getTime();
      // the zip entry needs to be a full path from the
      // searchIndexDirectory... hence this is correct

      File f = new File(destination, zipEntry.getName());

      f.getParentFile().mkdirs();

      fout = new FileOutputStream(f);
      int len;
      while ((len = zin.read(buffer)) > 0) {
        fout.write(buffer, 0, len);
      }
      zin.closeEntry();
      fout.close();
      f.setLastModified(ts);
    }
    fout.close();
  }
}